Journal of Clinical Outcomes Management

The American College of Cardiology has released a new expert consensus decision pathway to provide practical guidance on same-day discharge after percutaneous coronary intervention (PCI).

“There’s been a lot of interest in people wanting to start these programs, so we thought this is an ideal topic for a consensus pathway that will help programs that want to implement these things – give them kind of a road map for how to do that,” writing committee chair Sunil Rao, MD, Duke University Medical Center, Durham, N.C., said.

Although the document reviews the evidence supporting same-day discharge much like a guideline, the focus is on implementation, he said in an interview. It features a checklist of patient- and systems-specific considerations along with key definitions and a series of clinical scenarios showing the rationale for same-day discharge or overnight monitoring.

The checklist can be used for anyone presenting for an elective PCI or for ad hoc cases that flow directly from the diagnostic cath lab and make up about 80% of procedures. It is not applicable for those presenting with ST-elevation myocardial infarction (STEMI) or non-STEMI, but can be used for staged procedures performed after their index PCI, according to the report, published online Jan. 7 in the Journal of the American College of Cardiology.

When establishing a new same-day discharge program, the basic approach can be distilled down to the “three Ps”– the patient, the procedure, and the program – Dr. Rao explained. The patient has to be the right patient, be willing to go home that night, and have some kind of support structure at home in case they run into trouble. The procedure itself should be without complications and the recovery unremarkable, with a stable access site and a return to baseline mental status and ambulation. Finally, “this all has to take place in the context of a program with buy-in from the different stakeholders,” he said.

The report points out that the need for administrative buy-in “should not be underestimated” and recommends physician-champions meet with staff administrators to present the data on PCI utility and safety and to communicate the need for staff to complete the checklist.

Implementing the checklist also requires buy-in from nurses and other team members who may be tasked with educating patients on issues like access site complications and ensuring they receive relevant discharge information, a loading dose of a P2Y12 inhibitor, and appropriate prescriptions.

“If you’re only going to observe the patient for 6 hours, you’ve got to make sure that they’re on all the secondary prevention medications and the referral to cardiac rehabilitation takes place,” Dr. Rao said. “So I think that, in a funny way, the implementation of same-day discharge allows us to actually focus a little bit more on these kinds of postprocedure aspects that I think we were taking for granted a little bit when patients were being observed overnight.”

The checklist is detailed but was designed so it can be tailored to the needs of individual institutions, writing committee member Connie N. Hess, MD, MHS, University of Colorado at Denver, Aurora, pointed out.

“At every level there is a lot of variance in institutional resources or even a patient’s resources,” she said. “So we didn’t want to seem too prescriptive.”

Some institutions, for example, may feel strongly that accessibility to a caregiver means someone staying in the house who can monitor the patient’s access site and call 911 if need be, whereas others may define it as having a neighbor who’s easy to reach by phone, Dr. Hess noted in an interview.

Exactly when the last patient can be eligible for same-day discharge may also vary between urban and rural settings where patients may drive hours for their care. The built-in flexibility also allows institutions to incorporate their own preexisting documents into the checklist.

“I don’t think the hospital buy-in is necessarily the hard part because there is a clear monetary benefit as long as you can show that it’s done safely and you’re not harming patients, which I think has been done,” Dr. Hess said. “I think then the next level down, you have the provider buy-in and that may be where there might be a little bit more work depending on the preexisting culture.”

Part of the hesitancy may reflect a generational gap, whereby younger interventionalists who trained in programs with same-day discharge may be more willing to support the checklist.

“This actually parallels radial artery access where data exists on its benefits but it’s not used,” Dr. Hess said. “And I think a lot of this has to do with provider comfort levels with sending patients home and just not necessarily knowing how to implement a program at their institution.”

Both Dr. Rao and Dr. Hess pointed out that uptake of same-day discharge PCI is low in the United States, compared with other part of the world, including the United Kingdom, with estimates at about 16%-20% of PCIs.

That said, the timing of the new expert consensus document is “fortuitous,” Dr. Rao noted. Since work on the document began 2 years ago, the Centers for Medicare & Medicaid Services’ greenlit reimbursement for PCI performed in an ambulatory surgical center and the pandemic walloped U.S. hospitals. “I think those two things really do highlight the importance of a document like this.”

“A potential advantage of the same-day discharge program is that you won’t be exposing patients to the hospital setting where COVID is a problem, and you’ll keep your beds open for the COVID patients that really do need it,” he said.

The ability to go home without an overnight stay may also encourage some patients to seek care. “Patients with cardiovascular disease really need to understand that you may be stable at one point but then obviously can become unstable, and we don’t want people to stay away from the hospital because they are worried about being admitted,” Dr. Rao said.

Dr. Rao and Dr. Hess report no relevant conflicts of interest.

A version of this article first appeared on Medscape.com.

The American College of Cardiology has released a new expert consensus decision pathway to provide practical guidance on same-day discharge after percutaneous coronary intervention (PCI).

“There’s been a lot of interest in people wanting to start these programs, so we thought this is an ideal topic for a consensus pathway that will help programs that want to implement these things – give them kind of a road map for how to do that,” writing committee chair Sunil Rao, MD, Duke University Medical Center, Durham, N.C., said.

Although the document reviews the evidence supporting same-day discharge much like a guideline, the focus is on implementation, he said in an interview. It features a checklist of patient- and systems-specific considerations along with key definitions and a series of clinical scenarios showing the rationale for same-day discharge or overnight monitoring.

The checklist can be used for anyone presenting for an elective PCI or for ad hoc cases that flow directly from the diagnostic cath lab and make up about 80% of procedures. It is not applicable for those presenting with ST-elevation myocardial infarction (STEMI) or non-STEMI, but can be used for staged procedures performed after their index PCI, according to the report, published online Jan. 7 in the Journal of the American College of Cardiology.

When establishing a new same-day discharge program, the basic approach can be distilled down to the “three Ps”– the patient, the procedure, and the program – Dr. Rao explained. The patient has to be the right patient, be willing to go home that night, and have some kind of support structure at home in case they run into trouble. The procedure itself should be without complications and the recovery unremarkable, with a stable access site and a return to baseline mental status and ambulation. Finally, “this all has to take place in the context of a program with buy-in from the different stakeholders,” he said.

The report points out that the need for administrative buy-in “should not be underestimated” and recommends physician-champions meet with staff administrators to present the data on PCI utility and safety and to communicate the need for staff to complete the checklist.

Implementing the checklist also requires buy-in from nurses and other team members who may be tasked with educating patients on issues like access site complications and ensuring they receive relevant discharge information, a loading dose of a P2Y12 inhibitor, and appropriate prescriptions.

“If you’re only going to observe the patient for 6 hours, you’ve got to make sure that they’re on all the secondary prevention medications and the referral to cardiac rehabilitation takes place,” Dr. Rao said. “So I think that, in a funny way, the implementation of same-day discharge allows us to actually focus a little bit more on these kinds of postprocedure aspects that I think we were taking for granted a little bit when patients were being observed overnight.”

The checklist is detailed but was designed so it can be tailored to the needs of individual institutions, writing committee member Connie N. Hess, MD, MHS, University of Colorado at Denver, Aurora, pointed out.

“At every level there is a lot of variance in institutional resources or even a patient’s resources,” she said. “So we didn’t want to seem too prescriptive.”

Some institutions, for example, may feel strongly that accessibility to a caregiver means someone staying in the house who can monitor the patient’s access site and call 911 if need be, whereas others may define it as having a neighbor who’s easy to reach by phone, Dr. Hess noted in an interview.

Exactly when the last patient can be eligible for same-day discharge may also vary between urban and rural settings where patients may drive hours for their care. The built-in flexibility also allows institutions to incorporate their own preexisting documents into the checklist.

“I don’t think the hospital buy-in is necessarily the hard part because there is a clear monetary benefit as long as you can show that it’s done safely and you’re not harming patients, which I think has been done,” Dr. Hess said. “I think then the next level down, you have the provider buy-in and that may be where there might be a little bit more work depending on the preexisting culture.”

Part of the hesitancy may reflect a generational gap, whereby younger interventionalists who trained in programs with same-day discharge may be more willing to support the checklist.

“This actually parallels radial artery access where data exists on its benefits but it’s not used,” Dr. Hess said. “And I think a lot of this has to do with provider comfort levels with sending patients home and just not necessarily knowing how to implement a program at their institution.”

Both Dr. Rao and Dr. Hess pointed out that uptake of same-day discharge PCI is low in the United States, compared with other part of the world, including the United Kingdom, with estimates at about 16%-20% of PCIs.

That said, the timing of the new expert consensus document is “fortuitous,” Dr. Rao noted. Since work on the document began 2 years ago, the Centers for Medicare & Medicaid Services’ greenlit reimbursement for PCI performed in an ambulatory surgical center and the pandemic walloped U.S. hospitals. “I think those two things really do highlight the importance of a document like this.”

“A potential advantage of the same-day discharge program is that you won’t be exposing patients to the hospital setting where COVID is a problem, and you’ll keep your beds open for the COVID patients that really do need it,” he said.

The ability to go home without an overnight stay may also encourage some patients to seek care. “Patients with cardiovascular disease really need to understand that you may be stable at one point but then obviously can become unstable, and we don’t want people to stay away from the hospital because they are worried about being admitted,” Dr. Rao said.

Dr. Rao and Dr. Hess report no relevant conflicts of interest.

A version of this article first appeared on Medscape.com.

The American College of Cardiology has released a new expert consensus decision pathway to provide practical guidance on same-day discharge after percutaneous coronary intervention (PCI).

“There’s been a lot of interest in people wanting to start these programs, so we thought this is an ideal topic for a consensus pathway that will help programs that want to implement these things – give them kind of a road map for how to do that,” writing committee chair Sunil Rao, MD, Duke University Medical Center, Durham, N.C., said.

Although the document reviews the evidence supporting same-day discharge much like a guideline, the focus is on implementation, he said in an interview. It features a checklist of patient- and systems-specific considerations along with key definitions and a series of clinical scenarios showing the rationale for same-day discharge or overnight monitoring.

The checklist can be used for anyone presenting for an elective PCI or for ad hoc cases that flow directly from the diagnostic cath lab and make up about 80% of procedures. It is not applicable for those presenting with ST-elevation myocardial infarction (STEMI) or non-STEMI, but can be used for staged procedures performed after their index PCI, according to the report, published online Jan. 7 in the Journal of the American College of Cardiology.

When establishing a new same-day discharge program, the basic approach can be distilled down to the “three Ps”– the patient, the procedure, and the program – Dr. Rao explained. The patient has to be the right patient, be willing to go home that night, and have some kind of support structure at home in case they run into trouble. The procedure itself should be without complications and the recovery unremarkable, with a stable access site and a return to baseline mental status and ambulation. Finally, “this all has to take place in the context of a program with buy-in from the different stakeholders,” he said.

The report points out that the need for administrative buy-in “should not be underestimated” and recommends physician-champions meet with staff administrators to present the data on PCI utility and safety and to communicate the need for staff to complete the checklist.

Implementing the checklist also requires buy-in from nurses and other team members who may be tasked with educating patients on issues like access site complications and ensuring they receive relevant discharge information, a loading dose of a P2Y12 inhibitor, and appropriate prescriptions.

“If you’re only going to observe the patient for 6 hours, you’ve got to make sure that they’re on all the secondary prevention medications and the referral to cardiac rehabilitation takes place,” Dr. Rao said. “So I think that, in a funny way, the implementation of same-day discharge allows us to actually focus a little bit more on these kinds of postprocedure aspects that I think we were taking for granted a little bit when patients were being observed overnight.”

The checklist is detailed but was designed so it can be tailored to the needs of individual institutions, writing committee member Connie N. Hess, MD, MHS, University of Colorado at Denver, Aurora, pointed out.

“At every level there is a lot of variance in institutional resources or even a patient’s resources,” she said. “So we didn’t want to seem too prescriptive.”

Some institutions, for example, may feel strongly that accessibility to a caregiver means someone staying in the house who can monitor the patient’s access site and call 911 if need be, whereas others may define it as having a neighbor who’s easy to reach by phone, Dr. Hess noted in an interview.

Exactly when the last patient can be eligible for same-day discharge may also vary between urban and rural settings where patients may drive hours for their care. The built-in flexibility also allows institutions to incorporate their own preexisting documents into the checklist.

“I don’t think the hospital buy-in is necessarily the hard part because there is a clear monetary benefit as long as you can show that it’s done safely and you’re not harming patients, which I think has been done,” Dr. Hess said. “I think then the next level down, you have the provider buy-in and that may be where there might be a little bit more work depending on the preexisting culture.”

Part of the hesitancy may reflect a generational gap, whereby younger interventionalists who trained in programs with same-day discharge may be more willing to support the checklist.

“This actually parallels radial artery access where data exists on its benefits but it’s not used,” Dr. Hess said. “And I think a lot of this has to do with provider comfort levels with sending patients home and just not necessarily knowing how to implement a program at their institution.”

Both Dr. Rao and Dr. Hess pointed out that uptake of same-day discharge PCI is low in the United States, compared with other part of the world, including the United Kingdom, with estimates at about 16%-20% of PCIs.

That said, the timing of the new expert consensus document is “fortuitous,” Dr. Rao noted. Since work on the document began 2 years ago, the Centers for Medicare & Medicaid Services’ greenlit reimbursement for PCI performed in an ambulatory surgical center and the pandemic walloped U.S. hospitals. “I think those two things really do highlight the importance of a document like this.”

“A potential advantage of the same-day discharge program is that you won’t be exposing patients to the hospital setting where COVID is a problem, and you’ll keep your beds open for the COVID patients that really do need it,” he said.

The ability to go home without an overnight stay may also encourage some patients to seek care. “Patients with cardiovascular disease really need to understand that you may be stable at one point but then obviously can become unstable, and we don’t want people to stay away from the hospital because they are worried about being admitted,” Dr. Rao said.

Dr. Rao and Dr. Hess report no relevant conflicts of interest.

A version of this article first appeared on Medscape.com.

Heavy alcohol use in adolescence is linked to disruptions in white-matter integrity, new research suggests.

Highwaystarz-Photography/Thinkstock

In a case-control study of more than 400 participants, the association was more pronounced in younger adolescents and in the anterior and middle corpus callosum, which serve the interhemispheric integration of frontal networking and communication.

The results provide clinicians with yet another reason to ask adolescents about their alcohol use, said investigator Adolf Pfefferbaum, MD, Center for Health Sciences, SRI International, Menlo Park, Calif., and professor emeritus at Stanford (Calif.) University.

However, when questioning adolescents about their alcohol use, “sometimes it’s better to ask: ‘How much alcohol do you drink?’ ” instead of just asking if they drink, Dr. Pfefferbaum said in an interview. That’s because they may be more willing to answer the first question honestly.

It’s also important for clinicians to nonjudgmentally tell teens there is evidence “that heavy drinking is bad for their brain,” he added.

The findings were published online Dec. 30, 2020, in JAMA Psychiatry.
 

Fractional anisotropy

Adolescence is a critical period of physiological and social maturation accompanied by significant structural, functional, and neurochemical brain changes, the investigators noted.

Diffusion tensor imaging (DTI) produces a measure called fractional anisotropy (FA), which characterizes some of these brain changes by measuring molecular water diffusion in the brain.

“FA is a measure of the integrity of brain white matter; so, the part of the brain that connects neurons with each other,” Dr. Pfefferbaum said. He added that FA decreases in diseases such as multiple sclerosis (MS), reflecting “some kind of pathology.”

Affected fiber systems include the corpus callosum, superior longitudinal fasciculus, internal and external capsule, brain stem, and cortical projection fibers. Disruption of these neural systems may degrade neural signal transmission and affect certain cognitive functions, possibly resulting in enhanced impulsivity, poor inhibitory control, and restricted working memory capacity, the researchers wrote.

FA follows an inverted U-shaped pattern. “The natural trajectory is to increase from infancy up to middle adolescence and then, as we get older, from about age 25 to 30 years, starts to go down. Our brains are starting to show signs of aging a bit by then,” said Dr. Pfefferbaum.

The current analysis assessed 451 adolescents (228 boys and 223 girls) from the NCANDA study, for whom researchers had four years of longitudinal DTI data. All were aged 12- 21 years at baseline.

The NCANDA cohort was recruited across five U.S. sites. Participants are assessed yearly on psychobiologic measures, including brain maturation. The cohort, which did not have any significant substance abuse upon entry, is balanced in terms of gender and ethnicity.

The investigators quantified the developmental change of white-matter (WM) integrity within each individual as the slope of FA over visits. They also examined altered developmental trajectories associated with drinking onset during adolescence and the differential alcohol associations by age with specific regional WM fiber tracts.

Researchers assessed drinking on a scale of 1-4, based on the youth-adjusted Cahalan score. The scale considers quantity and frequency to classify drinking levels based on past-year self-reported patterns.
 

Altered trajectory

Results showed that 291 participants (37.2%) remained at no to low drinking levels (youth-adjusted Cahalan score, 0) throughout the time points examined, and 160 (20.5%) were classified as heavy drinkers for at least two consecutive visits (youth-adjusted Cahalan score >1).

Among the no to low drinkers, 48.4% were boys with a mean age of 16.5 years and 51.2% were girls with a mean age of 16.5 years. About two thirds of the group (66%) were White.

Among heavy drinkers, 53.8% were boys with a mean age of 20.1 years and 46.3% were girls with a mean age of 20.5 years. In this group, 88.8% were White.

The investigators did not analyze moderate drinkers or those who initiated heavy drinking for only one visit.

The findings also showed that heavy drinkers exhibited significant reduction of whole-brain FA. The slopes of the 78 heavy drinkers were significantly more negative than the 78 matched no to low drinkers (mean, –0.0013 vs. 0.0001; P = .008).

“The concept of the slopes is really important here because it’s the trajectory that seems to be the most sensitive measure,” Dr. Pfefferbaum said. “Probably what’s happening is the exposure to alcohol is interfering with the normal myelination and normal development of the adolescent’s white matter.”

The no to low drinkers had relatively stable FA measures across all visits.

A reduction in FA was significantly linked to heavy drinking. An analysis of 63 youth who transitioned from being a no to low drinker to a heavy drinker showed that before the transition, they had significantly increased FA over visits (95% CI of slope, 0.0011-0.0024; P < .001). In addition, their corresponding slopes were not different from other no to low drinkers of the same age range.

However, this group’s FA declined significantly after they reported heavy drinking, resulting in slopes significantly below zero (95% CI of slope, –0.0036 to –0.0014; P < .001) and that were lower than the no to low participants of the same age range.

The findings of this unique before-and-after assessment “bring us one step closer to causality,” and further illustrates that heavy drinking in adolescence affects WM integrity, Dr. Pfefferbaum said.
 

Potential markers

None of the slope measures correlated with number of visits or use of tobacco or cannabis. The association of alcohol with the slope measures was more apparent in the younger cohort (<19 years).

“The effects were seen more readily in younger adolescents because they are the ones who are still progressing along this normal developmental trajectory,” Dr. Pfefferbaum noted. “In a sense, the younger you are when you’re exposed to alcohol, probably the more vulnerable you are.”

Previous studies have suggested that damage in WM tracts is associated with heightened neural reactivity to alcohol cues in adults with alcohol use disorder. Given this evidence, the greater WM degradation at younger versus older ages might help explain why adolescents who initiate early drinking are more likely to develop addiction later in life, the investigators wrote.

Of the five major fiber tracts, only the commissural fibers (corpus callosum) showed a significant association with alcohol. The researchers noted that WM volume shrinkage and callosal demyelination are two of the most prominent markers in adult alcoholism and are potential markers in adolescent alcohol abuse.

Upon further extending the analysis to the four subregions of the corpus callosum, the investigators found that only the anterior and middle callosal regions (genu and body) showed significant age-alcohol interactions.

This could be a result of the timing of fiber myelination in these regions of the brain, compared with others, Dr. Pfefferbaum said.

He noted that these fibers connect the left and right part of the anterior regions of the brain, especially the frontal lobes, which are particularly vulnerable to the effects of alcohol. “It may well be that we have this interaction of the developmental time and the sensitivity of the frontal parts of the brain.”
 

Cognitive effects?

Although the researchers did not find any sex effects, Dr. Pfefferbaum stressed that this doesn’t mean they do not exist. “We just may not have the power to see them,” he said.

The study did not look specifically at binge drinkers, defined as consuming five drinks in 2 hours for men and four drinks in 2 hours for women. Dr. Pfefferbaum noted that it is difficult to get “good quantification” of binge drinking. “We don’t have a fine enough grain analysis to separate that out,” he said.

Asked whether the altered FA trajectory in heavy drinkers affects cognition, Dr. Pfefferbaum said “those studies are still in progress,” with results hopefully available within about a year.

Dr. Pfefferbaum said he and his colleagues are continuing to follow these adolescents and hope to see if the altered FA trajectory in heavy drinkers returns to normal, adding: “The real question now is: If they stop heavy drinking, will they get back on track?”

This study is believed to be the first to suggest in vivo differential vulnerability in WM microstructure with respect to age, the authors note.

In addition to asking teens about their alcohol use, the clinician’s role should be to “counsel and refer,” said Dr. Pfefferbaum. He also suggested accessing resources from the National Institute on Alcohol Abuse and Alcoholism.
 

Important data, but several limitations

In an interview, Oscar G. Bukstein, MD, MPH, medical director of outpatient psychiatry service at Boston Children’s Hospital, and professor of psychiatry at Harvard Medical School, also in Boston, said the findings provide further evidence that alcohol affects the maturing brain.

This study, and others that have examined cannabis use, “show that you have a dynamically growing brain with certain sections, particularly in this case the anterior and middle corpus callosum, that mature later [and] that are more likely to be affected by early alcohol use,” said Dr. Bukstein, who was not involved with the research.

He stressed the importance of determining the mechanism involved and noted some study limitations. For example, the DTI technology used may “already be out of date,” he said.

Using older technology may have prevented finding an impact of heavy drinking on parts of the brain other than the anterior and middle corpus callosum, Dr. Bukstein noted.

Newer technology might provide “a finer-grain nonlinear voxel-wise analysis,” although using more updated scanning techniques may not have detected additional differences in study groups, he added.

Dr. Bukstein also noted that there were limitations: The study did not have “gradations,” but only looked at heavy drinking and no to low drinking. “You’d like to find out about kids who are somewhere in the middle.” It also didn’t determine a “cutoff” where deleterious effects of alcohol on the brain begin, Dr. Bukstein added.

Additionally, the study didn’t look at brain development outcomes in children with conditions such as depression and ADHD that are known to lead to substance use – something a larger study may have been able to do, he said.

Dr. Bukstein noted that a newer and much larger study, the Adolescent Brain Cognitive Development study, has begun assessing kids for risk factors such as substance use, starting at age 10 years.

The study was funded by grants from NIAAA and by the National Institute on Drug Abuse, the National Institute of Mental Health, the National Institute of Child Health and Human Development, and the Stanford Institute for Human-Centered Artificial Intelligence–AWS Cloud Credits for Research. Dr. Pfefferbaum reported receiving an NIAAA grant during the conduct of the study. Dr. Bukstein disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Heavy alcohol use in adolescence is linked to disruptions in white-matter integrity, new research suggests.

Highwaystarz-Photography/Thinkstock

In a case-control study of more than 400 participants, the association was more pronounced in younger adolescents and in the anterior and middle corpus callosum, which serve the interhemispheric integration of frontal networking and communication.

The results provide clinicians with yet another reason to ask adolescents about their alcohol use, said investigator Adolf Pfefferbaum, MD, Center for Health Sciences, SRI International, Menlo Park, Calif., and professor emeritus at Stanford (Calif.) University.

However, when questioning adolescents about their alcohol use, “sometimes it’s better to ask: ‘How much alcohol do you drink?’ ” instead of just asking if they drink, Dr. Pfefferbaum said in an interview. That’s because they may be more willing to answer the first question honestly.

It’s also important for clinicians to nonjudgmentally tell teens there is evidence “that heavy drinking is bad for their brain,” he added.

The findings were published online Dec. 30, 2020, in JAMA Psychiatry.
 

Fractional anisotropy

Adolescence is a critical period of physiological and social maturation accompanied by significant structural, functional, and neurochemical brain changes, the investigators noted.

Diffusion tensor imaging (DTI) produces a measure called fractional anisotropy (FA), which characterizes some of these brain changes by measuring molecular water diffusion in the brain.

“FA is a measure of the integrity of brain white matter; so, the part of the brain that connects neurons with each other,” Dr. Pfefferbaum said. He added that FA decreases in diseases such as multiple sclerosis (MS), reflecting “some kind of pathology.”

Affected fiber systems include the corpus callosum, superior longitudinal fasciculus, internal and external capsule, brain stem, and cortical projection fibers. Disruption of these neural systems may degrade neural signal transmission and affect certain cognitive functions, possibly resulting in enhanced impulsivity, poor inhibitory control, and restricted working memory capacity, the researchers wrote.

FA follows an inverted U-shaped pattern. “The natural trajectory is to increase from infancy up to middle adolescence and then, as we get older, from about age 25 to 30 years, starts to go down. Our brains are starting to show signs of aging a bit by then,” said Dr. Pfefferbaum.

The current analysis assessed 451 adolescents (228 boys and 223 girls) from the NCANDA study, for whom researchers had four years of longitudinal DTI data. All were aged 12- 21 years at baseline.

The NCANDA cohort was recruited across five U.S. sites. Participants are assessed yearly on psychobiologic measures, including brain maturation. The cohort, which did not have any significant substance abuse upon entry, is balanced in terms of gender and ethnicity.

The investigators quantified the developmental change of white-matter (WM) integrity within each individual as the slope of FA over visits. They also examined altered developmental trajectories associated with drinking onset during adolescence and the differential alcohol associations by age with specific regional WM fiber tracts.

Researchers assessed drinking on a scale of 1-4, based on the youth-adjusted Cahalan score. The scale considers quantity and frequency to classify drinking levels based on past-year self-reported patterns.
 

Altered trajectory

Results showed that 291 participants (37.2%) remained at no to low drinking levels (youth-adjusted Cahalan score, 0) throughout the time points examined, and 160 (20.5%) were classified as heavy drinkers for at least two consecutive visits (youth-adjusted Cahalan score >1).

Among the no to low drinkers, 48.4% were boys with a mean age of 16.5 years and 51.2% were girls with a mean age of 16.5 years. About two thirds of the group (66%) were White.

Among heavy drinkers, 53.8% were boys with a mean age of 20.1 years and 46.3% were girls with a mean age of 20.5 years. In this group, 88.8% were White.

The investigators did not analyze moderate drinkers or those who initiated heavy drinking for only one visit.

The findings also showed that heavy drinkers exhibited significant reduction of whole-brain FA. The slopes of the 78 heavy drinkers were significantly more negative than the 78 matched no to low drinkers (mean, –0.0013 vs. 0.0001; P = .008).

“The concept of the slopes is really important here because it’s the trajectory that seems to be the most sensitive measure,” Dr. Pfefferbaum said. “Probably what’s happening is the exposure to alcohol is interfering with the normal myelination and normal development of the adolescent’s white matter.”

The no to low drinkers had relatively stable FA measures across all visits.

A reduction in FA was significantly linked to heavy drinking. An analysis of 63 youth who transitioned from being a no to low drinker to a heavy drinker showed that before the transition, they had significantly increased FA over visits (95% CI of slope, 0.0011-0.0024; P < .001). In addition, their corresponding slopes were not different from other no to low drinkers of the same age range.

However, this group’s FA declined significantly after they reported heavy drinking, resulting in slopes significantly below zero (95% CI of slope, –0.0036 to –0.0014; P < .001) and that were lower than the no to low participants of the same age range.

The findings of this unique before-and-after assessment “bring us one step closer to causality,” and further illustrates that heavy drinking in adolescence affects WM integrity, Dr. Pfefferbaum said.
 

Potential markers

None of the slope measures correlated with number of visits or use of tobacco or cannabis. The association of alcohol with the slope measures was more apparent in the younger cohort (<19 years).

“The effects were seen more readily in younger adolescents because they are the ones who are still progressing along this normal developmental trajectory,” Dr. Pfefferbaum noted. “In a sense, the younger you are when you’re exposed to alcohol, probably the more vulnerable you are.”

Previous studies have suggested that damage in WM tracts is associated with heightened neural reactivity to alcohol cues in adults with alcohol use disorder. Given this evidence, the greater WM degradation at younger versus older ages might help explain why adolescents who initiate early drinking are more likely to develop addiction later in life, the investigators wrote.

Of the five major fiber tracts, only the commissural fibers (corpus callosum) showed a significant association with alcohol. The researchers noted that WM volume shrinkage and callosal demyelination are two of the most prominent markers in adult alcoholism and are potential markers in adolescent alcohol abuse.

Upon further extending the analysis to the four subregions of the corpus callosum, the investigators found that only the anterior and middle callosal regions (genu and body) showed significant age-alcohol interactions.

This could be a result of the timing of fiber myelination in these regions of the brain, compared with others, Dr. Pfefferbaum said.

He noted that these fibers connect the left and right part of the anterior regions of the brain, especially the frontal lobes, which are particularly vulnerable to the effects of alcohol. “It may well be that we have this interaction of the developmental time and the sensitivity of the frontal parts of the brain.”
 

Cognitive effects?

Although the researchers did not find any sex effects, Dr. Pfefferbaum stressed that this doesn’t mean they do not exist. “We just may not have the power to see them,” he said.

The study did not look specifically at binge drinkers, defined as consuming five drinks in 2 hours for men and four drinks in 2 hours for women. Dr. Pfefferbaum noted that it is difficult to get “good quantification” of binge drinking. “We don’t have a fine enough grain analysis to separate that out,” he said.

Asked whether the altered FA trajectory in heavy drinkers affects cognition, Dr. Pfefferbaum said “those studies are still in progress,” with results hopefully available within about a year.

Dr. Pfefferbaum said he and his colleagues are continuing to follow these adolescents and hope to see if the altered FA trajectory in heavy drinkers returns to normal, adding: “The real question now is: If they stop heavy drinking, will they get back on track?”

This study is believed to be the first to suggest in vivo differential vulnerability in WM microstructure with respect to age, the authors note.

In addition to asking teens about their alcohol use, the clinician’s role should be to “counsel and refer,” said Dr. Pfefferbaum. He also suggested accessing resources from the National Institute on Alcohol Abuse and Alcoholism.
 

Important data, but several limitations

In an interview, Oscar G. Bukstein, MD, MPH, medical director of outpatient psychiatry service at Boston Children’s Hospital, and professor of psychiatry at Harvard Medical School, also in Boston, said the findings provide further evidence that alcohol affects the maturing brain.

This study, and others that have examined cannabis use, “show that you have a dynamically growing brain with certain sections, particularly in this case the anterior and middle corpus callosum, that mature later [and] that are more likely to be affected by early alcohol use,” said Dr. Bukstein, who was not involved with the research.

He stressed the importance of determining the mechanism involved and noted some study limitations. For example, the DTI technology used may “already be out of date,” he said.

Using older technology may have prevented finding an impact of heavy drinking on parts of the brain other than the anterior and middle corpus callosum, Dr. Bukstein noted.

Newer technology might provide “a finer-grain nonlinear voxel-wise analysis,” although using more updated scanning techniques may not have detected additional differences in study groups, he added.

Dr. Bukstein also noted that there were limitations: The study did not have “gradations,” but only looked at heavy drinking and no to low drinking. “You’d like to find out about kids who are somewhere in the middle.” It also didn’t determine a “cutoff” where deleterious effects of alcohol on the brain begin, Dr. Bukstein added.

Additionally, the study didn’t look at brain development outcomes in children with conditions such as depression and ADHD that are known to lead to substance use – something a larger study may have been able to do, he said.

Dr. Bukstein noted that a newer and much larger study, the Adolescent Brain Cognitive Development study, has begun assessing kids for risk factors such as substance use, starting at age 10 years.

The study was funded by grants from NIAAA and by the National Institute on Drug Abuse, the National Institute of Mental Health, the National Institute of Child Health and Human Development, and the Stanford Institute for Human-Centered Artificial Intelligence–AWS Cloud Credits for Research. Dr. Pfefferbaum reported receiving an NIAAA grant during the conduct of the study. Dr. Bukstein disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Heavy alcohol use in adolescence is linked to disruptions in white-matter integrity, new research suggests.

Highwaystarz-Photography/Thinkstock

In a case-control study of more than 400 participants, the association was more pronounced in younger adolescents and in the anterior and middle corpus callosum, which serve the interhemispheric integration of frontal networking and communication.

The results provide clinicians with yet another reason to ask adolescents about their alcohol use, said investigator Adolf Pfefferbaum, MD, Center for Health Sciences, SRI International, Menlo Park, Calif., and professor emeritus at Stanford (Calif.) University.

However, when questioning adolescents about their alcohol use, “sometimes it’s better to ask: ‘How much alcohol do you drink?’ ” instead of just asking if they drink, Dr. Pfefferbaum said in an interview. That’s because they may be more willing to answer the first question honestly.

It’s also important for clinicians to nonjudgmentally tell teens there is evidence “that heavy drinking is bad for their brain,” he added.

The findings were published online Dec. 30, 2020, in JAMA Psychiatry.
 

Fractional anisotropy

Adolescence is a critical period of physiological and social maturation accompanied by significant structural, functional, and neurochemical brain changes, the investigators noted.

Diffusion tensor imaging (DTI) produces a measure called fractional anisotropy (FA), which characterizes some of these brain changes by measuring molecular water diffusion in the brain.

“FA is a measure of the integrity of brain white matter; so, the part of the brain that connects neurons with each other,” Dr. Pfefferbaum said. He added that FA decreases in diseases such as multiple sclerosis (MS), reflecting “some kind of pathology.”

Affected fiber systems include the corpus callosum, superior longitudinal fasciculus, internal and external capsule, brain stem, and cortical projection fibers. Disruption of these neural systems may degrade neural signal transmission and affect certain cognitive functions, possibly resulting in enhanced impulsivity, poor inhibitory control, and restricted working memory capacity, the researchers wrote.

FA follows an inverted U-shaped pattern. “The natural trajectory is to increase from infancy up to middle adolescence and then, as we get older, from about age 25 to 30 years, starts to go down. Our brains are starting to show signs of aging a bit by then,” said Dr. Pfefferbaum.

The current analysis assessed 451 adolescents (228 boys and 223 girls) from the NCANDA study, for whom researchers had four years of longitudinal DTI data. All were aged 12- 21 years at baseline.

The NCANDA cohort was recruited across five U.S. sites. Participants are assessed yearly on psychobiologic measures, including brain maturation. The cohort, which did not have any significant substance abuse upon entry, is balanced in terms of gender and ethnicity.

The investigators quantified the developmental change of white-matter (WM) integrity within each individual as the slope of FA over visits. They also examined altered developmental trajectories associated with drinking onset during adolescence and the differential alcohol associations by age with specific regional WM fiber tracts.

Researchers assessed drinking on a scale of 1-4, based on the youth-adjusted Cahalan score. The scale considers quantity and frequency to classify drinking levels based on past-year self-reported patterns.
 

Altered trajectory

Results showed that 291 participants (37.2%) remained at no to low drinking levels (youth-adjusted Cahalan score, 0) throughout the time points examined, and 160 (20.5%) were classified as heavy drinkers for at least two consecutive visits (youth-adjusted Cahalan score >1).

Among the no to low drinkers, 48.4% were boys with a mean age of 16.5 years and 51.2% were girls with a mean age of 16.5 years. About two thirds of the group (66%) were White.

Among heavy drinkers, 53.8% were boys with a mean age of 20.1 years and 46.3% were girls with a mean age of 20.5 years. In this group, 88.8% were White.

The investigators did not analyze moderate drinkers or those who initiated heavy drinking for only one visit.

The findings also showed that heavy drinkers exhibited significant reduction of whole-brain FA. The slopes of the 78 heavy drinkers were significantly more negative than the 78 matched no to low drinkers (mean, –0.0013 vs. 0.0001; P = .008).

“The concept of the slopes is really important here because it’s the trajectory that seems to be the most sensitive measure,” Dr. Pfefferbaum said. “Probably what’s happening is the exposure to alcohol is interfering with the normal myelination and normal development of the adolescent’s white matter.”

The no to low drinkers had relatively stable FA measures across all visits.

A reduction in FA was significantly linked to heavy drinking. An analysis of 63 youth who transitioned from being a no to low drinker to a heavy drinker showed that before the transition, they had significantly increased FA over visits (95% CI of slope, 0.0011-0.0024; P < .001). In addition, their corresponding slopes were not different from other no to low drinkers of the same age range.

However, this group’s FA declined significantly after they reported heavy drinking, resulting in slopes significantly below zero (95% CI of slope, –0.0036 to –0.0014; P < .001) and that were lower than the no to low participants of the same age range.

The findings of this unique before-and-after assessment “bring us one step closer to causality,” and further illustrates that heavy drinking in adolescence affects WM integrity, Dr. Pfefferbaum said.
 

Potential markers

None of the slope measures correlated with number of visits or use of tobacco or cannabis. The association of alcohol with the slope measures was more apparent in the younger cohort (<19 years).

“The effects were seen more readily in younger adolescents because they are the ones who are still progressing along this normal developmental trajectory,” Dr. Pfefferbaum noted. “In a sense, the younger you are when you’re exposed to alcohol, probably the more vulnerable you are.”

Previous studies have suggested that damage in WM tracts is associated with heightened neural reactivity to alcohol cues in adults with alcohol use disorder. Given this evidence, the greater WM degradation at younger versus older ages might help explain why adolescents who initiate early drinking are more likely to develop addiction later in life, the investigators wrote.

Of the five major fiber tracts, only the commissural fibers (corpus callosum) showed a significant association with alcohol. The researchers noted that WM volume shrinkage and callosal demyelination are two of the most prominent markers in adult alcoholism and are potential markers in adolescent alcohol abuse.

Upon further extending the analysis to the four subregions of the corpus callosum, the investigators found that only the anterior and middle callosal regions (genu and body) showed significant age-alcohol interactions.

This could be a result of the timing of fiber myelination in these regions of the brain, compared with others, Dr. Pfefferbaum said.

He noted that these fibers connect the left and right part of the anterior regions of the brain, especially the frontal lobes, which are particularly vulnerable to the effects of alcohol. “It may well be that we have this interaction of the developmental time and the sensitivity of the frontal parts of the brain.”
 

Cognitive effects?

Although the researchers did not find any sex effects, Dr. Pfefferbaum stressed that this doesn’t mean they do not exist. “We just may not have the power to see them,” he said.

The study did not look specifically at binge drinkers, defined as consuming five drinks in 2 hours for men and four drinks in 2 hours for women. Dr. Pfefferbaum noted that it is difficult to get “good quantification” of binge drinking. “We don’t have a fine enough grain analysis to separate that out,” he said.

Asked whether the altered FA trajectory in heavy drinkers affects cognition, Dr. Pfefferbaum said “those studies are still in progress,” with results hopefully available within about a year.

Dr. Pfefferbaum said he and his colleagues are continuing to follow these adolescents and hope to see if the altered FA trajectory in heavy drinkers returns to normal, adding: “The real question now is: If they stop heavy drinking, will they get back on track?”

This study is believed to be the first to suggest in vivo differential vulnerability in WM microstructure with respect to age, the authors note.

In addition to asking teens about their alcohol use, the clinician’s role should be to “counsel and refer,” said Dr. Pfefferbaum. He also suggested accessing resources from the National Institute on Alcohol Abuse and Alcoholism.
 

Important data, but several limitations

In an interview, Oscar G. Bukstein, MD, MPH, medical director of outpatient psychiatry service at Boston Children’s Hospital, and professor of psychiatry at Harvard Medical School, also in Boston, said the findings provide further evidence that alcohol affects the maturing brain.

This study, and others that have examined cannabis use, “show that you have a dynamically growing brain with certain sections, particularly in this case the anterior and middle corpus callosum, that mature later [and] that are more likely to be affected by early alcohol use,” said Dr. Bukstein, who was not involved with the research.

He stressed the importance of determining the mechanism involved and noted some study limitations. For example, the DTI technology used may “already be out of date,” he said.

Using older technology may have prevented finding an impact of heavy drinking on parts of the brain other than the anterior and middle corpus callosum, Dr. Bukstein noted.

Newer technology might provide “a finer-grain nonlinear voxel-wise analysis,” although using more updated scanning techniques may not have detected additional differences in study groups, he added.

Dr. Bukstein also noted that there were limitations: The study did not have “gradations,” but only looked at heavy drinking and no to low drinking. “You’d like to find out about kids who are somewhere in the middle.” It also didn’t determine a “cutoff” where deleterious effects of alcohol on the brain begin, Dr. Bukstein added.

Additionally, the study didn’t look at brain development outcomes in children with conditions such as depression and ADHD that are known to lead to substance use – something a larger study may have been able to do, he said.

Dr. Bukstein noted that a newer and much larger study, the Adolescent Brain Cognitive Development study, has begun assessing kids for risk factors such as substance use, starting at age 10 years.

The study was funded by grants from NIAAA and by the National Institute on Drug Abuse, the National Institute of Mental Health, the National Institute of Child Health and Human Development, and the Stanford Institute for Human-Centered Artificial Intelligence–AWS Cloud Credits for Research. Dr. Pfefferbaum reported receiving an NIAAA grant during the conduct of the study. Dr. Bukstein disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

As COVID-19 cases surge and vaccinations lag, health authorities continue to seek additional ways to mitigate the spread of the novel coronavirus.

Now, a modeling study estimates that more than half of transmissions come from pre-, never-, and asymptomatic individuals, indicating that symptom-based screening will have little effect on spread.

Courtesy NIAID

The analysis

Based on data from several COVID-19 studies from last year, the CDC’s analytical model assumes at baseline that infectiousness peaks at the median point of symptom onset, and that 30% of infected individuals never develop symptoms but are nevertheless 75% as infectious as those who develop overt symptoms.

The investigators then model multiple scenarios of transmission based pre- and never-symptomatic individuals, assuming different incubation and infectious periods, and varying numbers of days from point of infection to symptom onset.

When combined, the models predicts that 59% of all transmission would come from asymptomatic transmission – 35% from presymptomatic individuals and 24% from never-symptomatic individuals.

The findings complement those of an earlier CDC analysis, according to the authors.

The overall proportion of transmission from presymptomatic and never-symptomatic individuals is key to identifying mitigation measures that may be able to control SARS-CoV-2, the authors stated.

For example, they explain, if the infection reproduction number (R) in a particular setting is 2.0, a reduction in transmission of at least 50% is needed in order to reduce R to below 1.0. “Given that in some settings R is likely much greater than 2 and more than half of transmissions may come from individuals who are asymptomatic at the time of transmission, effective control must mitigate transmission risk from people without symptoms,” they wrote.

The authors acknowledge that the study applies a simplistic model to a complex and evolving phenomenon, and that the exact proportions of presymptomatic and never-symptomatic transmission and the incubation periods are not known. They also note symptoms and transmissions appear to vary across different population groups, with older individuals more likely than younger persons to experience symptoms, according to previous studies.

“Assume that everyone is potentially infected”

Other experts agree that expanded testing of asymptomatic individuals is important. “Screening for fever and isolation of symptomatic individuals is a common-sense approach to help prevent spread, but these measures are by no means adequate since it’s been clearly documented that individuals who are either asymptomatic or presymptomatic can still spread the virus,” said Brett Williams, MD, an infectious disease specialist and assistant professor of medicine at Rush University in Chicago. 

“As we saw with the White House Rose Garden superspreader outbreak, testing does not reliably exclude infection either because the tested individual has not yet become positive or the test is falsely negative,” Dr. Williams, who was not involved in the CDC study, said in an interview. He further noted that when prevalence is as high as it currently is in the United States, the rate of false negatives will be high because a large proportion of those screened will be unknowingly infected.

At his center, all visitors and staff are screened with a temperature probe on entry, and since the earliest days of the pandemic, universal masking has been required. “Nationally there have been many instances of hospital break room outbreaks because of staff eating lunch together, and these outbreaks also demonstrate the incompleteness of symptomatic isolation,” Dr. Williams said.

For his part, virologist Frank Esper, MD, a pediatric infectious disease specialist at the Cleveland Clinic, said that while it’s been understood for some time that many infected people will not exhibit symptoms, “the question that remains is just how infectious are they?”

Dr. Esper’s takeaway from the modeling study is not so much that we need more screening of possibly exposed but asymptomatic people, but rather testing symptomatic people and tracing their contacts is not enough.

“We need to continue to assume that everyone is potentially infected whether they know it or not. And even though we have ramped up our testing to a much greater capacity than in the first wave, we need to continue to wear masks and socially distance because just identifying people who are sick and isolating or quarantining them is not going to be enough to contain the pandemic.”

And although assumption-based modeling is helpful, it cannot tell us “how many asymptomatic people are actually infected,” said Dr. Esper, who was not involved in the CDC study.

Dr. Esper also pointed out that the study estimates are based on data from early Chinese studies, but the virus has since changed. The new, more transmissible strain in the United States and elsewhere may involve not only more infections but also a longer presymptomatic stage. “So the CDC study may actually undershoot asymptomatic infections,” he said. 

He also agreed with the authors that when it comes to infection, not all humans are equal. “Older people tend to be more symptomatic and become symptomatic more quickly so the asymptomatic rate is not the same across board from young people age 20 to older people.”

The bottom line, said David. A. Hirschwerk, MD, an infectious disease specialist at Northwell Health in Manhasset, N.Y., is that these data support the maintenance of protective measures we’ve been taking over the past months. “They support the concept that asymptomatic people are a significant source of transmission and that we need to adhere to mask wearing and social distancing, particularly indoors,” Dr. Hirschwerk, who was not involved in the analysis, said in an interview. “More testing would be better but it has to be fast and it has to be efficient, and there are a lot of challenges to overcome.”

The study was done as part of the CDC’s coronavirus disease 2019 response and was supported solely by federal base and response funding. The authors and commentators have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

As COVID-19 cases surge and vaccinations lag, health authorities continue to seek additional ways to mitigate the spread of the novel coronavirus.

Now, a modeling study estimates that more than half of transmissions come from pre-, never-, and asymptomatic individuals, indicating that symptom-based screening will have little effect on spread.

Courtesy NIAID

The analysis

Based on data from several COVID-19 studies from last year, the CDC’s analytical model assumes at baseline that infectiousness peaks at the median point of symptom onset, and that 30% of infected individuals never develop symptoms but are nevertheless 75% as infectious as those who develop overt symptoms.

The investigators then model multiple scenarios of transmission based pre- and never-symptomatic individuals, assuming different incubation and infectious periods, and varying numbers of days from point of infection to symptom onset.

When combined, the models predicts that 59% of all transmission would come from asymptomatic transmission – 35% from presymptomatic individuals and 24% from never-symptomatic individuals.

The findings complement those of an earlier CDC analysis, according to the authors.

The overall proportion of transmission from presymptomatic and never-symptomatic individuals is key to identifying mitigation measures that may be able to control SARS-CoV-2, the authors stated.

For example, they explain, if the infection reproduction number (R) in a particular setting is 2.0, a reduction in transmission of at least 50% is needed in order to reduce R to below 1.0. “Given that in some settings R is likely much greater than 2 and more than half of transmissions may come from individuals who are asymptomatic at the time of transmission, effective control must mitigate transmission risk from people without symptoms,” they wrote.

The authors acknowledge that the study applies a simplistic model to a complex and evolving phenomenon, and that the exact proportions of presymptomatic and never-symptomatic transmission and the incubation periods are not known. They also note symptoms and transmissions appear to vary across different population groups, with older individuals more likely than younger persons to experience symptoms, according to previous studies.

“Assume that everyone is potentially infected”

Other experts agree that expanded testing of asymptomatic individuals is important. “Screening for fever and isolation of symptomatic individuals is a common-sense approach to help prevent spread, but these measures are by no means adequate since it’s been clearly documented that individuals who are either asymptomatic or presymptomatic can still spread the virus,” said Brett Williams, MD, an infectious disease specialist and assistant professor of medicine at Rush University in Chicago. 

“As we saw with the White House Rose Garden superspreader outbreak, testing does not reliably exclude infection either because the tested individual has not yet become positive or the test is falsely negative,” Dr. Williams, who was not involved in the CDC study, said in an interview. He further noted that when prevalence is as high as it currently is in the United States, the rate of false negatives will be high because a large proportion of those screened will be unknowingly infected.

At his center, all visitors and staff are screened with a temperature probe on entry, and since the earliest days of the pandemic, universal masking has been required. “Nationally there have been many instances of hospital break room outbreaks because of staff eating lunch together, and these outbreaks also demonstrate the incompleteness of symptomatic isolation,” Dr. Williams said.

For his part, virologist Frank Esper, MD, a pediatric infectious disease specialist at the Cleveland Clinic, said that while it’s been understood for some time that many infected people will not exhibit symptoms, “the question that remains is just how infectious are they?”

Dr. Esper’s takeaway from the modeling study is not so much that we need more screening of possibly exposed but asymptomatic people, but rather testing symptomatic people and tracing their contacts is not enough.

“We need to continue to assume that everyone is potentially infected whether they know it or not. And even though we have ramped up our testing to a much greater capacity than in the first wave, we need to continue to wear masks and socially distance because just identifying people who are sick and isolating or quarantining them is not going to be enough to contain the pandemic.”

And although assumption-based modeling is helpful, it cannot tell us “how many asymptomatic people are actually infected,” said Dr. Esper, who was not involved in the CDC study.

Dr. Esper also pointed out that the study estimates are based on data from early Chinese studies, but the virus has since changed. The new, more transmissible strain in the United States and elsewhere may involve not only more infections but also a longer presymptomatic stage. “So the CDC study may actually undershoot asymptomatic infections,” he said. 

He also agreed with the authors that when it comes to infection, not all humans are equal. “Older people tend to be more symptomatic and become symptomatic more quickly so the asymptomatic rate is not the same across board from young people age 20 to older people.”

The bottom line, said David. A. Hirschwerk, MD, an infectious disease specialist at Northwell Health in Manhasset, N.Y., is that these data support the maintenance of protective measures we’ve been taking over the past months. “They support the concept that asymptomatic people are a significant source of transmission and that we need to adhere to mask wearing and social distancing, particularly indoors,” Dr. Hirschwerk, who was not involved in the analysis, said in an interview. “More testing would be better but it has to be fast and it has to be efficient, and there are a lot of challenges to overcome.”

The study was done as part of the CDC’s coronavirus disease 2019 response and was supported solely by federal base and response funding. The authors and commentators have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

As COVID-19 cases surge and vaccinations lag, health authorities continue to seek additional ways to mitigate the spread of the novel coronavirus.

Now, a modeling study estimates that more than half of transmissions come from pre-, never-, and asymptomatic individuals, indicating that symptom-based screening will have little effect on spread.

Courtesy NIAID

The analysis

Based on data from several COVID-19 studies from last year, the CDC’s analytical model assumes at baseline that infectiousness peaks at the median point of symptom onset, and that 30% of infected individuals never develop symptoms but are nevertheless 75% as infectious as those who develop overt symptoms.

The investigators then model multiple scenarios of transmission based pre- and never-symptomatic individuals, assuming different incubation and infectious periods, and varying numbers of days from point of infection to symptom onset.

When combined, the models predicts that 59% of all transmission would come from asymptomatic transmission – 35% from presymptomatic individuals and 24% from never-symptomatic individuals.

The findings complement those of an earlier CDC analysis, according to the authors.

The overall proportion of transmission from presymptomatic and never-symptomatic individuals is key to identifying mitigation measures that may be able to control SARS-CoV-2, the authors stated.

For example, they explain, if the infection reproduction number (R) in a particular setting is 2.0, a reduction in transmission of at least 50% is needed in order to reduce R to below 1.0. “Given that in some settings R is likely much greater than 2 and more than half of transmissions may come from individuals who are asymptomatic at the time of transmission, effective control must mitigate transmission risk from people without symptoms,” they wrote.

The authors acknowledge that the study applies a simplistic model to a complex and evolving phenomenon, and that the exact proportions of presymptomatic and never-symptomatic transmission and the incubation periods are not known. They also note symptoms and transmissions appear to vary across different population groups, with older individuals more likely than younger persons to experience symptoms, according to previous studies.

“Assume that everyone is potentially infected”

Other experts agree that expanded testing of asymptomatic individuals is important. “Screening for fever and isolation of symptomatic individuals is a common-sense approach to help prevent spread, but these measures are by no means adequate since it’s been clearly documented that individuals who are either asymptomatic or presymptomatic can still spread the virus,” said Brett Williams, MD, an infectious disease specialist and assistant professor of medicine at Rush University in Chicago. 

“As we saw with the White House Rose Garden superspreader outbreak, testing does not reliably exclude infection either because the tested individual has not yet become positive or the test is falsely negative,” Dr. Williams, who was not involved in the CDC study, said in an interview. He further noted that when prevalence is as high as it currently is in the United States, the rate of false negatives will be high because a large proportion of those screened will be unknowingly infected.

At his center, all visitors and staff are screened with a temperature probe on entry, and since the earliest days of the pandemic, universal masking has been required. “Nationally there have been many instances of hospital break room outbreaks because of staff eating lunch together, and these outbreaks also demonstrate the incompleteness of symptomatic isolation,” Dr. Williams said.

For his part, virologist Frank Esper, MD, a pediatric infectious disease specialist at the Cleveland Clinic, said that while it’s been understood for some time that many infected people will not exhibit symptoms, “the question that remains is just how infectious are they?”

Dr. Esper’s takeaway from the modeling study is not so much that we need more screening of possibly exposed but asymptomatic people, but rather testing symptomatic people and tracing their contacts is not enough.

“We need to continue to assume that everyone is potentially infected whether they know it or not. And even though we have ramped up our testing to a much greater capacity than in the first wave, we need to continue to wear masks and socially distance because just identifying people who are sick and isolating or quarantining them is not going to be enough to contain the pandemic.”

And although assumption-based modeling is helpful, it cannot tell us “how many asymptomatic people are actually infected,” said Dr. Esper, who was not involved in the CDC study.

Dr. Esper also pointed out that the study estimates are based on data from early Chinese studies, but the virus has since changed. The new, more transmissible strain in the United States and elsewhere may involve not only more infections but also a longer presymptomatic stage. “So the CDC study may actually undershoot asymptomatic infections,” he said. 

He also agreed with the authors that when it comes to infection, not all humans are equal. “Older people tend to be more symptomatic and become symptomatic more quickly so the asymptomatic rate is not the same across board from young people age 20 to older people.”

The bottom line, said David. A. Hirschwerk, MD, an infectious disease specialist at Northwell Health in Manhasset, N.Y., is that these data support the maintenance of protective measures we’ve been taking over the past months. “They support the concept that asymptomatic people are a significant source of transmission and that we need to adhere to mask wearing and social distancing, particularly indoors,” Dr. Hirschwerk, who was not involved in the analysis, said in an interview. “More testing would be better but it has to be fast and it has to be efficient, and there are a lot of challenges to overcome.”

The study was done as part of the CDC’s coronavirus disease 2019 response and was supported solely by federal base and response funding. The authors and commentators have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

For too long, eating disorders have been considered a disease that afflicted mostly affluent white teenage girls, but there really is no type for eating disorders, said Laurie L. Hornberger, MD, MPH, lead author of a new clinical report on eating disorders in children and adolescents prepared by the American Academy of Pediatrics Committee on Adolescence.

FatCamera/E+

In a separate interview with Pediatric News, Dr. Hornberger, associate professor of pediatrics, University of Missouri–Kansas City, explained that eating disorders occur across the spectrum of races, ethnicities, sexes, and socioeconomic statuses, so “getting caught up in that stereotype can cause you to overlook kids with significant problems.” Pediatricians are on the front line in identifying and referring eating disorders for treatment, which is crucial to earlier detection, intervention, and better outcomes, she said.

“Once you become familiar with the signs and symptoms of EDs [eating disorders] and actively start screening for them, you realize how common they are,” she noted, adding that pediatricians should be inquiring routinely about body image, attempts at weight management and what was involved in that weight management. Efforts to restrict calories, limit food choices/groups, exercise excessively, force vomiting, abuse laxatives, etc., are all signs. If the child/adolescent experiences guilt with eating, feels the need to compensate for their eating with exercise or purging, is preoccupied with thoughts of food or calorie counting, feels he/she has lost control of their eating, or experiences uncontrollable binges where they are unable to stop eating despite feeling full and wanting to stop, these are all further evidence of an eating disorder, she added.

There are also physical clues to alert pediatricians. Abrupt or sharp increases or decreases in weight, as measured in growth charts, should be monitored and questioned, Dr. Hornberger cautioned. Physicians should be careful to hold compliments on weight loss until learning how the weight loss was achieved. “Vital signs, such as a resting bradycardia and orthostatic tachycardia, can reflect malnutrition, as can other physical findings. Although lab screening is frequently normal, it should not, by itself, rule out an [eating disorder]. Pediatricians should also be aware of the signs and symptoms of medical instability in an [eating disorder] patient that warrant hospitalization for renourishment,” she explained.
 

Number of eating disorders increased in 2020

Current pandemic conditions have shown an uptick in the number of referrals and long wait lists for eating disorder centers, noted Dr. Hornberger. Having a formal eating disorder treatment program nearby is a luxury not all communities have, so being able to call upon primary care pediatricians to be an active part of a treatment team, which ideally includes a mental health provider and dietitian, both experienced in eating disorders, is pretty important. In coordination with the team, pediatricians are responsible for monitoring physical recovery and remaining alert for signs of struggle to recover and the need for a higher level of care.

In a separate interview with Pediatric News, Margaret Thew, DNP, FNP-BC, medical director of adolescent medicine at the Medical College of Wisconsin, Milwaukee, observed, “COVID-19 has created a surge of children and adolescents struggling with eating disorders. Eating disorder numbers have been associated with social media promoting the avoidance of COVID-19–related weight gain and influencers promoting thin body image. The abrupt end of face-to-face learning, sports participation, and generalized anxiety have further influenced mental health and disordered eating behaviors. Early in the pandemic, the true impact on the psychosocial well-being of children and teens was not known. We are only now seeing the impact months into this pandemic. The timeliness of the American Association of Pediatrics guidelines on the identification and management of children and teens presenting with an eating disorder is pivotal to recognition and treatment,” she said.

“I applaud the AAP for presenting timely guidelines on the evaluation and management of eating disorders for the general pediatrician, yet feel the authors fell short in recognizing the challenges of mitigating management of an eating disorder,” Ms. Thew added.

“Treatment of disordered eating requires all parties to accept the diagnosis and no longer support unhealthy eating patterns. The environment rationalizing the disordered eating may require changes to reduce behaviors and improve nutrition,” she cautioned.
 

New guidelines offer a range of diagnostic and treatment resources

In preparing the current report, the authors included the most recent definitions of eating disorders outlined in the “Diagnostic and Statistical Manual of Mental Disorders,” 5th Edition (DSM-5). Special attention was paid to four classifications of eating disorders in particular – anorexia nervosa (AN), avoidant/restrictive food intake disorder (ARFID); binge-eating disorder (BED); and bulimia nervosa (BN) – because so many disorders are subclassified under these.

Beyond providing a list of comprehensive definitions, the guidance reviews prevalence data for eating disorders, and provides detailed screening, assessment, and laboratory evaluation guidelines. Medical complications, including psychological, neurologic, dermatologic, dental and/or oral, cardiovascular, gastrointestinal, renal and electrolyte, and endocrine effects are discussed in detail as are treatment principles, financial considerations, and prognosis. Besides the important prevention and advocacy roles the authors identify for pediatricians, the guidelines highlight four key areas where pediatricians play a key role in the screening and management of eating disorders, as touched on previously by the guidance authors in this article.

In a separate AAP press release, Margo Lane, MD, coauthor of the report, noted, “As pediatricians, there is much we can also do outside the clinic to advocate for our patients, through legislation and policy that support services, including medical care, nutritional intervention, mental health treatment, and care coordination.” Physicians can also play an important role in reprograming familial and societal attitudes and behaviors by encouraging more positive language that deemphasizes weight and embraces and celebrates kids of all shapes and sizes, added Dr. Lane.

Dr. Hornberger and colleagues as well as Ms. Thew had no conflicts of interest and no relevant financial disclosures.

SOURCE: Pediatrics. 2021;147(1):e2020040279. doi: 10.1542/peds.2020-040279.

For too long, eating disorders have been considered a disease that afflicted mostly affluent white teenage girls, but there really is no type for eating disorders, said Laurie L. Hornberger, MD, MPH, lead author of a new clinical report on eating disorders in children and adolescents prepared by the American Academy of Pediatrics Committee on Adolescence.

FatCamera/E+

In a separate interview with Pediatric News, Dr. Hornberger, associate professor of pediatrics, University of Missouri–Kansas City, explained that eating disorders occur across the spectrum of races, ethnicities, sexes, and socioeconomic statuses, so “getting caught up in that stereotype can cause you to overlook kids with significant problems.” Pediatricians are on the front line in identifying and referring eating disorders for treatment, which is crucial to earlier detection, intervention, and better outcomes, she said.

“Once you become familiar with the signs and symptoms of EDs [eating disorders] and actively start screening for them, you realize how common they are,” she noted, adding that pediatricians should be inquiring routinely about body image, attempts at weight management and what was involved in that weight management. Efforts to restrict calories, limit food choices/groups, exercise excessively, force vomiting, abuse laxatives, etc., are all signs. If the child/adolescent experiences guilt with eating, feels the need to compensate for their eating with exercise or purging, is preoccupied with thoughts of food or calorie counting, feels he/she has lost control of their eating, or experiences uncontrollable binges where they are unable to stop eating despite feeling full and wanting to stop, these are all further evidence of an eating disorder, she added.

There are also physical clues to alert pediatricians. Abrupt or sharp increases or decreases in weight, as measured in growth charts, should be monitored and questioned, Dr. Hornberger cautioned. Physicians should be careful to hold compliments on weight loss until learning how the weight loss was achieved. “Vital signs, such as a resting bradycardia and orthostatic tachycardia, can reflect malnutrition, as can other physical findings. Although lab screening is frequently normal, it should not, by itself, rule out an [eating disorder]. Pediatricians should also be aware of the signs and symptoms of medical instability in an [eating disorder] patient that warrant hospitalization for renourishment,” she explained.
 

Number of eating disorders increased in 2020

Current pandemic conditions have shown an uptick in the number of referrals and long wait lists for eating disorder centers, noted Dr. Hornberger. Having a formal eating disorder treatment program nearby is a luxury not all communities have, so being able to call upon primary care pediatricians to be an active part of a treatment team, which ideally includes a mental health provider and dietitian, both experienced in eating disorders, is pretty important. In coordination with the team, pediatricians are responsible for monitoring physical recovery and remaining alert for signs of struggle to recover and the need for a higher level of care.

In a separate interview with Pediatric News, Margaret Thew, DNP, FNP-BC, medical director of adolescent medicine at the Medical College of Wisconsin, Milwaukee, observed, “COVID-19 has created a surge of children and adolescents struggling with eating disorders. Eating disorder numbers have been associated with social media promoting the avoidance of COVID-19–related weight gain and influencers promoting thin body image. The abrupt end of face-to-face learning, sports participation, and generalized anxiety have further influenced mental health and disordered eating behaviors. Early in the pandemic, the true impact on the psychosocial well-being of children and teens was not known. We are only now seeing the impact months into this pandemic. The timeliness of the American Association of Pediatrics guidelines on the identification and management of children and teens presenting with an eating disorder is pivotal to recognition and treatment,” she said.

“I applaud the AAP for presenting timely guidelines on the evaluation and management of eating disorders for the general pediatrician, yet feel the authors fell short in recognizing the challenges of mitigating management of an eating disorder,” Ms. Thew added.

“Treatment of disordered eating requires all parties to accept the diagnosis and no longer support unhealthy eating patterns. The environment rationalizing the disordered eating may require changes to reduce behaviors and improve nutrition,” she cautioned.
 

New guidelines offer a range of diagnostic and treatment resources

In preparing the current report, the authors included the most recent definitions of eating disorders outlined in the “Diagnostic and Statistical Manual of Mental Disorders,” 5th Edition (DSM-5). Special attention was paid to four classifications of eating disorders in particular – anorexia nervosa (AN), avoidant/restrictive food intake disorder (ARFID); binge-eating disorder (BED); and bulimia nervosa (BN) – because so many disorders are subclassified under these.

Beyond providing a list of comprehensive definitions, the guidance reviews prevalence data for eating disorders, and provides detailed screening, assessment, and laboratory evaluation guidelines. Medical complications, including psychological, neurologic, dermatologic, dental and/or oral, cardiovascular, gastrointestinal, renal and electrolyte, and endocrine effects are discussed in detail as are treatment principles, financial considerations, and prognosis. Besides the important prevention and advocacy roles the authors identify for pediatricians, the guidelines highlight four key areas where pediatricians play a key role in the screening and management of eating disorders, as touched on previously by the guidance authors in this article.

In a separate AAP press release, Margo Lane, MD, coauthor of the report, noted, “As pediatricians, there is much we can also do outside the clinic to advocate for our patients, through legislation and policy that support services, including medical care, nutritional intervention, mental health treatment, and care coordination.” Physicians can also play an important role in reprograming familial and societal attitudes and behaviors by encouraging more positive language that deemphasizes weight and embraces and celebrates kids of all shapes and sizes, added Dr. Lane.

Dr. Hornberger and colleagues as well as Ms. Thew had no conflicts of interest and no relevant financial disclosures.

SOURCE: Pediatrics. 2021;147(1):e2020040279. doi: 10.1542/peds.2020-040279.

For too long, eating disorders have been considered a disease that afflicted mostly affluent white teenage girls, but there really is no type for eating disorders, said Laurie L. Hornberger, MD, MPH, lead author of a new clinical report on eating disorders in children and adolescents prepared by the American Academy of Pediatrics Committee on Adolescence.

FatCamera/E+

In a separate interview with Pediatric News, Dr. Hornberger, associate professor of pediatrics, University of Missouri–Kansas City, explained that eating disorders occur across the spectrum of races, ethnicities, sexes, and socioeconomic statuses, so “getting caught up in that stereotype can cause you to overlook kids with significant problems.” Pediatricians are on the front line in identifying and referring eating disorders for treatment, which is crucial to earlier detection, intervention, and better outcomes, she said.

“Once you become familiar with the signs and symptoms of EDs [eating disorders] and actively start screening for them, you realize how common they are,” she noted, adding that pediatricians should be inquiring routinely about body image, attempts at weight management and what was involved in that weight management. Efforts to restrict calories, limit food choices/groups, exercise excessively, force vomiting, abuse laxatives, etc., are all signs. If the child/adolescent experiences guilt with eating, feels the need to compensate for their eating with exercise or purging, is preoccupied with thoughts of food or calorie counting, feels he/she has lost control of their eating, or experiences uncontrollable binges where they are unable to stop eating despite feeling full and wanting to stop, these are all further evidence of an eating disorder, she added.

There are also physical clues to alert pediatricians. Abrupt or sharp increases or decreases in weight, as measured in growth charts, should be monitored and questioned, Dr. Hornberger cautioned. Physicians should be careful to hold compliments on weight loss until learning how the weight loss was achieved. “Vital signs, such as a resting bradycardia and orthostatic tachycardia, can reflect malnutrition, as can other physical findings. Although lab screening is frequently normal, it should not, by itself, rule out an [eating disorder]. Pediatricians should also be aware of the signs and symptoms of medical instability in an [eating disorder] patient that warrant hospitalization for renourishment,” she explained.
 

Number of eating disorders increased in 2020

Current pandemic conditions have shown an uptick in the number of referrals and long wait lists for eating disorder centers, noted Dr. Hornberger. Having a formal eating disorder treatment program nearby is a luxury not all communities have, so being able to call upon primary care pediatricians to be an active part of a treatment team, which ideally includes a mental health provider and dietitian, both experienced in eating disorders, is pretty important. In coordination with the team, pediatricians are responsible for monitoring physical recovery and remaining alert for signs of struggle to recover and the need for a higher level of care.

In a separate interview with Pediatric News, Margaret Thew, DNP, FNP-BC, medical director of adolescent medicine at the Medical College of Wisconsin, Milwaukee, observed, “COVID-19 has created a surge of children and adolescents struggling with eating disorders. Eating disorder numbers have been associated with social media promoting the avoidance of COVID-19–related weight gain and influencers promoting thin body image. The abrupt end of face-to-face learning, sports participation, and generalized anxiety have further influenced mental health and disordered eating behaviors. Early in the pandemic, the true impact on the psychosocial well-being of children and teens was not known. We are only now seeing the impact months into this pandemic. The timeliness of the American Association of Pediatrics guidelines on the identification and management of children and teens presenting with an eating disorder is pivotal to recognition and treatment,” she said.

“I applaud the AAP for presenting timely guidelines on the evaluation and management of eating disorders for the general pediatrician, yet feel the authors fell short in recognizing the challenges of mitigating management of an eating disorder,” Ms. Thew added.

“Treatment of disordered eating requires all parties to accept the diagnosis and no longer support unhealthy eating patterns. The environment rationalizing the disordered eating may require changes to reduce behaviors and improve nutrition,” she cautioned.
 

New guidelines offer a range of diagnostic and treatment resources

In preparing the current report, the authors included the most recent definitions of eating disorders outlined in the “Diagnostic and Statistical Manual of Mental Disorders,” 5th Edition (DSM-5). Special attention was paid to four classifications of eating disorders in particular – anorexia nervosa (AN), avoidant/restrictive food intake disorder (ARFID); binge-eating disorder (BED); and bulimia nervosa (BN) – because so many disorders are subclassified under these.

Beyond providing a list of comprehensive definitions, the guidance reviews prevalence data for eating disorders, and provides detailed screening, assessment, and laboratory evaluation guidelines. Medical complications, including psychological, neurologic, dermatologic, dental and/or oral, cardiovascular, gastrointestinal, renal and electrolyte, and endocrine effects are discussed in detail as are treatment principles, financial considerations, and prognosis. Besides the important prevention and advocacy roles the authors identify for pediatricians, the guidelines highlight four key areas where pediatricians play a key role in the screening and management of eating disorders, as touched on previously by the guidance authors in this article.

In a separate AAP press release, Margo Lane, MD, coauthor of the report, noted, “As pediatricians, there is much we can also do outside the clinic to advocate for our patients, through legislation and policy that support services, including medical care, nutritional intervention, mental health treatment, and care coordination.” Physicians can also play an important role in reprograming familial and societal attitudes and behaviors by encouraging more positive language that deemphasizes weight and embraces and celebrates kids of all shapes and sizes, added Dr. Lane.

Dr. Hornberger and colleagues as well as Ms. Thew had no conflicts of interest and no relevant financial disclosures.

SOURCE: Pediatrics. 2021;147(1):e2020040279. doi: 10.1542/peds.2020-040279.

Health care providers should be ready to treat rare cases of anaphylaxis following administration of COVID-19 vaccines, federal medical officials have urged. The officials also stressed the importance of continuing vaccinations, despite reports of the rare side effect.

There have been 29 cases of anaphylaxis to date following administration of a COVID-19 vaccine, officials from the Centers for Disease Control and Prevention said in a call with reporters on Jan. 6.

The severe allergic reaction, which appears to be rare, can happen with either the Pfizer-BioNTech vaccine or the rival Moderna product. The Food and Drug Administration granted emergency use authorizations for these two vaccines in December.

Even with the cases seen to date, the COVID-19 vaccines remain a “good value proposition,” Nancy Messonnier, MD, director of the CDC’s National Center for Immunization, said in the call.

There have been about 11.1 cases of anaphylaxis per million doses with the Pfizer-BioNTech COVID-19 vaccine, which is higher than the estimated 1.3 cases per million doses with influenza vaccines, she said. But the low risk of anaphylaxis must be balanced against the threat of COVID-19, which currently claims about 2,000 lives a day in the United States, she said. In addition, many people are reporting long-term complications with COVID-19 even if they recover.

Kept in context, the data on anaphylaxis should not scare people away from getting a COVID-19 vaccine, she added.

“Their risk from COVID and poor outcomes is still more than the risk of a severe outcome from the vaccine,” Dr. Messonnier said. “And fortunately, we know how to treat anaphylaxis.”

Dr. Messonnier urged health care workers administering COVID-19 vaccines to be prepared.

“Anybody administering vaccines needs not just to have the EpiPen available, but frankly, to know how to use it,” Dr. Messonnier said.
 

MMWR details

The CDC on Jan. 6 also provided an update on anaphylaxis in Morbidity and Mortality Weekly Report (MMWR).

The information included in the report was based on cases reported with the Pfizer-BioNTech vaccine – the first to get emergency use authorization from the FDA. On the call with reporters, CDC officials confirmed there have been additional reports since then and anaphylaxis has been reported with both the Pfizer-BioNTech and Moderna vaccines. CDC officials said they could not give a breakdown of how many cases were linked to each of these products at this time.

Between Dec. 14 and 23, 2020, monitoring by the Vaccine Adverse Event Reporting System detected 21 cases of anaphylaxis after administration of a reported 1,893,360 first doses of the Pfizer-BioNTech COVID-19 vaccine. Most reactions – 71% – occurred within 15 minutes of vaccination.

A version of this article first appeared on Medscape.com.

Health care providers should be ready to treat rare cases of anaphylaxis following administration of COVID-19 vaccines, federal medical officials have urged. The officials also stressed the importance of continuing vaccinations, despite reports of the rare side effect.

There have been 29 cases of anaphylaxis to date following administration of a COVID-19 vaccine, officials from the Centers for Disease Control and Prevention said in a call with reporters on Jan. 6.

The severe allergic reaction, which appears to be rare, can happen with either the Pfizer-BioNTech vaccine or the rival Moderna product. The Food and Drug Administration granted emergency use authorizations for these two vaccines in December.

Even with the cases seen to date, the COVID-19 vaccines remain a “good value proposition,” Nancy Messonnier, MD, director of the CDC’s National Center for Immunization, said in the call.

There have been about 11.1 cases of anaphylaxis per million doses with the Pfizer-BioNTech COVID-19 vaccine, which is higher than the estimated 1.3 cases per million doses with influenza vaccines, she said. But the low risk of anaphylaxis must be balanced against the threat of COVID-19, which currently claims about 2,000 lives a day in the United States, she said. In addition, many people are reporting long-term complications with COVID-19 even if they recover.

Kept in context, the data on anaphylaxis should not scare people away from getting a COVID-19 vaccine, she added.

“Their risk from COVID and poor outcomes is still more than the risk of a severe outcome from the vaccine,” Dr. Messonnier said. “And fortunately, we know how to treat anaphylaxis.”

Dr. Messonnier urged health care workers administering COVID-19 vaccines to be prepared.

“Anybody administering vaccines needs not just to have the EpiPen available, but frankly, to know how to use it,” Dr. Messonnier said.
 

MMWR details

The CDC on Jan. 6 also provided an update on anaphylaxis in Morbidity and Mortality Weekly Report (MMWR).

The information included in the report was based on cases reported with the Pfizer-BioNTech vaccine – the first to get emergency use authorization from the FDA. On the call with reporters, CDC officials confirmed there have been additional reports since then and anaphylaxis has been reported with both the Pfizer-BioNTech and Moderna vaccines. CDC officials said they could not give a breakdown of how many cases were linked to each of these products at this time.

Between Dec. 14 and 23, 2020, monitoring by the Vaccine Adverse Event Reporting System detected 21 cases of anaphylaxis after administration of a reported 1,893,360 first doses of the Pfizer-BioNTech COVID-19 vaccine. Most reactions – 71% – occurred within 15 minutes of vaccination.

A version of this article first appeared on Medscape.com.

Health care providers should be ready to treat rare cases of anaphylaxis following administration of COVID-19 vaccines, federal medical officials have urged. The officials also stressed the importance of continuing vaccinations, despite reports of the rare side effect.

There have been 29 cases of anaphylaxis to date following administration of a COVID-19 vaccine, officials from the Centers for Disease Control and Prevention said in a call with reporters on Jan. 6.

The severe allergic reaction, which appears to be rare, can happen with either the Pfizer-BioNTech vaccine or the rival Moderna product. The Food and Drug Administration granted emergency use authorizations for these two vaccines in December.

Even with the cases seen to date, the COVID-19 vaccines remain a “good value proposition,” Nancy Messonnier, MD, director of the CDC’s National Center for Immunization, said in the call.

There have been about 11.1 cases of anaphylaxis per million doses with the Pfizer-BioNTech COVID-19 vaccine, which is higher than the estimated 1.3 cases per million doses with influenza vaccines, she said. But the low risk of anaphylaxis must be balanced against the threat of COVID-19, which currently claims about 2,000 lives a day in the United States, she said. In addition, many people are reporting long-term complications with COVID-19 even if they recover.

Kept in context, the data on anaphylaxis should not scare people away from getting a COVID-19 vaccine, she added.

“Their risk from COVID and poor outcomes is still more than the risk of a severe outcome from the vaccine,” Dr. Messonnier said. “And fortunately, we know how to treat anaphylaxis.”

Dr. Messonnier urged health care workers administering COVID-19 vaccines to be prepared.

“Anybody administering vaccines needs not just to have the EpiPen available, but frankly, to know how to use it,” Dr. Messonnier said.
 

MMWR details

The CDC on Jan. 6 also provided an update on anaphylaxis in Morbidity and Mortality Weekly Report (MMWR).

The information included in the report was based on cases reported with the Pfizer-BioNTech vaccine – the first to get emergency use authorization from the FDA. On the call with reporters, CDC officials confirmed there have been additional reports since then and anaphylaxis has been reported with both the Pfizer-BioNTech and Moderna vaccines. CDC officials said they could not give a breakdown of how many cases were linked to each of these products at this time.

Between Dec. 14 and 23, 2020, monitoring by the Vaccine Adverse Event Reporting System detected 21 cases of anaphylaxis after administration of a reported 1,893,360 first doses of the Pfizer-BioNTech COVID-19 vaccine. Most reactions – 71% – occurred within 15 minutes of vaccination.

A version of this article first appeared on Medscape.com.

Krissy Williams, 15, had attempted suicide before, but never with pills.

The teen was diagnosed with schizophrenia when she was 9. People with this chronic mental health condition perceive reality differently and often experience hallucinations and delusions. She learned to manage these symptoms with a variety of services offered at home and at school.

But the pandemic upended those lifelines. She lost much of the support offered at school. She also lost regular contact with her peers. Her mother lost access to respite care – which allowed her to take a break.

On a Thursday in October, the isolation and sadness came to a head. As Krissy’s mother, Patricia Williams, called a mental crisis hotline for help, she said, Krissy stood on the deck of their Maryland home with a bottle of pain medication in one hand and water in the other.

Before Patricia could react, Krissy placed the pills in her mouth and swallowed.

Efforts to contain the spread of the novel coronavirus in the United States have led to drastic changes in the way children and teens learn, play and socialize. Tens of millions of students are attending school through some form of distance learning. Many extracurricular activities have been canceled. Playgrounds, zoos, and other recreational spaces have closed. Kids like Krissy have struggled to cope and the toll is becoming evident.

Government figures show the proportion of children who arrived in EDs with mental health issues increased 24% from mid-March through mid-October, compared with the same period in 2019. Among preteens and adolescents, it rose by 31%. Anecdotally, some hospitals said they are seeing more cases of severe depression and suicidal thoughts among children, particularly attempts to overdose.

The increased demand for intensive mental health care that has accompanied the pandemic has worsened issues that have long plagued the system. In some hospitals, the number of children unable to immediately get a bed in the psychiatric unit rose. Others reduced the number of beds or closed psychiatric units altogether to reduce the spread of COVID-19.

“It’s only a matter of time before a tsunami sort of reaches the shore of our service system, and it’s going to be overwhelmed with the mental health needs of kids,” said Jason Williams, PsyD, a psychologist and director of operations of the Pediatric Mental Health Institute at Children’s Hospital Colorado, Aurora.

“I think we’re just starting to see the tip of the iceberg, to be honest with you.”

Before COVID, more than 8 million kids between ages 3 and 17 were diagnosed with a mental or behavioral health condition, according to the most recent National Survey of Children’s Health. A separate survey from the Centers for Disease Control and Prevention found one in three high school students in 2019 reported feeling persistently sad and hopeless – a 40% increase from 2009.

The coronavirus pandemic appears to be adding to these difficulties. A review of 80 studies found forced isolation and loneliness among children correlated with an increased risk of depression.

“We’re all social beings, but they’re [teenagers] at the point in their development where their peers are their reality,” said Terrie Andrews, PhD, a psychologist and administrator of behavioral health at Wolfson Children’s Hospital in Jacksonville, Fla. “Their peers are their grounding mechanism.”

Children’s hospitals in Colorado, Missouri, and New York all reported an uptick in the number of patients who thought about or attempted suicide. Clinicians also mentioned spikes in children with severe depression and those with autism who are acting out.

The number of overdose attempts among children has caught the attention of clinicians at two facilities. Dr. Andrews said the facility gives out lockboxes for weapons and medication to the public – including parents who come in after children attempted to take their life using medication.

Children’s National Hospital in Washington, D.C., also has experienced an uptick, said Colby Tyson, MD, associate director of inpatient psychiatry. She’s seen children’s mental health deteriorate because of a likely increase in family conflict – often a consequence of the chaos caused by the pandemic. Without school, connections with peers or employment, families don’t have the opportunity to spend time away from one another and regroup, which can add stress to an already tense situation.

“That break is gone,” she said.

The higher demand for child mental health services caused by the pandemic has made finding a bed at an inpatient unit more difficult.

Now, some hospitals report running at full capacity and having more children “boarding,” or sleeping in EDs before being admitted to the psychiatric unit. Among them is the Pediatric Mental Health Institute at Children’s Hospital Colorado. Williams said the inpatient unit has been full since March. Some children now wait nearly 2 days for a bed, up from the 8-10 hours common before the pandemic.

Cincinnati Children’s Hospital Medical Center in Ohio is also running at full capacity, said clinicians, and had several days in which the unit was above capacity and placed kids instead in the emergency department waiting to be admitted. In Florida, Dr. Andrews said, up to 25 children have been held on surgical floors at Wolfson Children’s while waiting for a spot to open in the inpatient psychiatric unit. Their wait could last as long as 5 days, she said.

Multiple hospitals said the usual summer slump in child psychiatric admissions was missing last year. “We never saw that during the pandemic,” said Andrews. “We stayed completely busy the entire time.”

Some facilities have decided to reduce the number of beds available to maintain physical distancing, further constricting supply. Children’s National in D.C. cut five beds from its unit to maintain single occupancy in every room, said Adelaide Robb, MD, division chief of psychiatry and behavioral sciences.

The measures taken to curb the spread of COVID have also affected the way hospitalized children receive mental health services. In addition to providers wearing protective equipment, some hospitals like Cincinnati Children’s rearranged furniture and placed cues on the floor as reminders to stay 6 feet apart. The University of Pittsburgh Medical Center’s Western Psychiatric Hospital and other facilities encourage children to keep their masks on by offering rewards like extra computer time. Patients at Children’s National now eat in their rooms, a change from when they ate together.

Despite the need for distance, social interaction still represents an important part of mental health care for children, clinicians said. Facilities have come up with various ways to do so safely, including creating smaller pods for group therapy. Children at Cincinnati Children’s Hospital can play with toys, but only with ones that can be wiped clean afterward. No cards or board games, said Suzanne Sampang, MD, clinical medical director for child and adolescent psychiatry at the hospital.

“I think what’s different about psychiatric treatment is that, really, interaction is the treatment,” she said, “just as much as a medication.”

The added infection-control precautions pose challenges to forging therapeutic connections. Masks can complicate the ability to read a person’s face. Online meetings make it difficult to build trust between a patient and a therapist.

“There’s something about the real relationship in person that the best technology can’t give to you,” said Dr. Robb.

For now, Krissy Williams is relying on virtual platforms to receive some of her mental health services. Despite being hospitalized and suffering brain damage due to the overdose, she is now at home and in good spirits. She enjoys geometry, dancing on TikTok, and trying to beat her mother at Super Mario Bros. on the Wii. But being away from her friends, she said, has been a hard adjustment.

“When you’re used to something,” she said, “it’s not easy to change everything.”

Kaiser Health News is a nonprofit news service covering health issues. It is an editorially independent program of Kaiser Family Foundation, which is not affiliated with Kaiser Permanente.

Krissy Williams, 15, had attempted suicide before, but never with pills.

The teen was diagnosed with schizophrenia when she was 9. People with this chronic mental health condition perceive reality differently and often experience hallucinations and delusions. She learned to manage these symptoms with a variety of services offered at home and at school.

But the pandemic upended those lifelines. She lost much of the support offered at school. She also lost regular contact with her peers. Her mother lost access to respite care – which allowed her to take a break.

On a Thursday in October, the isolation and sadness came to a head. As Krissy’s mother, Patricia Williams, called a mental crisis hotline for help, she said, Krissy stood on the deck of their Maryland home with a bottle of pain medication in one hand and water in the other.

Before Patricia could react, Krissy placed the pills in her mouth and swallowed.

Efforts to contain the spread of the novel coronavirus in the United States have led to drastic changes in the way children and teens learn, play and socialize. Tens of millions of students are attending school through some form of distance learning. Many extracurricular activities have been canceled. Playgrounds, zoos, and other recreational spaces have closed. Kids like Krissy have struggled to cope and the toll is becoming evident.

Government figures show the proportion of children who arrived in EDs with mental health issues increased 24% from mid-March through mid-October, compared with the same period in 2019. Among preteens and adolescents, it rose by 31%. Anecdotally, some hospitals said they are seeing more cases of severe depression and suicidal thoughts among children, particularly attempts to overdose.

The increased demand for intensive mental health care that has accompanied the pandemic has worsened issues that have long plagued the system. In some hospitals, the number of children unable to immediately get a bed in the psychiatric unit rose. Others reduced the number of beds or closed psychiatric units altogether to reduce the spread of COVID-19.

“It’s only a matter of time before a tsunami sort of reaches the shore of our service system, and it’s going to be overwhelmed with the mental health needs of kids,” said Jason Williams, PsyD, a psychologist and director of operations of the Pediatric Mental Health Institute at Children’s Hospital Colorado, Aurora.

“I think we’re just starting to see the tip of the iceberg, to be honest with you.”

Before COVID, more than 8 million kids between ages 3 and 17 were diagnosed with a mental or behavioral health condition, according to the most recent National Survey of Children’s Health. A separate survey from the Centers for Disease Control and Prevention found one in three high school students in 2019 reported feeling persistently sad and hopeless – a 40% increase from 2009.

The coronavirus pandemic appears to be adding to these difficulties. A review of 80 studies found forced isolation and loneliness among children correlated with an increased risk of depression.

“We’re all social beings, but they’re [teenagers] at the point in their development where their peers are their reality,” said Terrie Andrews, PhD, a psychologist and administrator of behavioral health at Wolfson Children’s Hospital in Jacksonville, Fla. “Their peers are their grounding mechanism.”

Children’s hospitals in Colorado, Missouri, and New York all reported an uptick in the number of patients who thought about or attempted suicide. Clinicians also mentioned spikes in children with severe depression and those with autism who are acting out.

The number of overdose attempts among children has caught the attention of clinicians at two facilities. Dr. Andrews said the facility gives out lockboxes for weapons and medication to the public – including parents who come in after children attempted to take their life using medication.

Children’s National Hospital in Washington, D.C., also has experienced an uptick, said Colby Tyson, MD, associate director of inpatient psychiatry. She’s seen children’s mental health deteriorate because of a likely increase in family conflict – often a consequence of the chaos caused by the pandemic. Without school, connections with peers or employment, families don’t have the opportunity to spend time away from one another and regroup, which can add stress to an already tense situation.

“That break is gone,” she said.

The higher demand for child mental health services caused by the pandemic has made finding a bed at an inpatient unit more difficult.

Now, some hospitals report running at full capacity and having more children “boarding,” or sleeping in EDs before being admitted to the psychiatric unit. Among them is the Pediatric Mental Health Institute at Children’s Hospital Colorado. Williams said the inpatient unit has been full since March. Some children now wait nearly 2 days for a bed, up from the 8-10 hours common before the pandemic.

Cincinnati Children’s Hospital Medical Center in Ohio is also running at full capacity, said clinicians, and had several days in which the unit was above capacity and placed kids instead in the emergency department waiting to be admitted. In Florida, Dr. Andrews said, up to 25 children have been held on surgical floors at Wolfson Children’s while waiting for a spot to open in the inpatient psychiatric unit. Their wait could last as long as 5 days, she said.

Multiple hospitals said the usual summer slump in child psychiatric admissions was missing last year. “We never saw that during the pandemic,” said Andrews. “We stayed completely busy the entire time.”

Some facilities have decided to reduce the number of beds available to maintain physical distancing, further constricting supply. Children’s National in D.C. cut five beds from its unit to maintain single occupancy in every room, said Adelaide Robb, MD, division chief of psychiatry and behavioral sciences.

The measures taken to curb the spread of COVID have also affected the way hospitalized children receive mental health services. In addition to providers wearing protective equipment, some hospitals like Cincinnati Children’s rearranged furniture and placed cues on the floor as reminders to stay 6 feet apart. The University of Pittsburgh Medical Center’s Western Psychiatric Hospital and other facilities encourage children to keep their masks on by offering rewards like extra computer time. Patients at Children’s National now eat in their rooms, a change from when they ate together.

Despite the need for distance, social interaction still represents an important part of mental health care for children, clinicians said. Facilities have come up with various ways to do so safely, including creating smaller pods for group therapy. Children at Cincinnati Children’s Hospital can play with toys, but only with ones that can be wiped clean afterward. No cards or board games, said Suzanne Sampang, MD, clinical medical director for child and adolescent psychiatry at the hospital.

“I think what’s different about psychiatric treatment is that, really, interaction is the treatment,” she said, “just as much as a medication.”

The added infection-control precautions pose challenges to forging therapeutic connections. Masks can complicate the ability to read a person’s face. Online meetings make it difficult to build trust between a patient and a therapist.

“There’s something about the real relationship in person that the best technology can’t give to you,” said Dr. Robb.

For now, Krissy Williams is relying on virtual platforms to receive some of her mental health services. Despite being hospitalized and suffering brain damage due to the overdose, she is now at home and in good spirits. She enjoys geometry, dancing on TikTok, and trying to beat her mother at Super Mario Bros. on the Wii. But being away from her friends, she said, has been a hard adjustment.

“When you’re used to something,” she said, “it’s not easy to change everything.”

Kaiser Health News is a nonprofit news service covering health issues. It is an editorially independent program of Kaiser Family Foundation, which is not affiliated with Kaiser Permanente.

Krissy Williams, 15, had attempted suicide before, but never with pills.

The teen was diagnosed with schizophrenia when she was 9. People with this chronic mental health condition perceive reality differently and often experience hallucinations and delusions. She learned to manage these symptoms with a variety of services offered at home and at school.

But the pandemic upended those lifelines. She lost much of the support offered at school. She also lost regular contact with her peers. Her mother lost access to respite care – which allowed her to take a break.

On a Thursday in October, the isolation and sadness came to a head. As Krissy’s mother, Patricia Williams, called a mental crisis hotline for help, she said, Krissy stood on the deck of their Maryland home with a bottle of pain medication in one hand and water in the other.

Before Patricia could react, Krissy placed the pills in her mouth and swallowed.

Efforts to contain the spread of the novel coronavirus in the United States have led to drastic changes in the way children and teens learn, play and socialize. Tens of millions of students are attending school through some form of distance learning. Many extracurricular activities have been canceled. Playgrounds, zoos, and other recreational spaces have closed. Kids like Krissy have struggled to cope and the toll is becoming evident.

Government figures show the proportion of children who arrived in EDs with mental health issues increased 24% from mid-March through mid-October, compared with the same period in 2019. Among preteens and adolescents, it rose by 31%. Anecdotally, some hospitals said they are seeing more cases of severe depression and suicidal thoughts among children, particularly attempts to overdose.

The increased demand for intensive mental health care that has accompanied the pandemic has worsened issues that have long plagued the system. In some hospitals, the number of children unable to immediately get a bed in the psychiatric unit rose. Others reduced the number of beds or closed psychiatric units altogether to reduce the spread of COVID-19.

“It’s only a matter of time before a tsunami sort of reaches the shore of our service system, and it’s going to be overwhelmed with the mental health needs of kids,” said Jason Williams, PsyD, a psychologist and director of operations of the Pediatric Mental Health Institute at Children’s Hospital Colorado, Aurora.

“I think we’re just starting to see the tip of the iceberg, to be honest with you.”

Before COVID, more than 8 million kids between ages 3 and 17 were diagnosed with a mental or behavioral health condition, according to the most recent National Survey of Children’s Health. A separate survey from the Centers for Disease Control and Prevention found one in three high school students in 2019 reported feeling persistently sad and hopeless – a 40% increase from 2009.

The coronavirus pandemic appears to be adding to these difficulties. A review of 80 studies found forced isolation and loneliness among children correlated with an increased risk of depression.

“We’re all social beings, but they’re [teenagers] at the point in their development where their peers are their reality,” said Terrie Andrews, PhD, a psychologist and administrator of behavioral health at Wolfson Children’s Hospital in Jacksonville, Fla. “Their peers are their grounding mechanism.”

Children’s hospitals in Colorado, Missouri, and New York all reported an uptick in the number of patients who thought about or attempted suicide. Clinicians also mentioned spikes in children with severe depression and those with autism who are acting out.

The number of overdose attempts among children has caught the attention of clinicians at two facilities. Dr. Andrews said the facility gives out lockboxes for weapons and medication to the public – including parents who come in after children attempted to take their life using medication.

Children’s National Hospital in Washington, D.C., also has experienced an uptick, said Colby Tyson, MD, associate director of inpatient psychiatry. She’s seen children’s mental health deteriorate because of a likely increase in family conflict – often a consequence of the chaos caused by the pandemic. Without school, connections with peers or employment, families don’t have the opportunity to spend time away from one another and regroup, which can add stress to an already tense situation.

“That break is gone,” she said.

The higher demand for child mental health services caused by the pandemic has made finding a bed at an inpatient unit more difficult.

Now, some hospitals report running at full capacity and having more children “boarding,” or sleeping in EDs before being admitted to the psychiatric unit. Among them is the Pediatric Mental Health Institute at Children’s Hospital Colorado. Williams said the inpatient unit has been full since March. Some children now wait nearly 2 days for a bed, up from the 8-10 hours common before the pandemic.

Cincinnati Children’s Hospital Medical Center in Ohio is also running at full capacity, said clinicians, and had several days in which the unit was above capacity and placed kids instead in the emergency department waiting to be admitted. In Florida, Dr. Andrews said, up to 25 children have been held on surgical floors at Wolfson Children’s while waiting for a spot to open in the inpatient psychiatric unit. Their wait could last as long as 5 days, she said.

Multiple hospitals said the usual summer slump in child psychiatric admissions was missing last year. “We never saw that during the pandemic,” said Andrews. “We stayed completely busy the entire time.”

Some facilities have decided to reduce the number of beds available to maintain physical distancing, further constricting supply. Children’s National in D.C. cut five beds from its unit to maintain single occupancy in every room, said Adelaide Robb, MD, division chief of psychiatry and behavioral sciences.

The measures taken to curb the spread of COVID have also affected the way hospitalized children receive mental health services. In addition to providers wearing protective equipment, some hospitals like Cincinnati Children’s rearranged furniture and placed cues on the floor as reminders to stay 6 feet apart. The University of Pittsburgh Medical Center’s Western Psychiatric Hospital and other facilities encourage children to keep their masks on by offering rewards like extra computer time. Patients at Children’s National now eat in their rooms, a change from when they ate together.

Despite the need for distance, social interaction still represents an important part of mental health care for children, clinicians said. Facilities have come up with various ways to do so safely, including creating smaller pods for group therapy. Children at Cincinnati Children’s Hospital can play with toys, but only with ones that can be wiped clean afterward. No cards or board games, said Suzanne Sampang, MD, clinical medical director for child and adolescent psychiatry at the hospital.

“I think what’s different about psychiatric treatment is that, really, interaction is the treatment,” she said, “just as much as a medication.”

The added infection-control precautions pose challenges to forging therapeutic connections. Masks can complicate the ability to read a person’s face. Online meetings make it difficult to build trust between a patient and a therapist.

“There’s something about the real relationship in person that the best technology can’t give to you,” said Dr. Robb.

For now, Krissy Williams is relying on virtual platforms to receive some of her mental health services. Despite being hospitalized and suffering brain damage due to the overdose, she is now at home and in good spirits. She enjoys geometry, dancing on TikTok, and trying to beat her mother at Super Mario Bros. on the Wii. But being away from her friends, she said, has been a hard adjustment.

“When you’re used to something,” she said, “it’s not easy to change everything.”

Kaiser Health News is a nonprofit news service covering health issues. It is an editorially independent program of Kaiser Family Foundation, which is not affiliated with Kaiser Permanente.

Saliva spit tests stack up well against the gold standard for molecular COVID-19 tests – the back-of-the-nose deep swab – without the discomfort and induced coughing or sneezing of the test taker, updated guidelines indicate.

In a press briefing on Jan. 6, the Infectious Diseases Society of America explained the findings of an expert panel that reviewed the literature since the IDSA released its first guidelines in May.

The panel found that saliva tests were especially effective if the test included instructions to cough or clear the throat before spitting into the tube, said panel chair Kimberly E. Hanson, MD, MHS, of University of Utah Health, Salt Lake City.
 

Throat swab alone less effective

Using a throat swab alone was less effective and missed more cases than the other methods, she said.

The IDSA has updated its recommendation: A saliva test or swabs from either the middle or front of the nose front are preferred to a throat swab alone.

A combination of saliva and swabs from the front and middle of the nose and throat together “looked pretty much equivalent” to the gold-standard deep swab, the panel found.

She acknowledged, however, that multiple swabs exacerbate already challenging supply issues.

Saliva samples do come with challenges, Dr. Hanson noted. A laboratory must validate that its systems can handle the stickier material. And asking a patient to cough necessitates more personal protective equipment for the health care professional.

Each center will have to tailor the specimen type it chooses, based on what resources it has available and the setting – whether in a hospital or a drive-through operation, for instance, she said.
 

Rapid testing vs. standard

Panel member Angela M. Caliendo, MD, PhD, of Brown University, Providence, R.I., said the panel preferred rapid polymerase chain reaction tests and standard, laboratory-based PCR tests over a rapid isothermal test.

The panel defined rapid tests as those for which results are available within an hour after a test provider has the specimen in hand. They excluded home tests for this category.

The only rapid isothermal test that had enough data on which to issue a recommendation was the ID NOW test (Abbott Labs), she noted. 

Rapid PCR tests performed just as well as the standard laboratory-based tests, she said, with a high sensitivity of “97% on average and a very high specificity.”

But the rapid isothermal test had an average sensitivity of only about 80%, compared with the lab-based PCR test, Dr. Caliendo said, yielding a substantial number of false-negative results.

Testing centers will have to weigh the considerable advantages of having results in 15 minutes with a rapid isothermal test and being able to educate positive patients about immediate isolation against the potential for false negatives, which could send positive patients home thinking they don’t have the virus – and thus potentially spreading the disease.

And if a clinician gets a negative result with the rapid isothermal test, but has a strong suspicion the person has COVID or lives in an area with high prevalence, a backup test with a rapid PCR or laboratory-based test should be administered.

“You will miss a certain percentage of people using this rapid isothermal test,” she said.

However, Dr. Caliendo said, if the only available option is the isothermal test, “you should definitely use it because it’s certainly better than not testing at all.”

On a positive note, she said, all the varieties of tests have high specificity, so “you’re not going to see a lot of false-positive results.”

The guidelines back in May didn’t make recommendations on rapid tests, she said, because there weren’t enough data in the literature.

Dr. Caliendo noted that most of the available data were for symptomatic patients, but there are some data that show the amount of virus in the respiratory tract is similar for people with and without symptoms. The panel, therefore, expects that the performance of the various assays would be similar whether or not a person had symptoms.
 

Testing the immunocompromised

Dr. Hanson said the original recommendation in May was to do molecular testing for asymptomatic people who were awaiting a transplant or were waiting to start immunosuppressive therapy for cancer or an autoimmune disease. Now the current guidelines “make no recommendation for or against screening” in those cases.

Dr. Hanson added that the panel feels that patients awaiting bone marrow and solid organ transplants should have the testing because of the high risks that will result if patients have contracted the virus.

But for those with cancer or an autoimmune disease, the panel decided to leave it up to each physician to assess individual risk and determine whether the patient should be tested.
 

Home testing

The IDSA guidelines didn’t weigh in on home testing because the products are so new and studies so far have included fewer than 200 patients. But Dr. Caliendo said they clearly perform better earlier in the disease phase – the first 5-7 days – when the amount of the virus is higher.

Dr. Hanson and Dr. Caliendo also fielded a question about what the new virus variant, first discovered in the United Kingdom and now spreading to other countries (including the United States) means for diagnostic testing.

“So far we think with the majority of tests that are [emergency use] authorized, it doesn’t look like this new variant should really affect test performance,” Dr. Hanson said.

The variant has differences in the spike gene, and many of the current tests detect and identify SARS-CoV-2 without the spike gene so they wouldn’t be affected, she added.

Dr. Caliendo agreed: “I think the vast majority of our tests should be in good shape.”

Dr. Hanson and Dr. Caliendo disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Saliva spit tests stack up well against the gold standard for molecular COVID-19 tests – the back-of-the-nose deep swab – without the discomfort and induced coughing or sneezing of the test taker, updated guidelines indicate.

In a press briefing on Jan. 6, the Infectious Diseases Society of America explained the findings of an expert panel that reviewed the literature since the IDSA released its first guidelines in May.

The panel found that saliva tests were especially effective if the test included instructions to cough or clear the throat before spitting into the tube, said panel chair Kimberly E. Hanson, MD, MHS, of University of Utah Health, Salt Lake City.
 

Throat swab alone less effective

Using a throat swab alone was less effective and missed more cases than the other methods, she said.

The IDSA has updated its recommendation: A saliva test or swabs from either the middle or front of the nose front are preferred to a throat swab alone.

A combination of saliva and swabs from the front and middle of the nose and throat together “looked pretty much equivalent” to the gold-standard deep swab, the panel found.

She acknowledged, however, that multiple swabs exacerbate already challenging supply issues.

Saliva samples do come with challenges, Dr. Hanson noted. A laboratory must validate that its systems can handle the stickier material. And asking a patient to cough necessitates more personal protective equipment for the health care professional.

Each center will have to tailor the specimen type it chooses, based on what resources it has available and the setting – whether in a hospital or a drive-through operation, for instance, she said.
 

Rapid testing vs. standard

Panel member Angela M. Caliendo, MD, PhD, of Brown University, Providence, R.I., said the panel preferred rapid polymerase chain reaction tests and standard, laboratory-based PCR tests over a rapid isothermal test.

The panel defined rapid tests as those for which results are available within an hour after a test provider has the specimen in hand. They excluded home tests for this category.

The only rapid isothermal test that had enough data on which to issue a recommendation was the ID NOW test (Abbott Labs), she noted. 

Rapid PCR tests performed just as well as the standard laboratory-based tests, she said, with a high sensitivity of “97% on average and a very high specificity.”

But the rapid isothermal test had an average sensitivity of only about 80%, compared with the lab-based PCR test, Dr. Caliendo said, yielding a substantial number of false-negative results.

Testing centers will have to weigh the considerable advantages of having results in 15 minutes with a rapid isothermal test and being able to educate positive patients about immediate isolation against the potential for false negatives, which could send positive patients home thinking they don’t have the virus – and thus potentially spreading the disease.

And if a clinician gets a negative result with the rapid isothermal test, but has a strong suspicion the person has COVID or lives in an area with high prevalence, a backup test with a rapid PCR or laboratory-based test should be administered.

“You will miss a certain percentage of people using this rapid isothermal test,” she said.

However, Dr. Caliendo said, if the only available option is the isothermal test, “you should definitely use it because it’s certainly better than not testing at all.”

On a positive note, she said, all the varieties of tests have high specificity, so “you’re not going to see a lot of false-positive results.”

The guidelines back in May didn’t make recommendations on rapid tests, she said, because there weren’t enough data in the literature.

Dr. Caliendo noted that most of the available data were for symptomatic patients, but there are some data that show the amount of virus in the respiratory tract is similar for people with and without symptoms. The panel, therefore, expects that the performance of the various assays would be similar whether or not a person had symptoms.
 

Testing the immunocompromised

Dr. Hanson said the original recommendation in May was to do molecular testing for asymptomatic people who were awaiting a transplant or were waiting to start immunosuppressive therapy for cancer or an autoimmune disease. Now the current guidelines “make no recommendation for or against screening” in those cases.

Dr. Hanson added that the panel feels that patients awaiting bone marrow and solid organ transplants should have the testing because of the high risks that will result if patients have contracted the virus.

But for those with cancer or an autoimmune disease, the panel decided to leave it up to each physician to assess individual risk and determine whether the patient should be tested.
 

Home testing

The IDSA guidelines didn’t weigh in on home testing because the products are so new and studies so far have included fewer than 200 patients. But Dr. Caliendo said they clearly perform better earlier in the disease phase – the first 5-7 days – when the amount of the virus is higher.

Dr. Hanson and Dr. Caliendo also fielded a question about what the new virus variant, first discovered in the United Kingdom and now spreading to other countries (including the United States) means for diagnostic testing.

“So far we think with the majority of tests that are [emergency use] authorized, it doesn’t look like this new variant should really affect test performance,” Dr. Hanson said.

The variant has differences in the spike gene, and many of the current tests detect and identify SARS-CoV-2 without the spike gene so they wouldn’t be affected, she added.

Dr. Caliendo agreed: “I think the vast majority of our tests should be in good shape.”

Dr. Hanson and Dr. Caliendo disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Saliva spit tests stack up well against the gold standard for molecular COVID-19 tests – the back-of-the-nose deep swab – without the discomfort and induced coughing or sneezing of the test taker, updated guidelines indicate.

In a press briefing on Jan. 6, the Infectious Diseases Society of America explained the findings of an expert panel that reviewed the literature since the IDSA released its first guidelines in May.

The panel found that saliva tests were especially effective if the test included instructions to cough or clear the throat before spitting into the tube, said panel chair Kimberly E. Hanson, MD, MHS, of University of Utah Health, Salt Lake City.
 

Throat swab alone less effective

Using a throat swab alone was less effective and missed more cases than the other methods, she said.

The IDSA has updated its recommendation: A saliva test or swabs from either the middle or front of the nose front are preferred to a throat swab alone.

A combination of saliva and swabs from the front and middle of the nose and throat together “looked pretty much equivalent” to the gold-standard deep swab, the panel found.

She acknowledged, however, that multiple swabs exacerbate already challenging supply issues.

Saliva samples do come with challenges, Dr. Hanson noted. A laboratory must validate that its systems can handle the stickier material. And asking a patient to cough necessitates more personal protective equipment for the health care professional.

Each center will have to tailor the specimen type it chooses, based on what resources it has available and the setting – whether in a hospital or a drive-through operation, for instance, she said.
 

Rapid testing vs. standard

Panel member Angela M. Caliendo, MD, PhD, of Brown University, Providence, R.I., said the panel preferred rapid polymerase chain reaction tests and standard, laboratory-based PCR tests over a rapid isothermal test.

The panel defined rapid tests as those for which results are available within an hour after a test provider has the specimen in hand. They excluded home tests for this category.

The only rapid isothermal test that had enough data on which to issue a recommendation was the ID NOW test (Abbott Labs), she noted. 

Rapid PCR tests performed just as well as the standard laboratory-based tests, she said, with a high sensitivity of “97% on average and a very high specificity.”

But the rapid isothermal test had an average sensitivity of only about 80%, compared with the lab-based PCR test, Dr. Caliendo said, yielding a substantial number of false-negative results.

Testing centers will have to weigh the considerable advantages of having results in 15 minutes with a rapid isothermal test and being able to educate positive patients about immediate isolation against the potential for false negatives, which could send positive patients home thinking they don’t have the virus – and thus potentially spreading the disease.

And if a clinician gets a negative result with the rapid isothermal test, but has a strong suspicion the person has COVID or lives in an area with high prevalence, a backup test with a rapid PCR or laboratory-based test should be administered.

“You will miss a certain percentage of people using this rapid isothermal test,” she said.

However, Dr. Caliendo said, if the only available option is the isothermal test, “you should definitely use it because it’s certainly better than not testing at all.”

On a positive note, she said, all the varieties of tests have high specificity, so “you’re not going to see a lot of false-positive results.”

The guidelines back in May didn’t make recommendations on rapid tests, she said, because there weren’t enough data in the literature.

Dr. Caliendo noted that most of the available data were for symptomatic patients, but there are some data that show the amount of virus in the respiratory tract is similar for people with and without symptoms. The panel, therefore, expects that the performance of the various assays would be similar whether or not a person had symptoms.
 

Testing the immunocompromised

Dr. Hanson said the original recommendation in May was to do molecular testing for asymptomatic people who were awaiting a transplant or were waiting to start immunosuppressive therapy for cancer or an autoimmune disease. Now the current guidelines “make no recommendation for or against screening” in those cases.

Dr. Hanson added that the panel feels that patients awaiting bone marrow and solid organ transplants should have the testing because of the high risks that will result if patients have contracted the virus.

But for those with cancer or an autoimmune disease, the panel decided to leave it up to each physician to assess individual risk and determine whether the patient should be tested.
 

Home testing

The IDSA guidelines didn’t weigh in on home testing because the products are so new and studies so far have included fewer than 200 patients. But Dr. Caliendo said they clearly perform better earlier in the disease phase – the first 5-7 days – when the amount of the virus is higher.

Dr. Hanson and Dr. Caliendo also fielded a question about what the new virus variant, first discovered in the United Kingdom and now spreading to other countries (including the United States) means for diagnostic testing.

“So far we think with the majority of tests that are [emergency use] authorized, it doesn’t look like this new variant should really affect test performance,” Dr. Hanson said.

The variant has differences in the spike gene, and many of the current tests detect and identify SARS-CoV-2 without the spike gene so they wouldn’t be affected, she added.

Dr. Caliendo agreed: “I think the vast majority of our tests should be in good shape.”

Dr. Hanson and Dr. Caliendo disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Administering convalescent plasma that has high levels of antibodies against SARS-CoV-2 within the first 3 days of symptoms was associated with significantly lower chances of progression to severe COVID-19, new evidence demonstrates.

In a trial of 160 older adults with COVID-19, half of whom were randomly assigned to receive plasma and half to receive placebo infusion, treatment with high-titer plasma lowered the relative risk for severe disease by 48% in an intent-to-treat analysis.

“We now have evidence, in the context of a small but well-designed study, that convalescent plasma with high titers of antibody against SARS-CoV-2 administered in the first 3 days of mild symptoms to infected elderly reduces progression of illness and the rate of severe presentations,” senior author Fernando Polack, MD, said in an interview.

“Not any plasma, not any time,” added Dr. Polack, an infectious disease specialist and scientific director at Fundacion INFANT and professor of pediatrics at the University of Buenos Aires. The key, he said, is to select plasma in the upper 28th percentile of IgG antibody concentrations and to administer therapy prior to disease progression.

The study was published online Jan. 6 in The New England Journal of Medicine.

“It’s a very good study and approaches a different population from the PlasmAr study,” Ventura Simonovich, MD, chief of the clinical pharmacology section, Medical Clinic Service, Hospital Italiano de Buenos Aires, said in an interview. “This is the first published randomized controlled trial that shows real benefit in this [older adult] population, the most vulnerable in this disease,” he said.

Dr. Simonovich, who was not affiliated with the current study, was lead author of the PlasmAr trial, which was published in The New England Journal of Medicine Nov. 24, 2020. In that trial, the researchers evaluated adults aged 18 years and older and found no significant benefit with convalescent plasma treatment over placebo for patients with COVID-19 and severe pneumonia.

“We know antibodies work best when given early and in high dose. This is one of the rare reports that validates it in the outpatient setting,” David Sullivan, MD, professor of molecular biology and immunology at Johns Hopkins Bloomberg School of Public Health, Baltimore, said in an interview when asked to comment.

Dr. Sullivan pointed out that most previous studies on convalescent plasma focused on patients with COVID-19 who had severe cases late in the disease course.

Regarding the current study, he said, “The striking thing is treating people within 3 days of illness.”

A more cautious interpretation may be warranted, one expert said. “The study demonstrates the benefit of early intervention. There was a dose-dependent effect, with higher titers providing a greater benefit,” Manoj Menon, MD, MPH, a hematologist and oncologist at the University of Washington, Seattle, said in an interview.

“Taken together, the findings have biologic plausibility and produce more data on the role of convalescent plasma to a relevant age cohort,” he added.

However, Dr. Menon said: “Given the limited sample size, I do not think this study, although well conducted, definitively addresses the role of convalescent plasma for COVID-19. But it does merit additional study.”

A search for clear answers

Treatments that target the early stages of COVID-19 “remain elusive. Few strategies provide benefit, several have failed, and others are being evaluated,” the researchers noted. “In hospitalized patients with COVID-19, the infusion of convalescent plasma against SARS-CoV-2 late in the course of illness has not shown clear benefits and, consequently, the most appropriate antibody concentrations for effective treatment are unclear.”

To learn more, Dr. Polack and colleagues included patients with PCR-confirmed COVID-19 who were aged 75 years or older, regardless of comorbidities. They also included patients aged 65-74 years who had at least one underlying condition. Participants were enrolled at clinical sites or geriatric units in Argentina. The mean age was 77 years, and 62% were women.

In an intent-to-treat analysis, the primary outcome – severe respiratory disease – occurred in 16% of the plasma recipients, vs. 31% of the group that received placebo. The relative risk was 0.52 (95% confidence interval, 0.29-0.94; P = .03).

The number needed to treat to avoid a severe respiratory disease episode was 7 (95% CI, 4-50).

Life-threatening respiratory disease, a secondary outcome, occurred in four people in the plasma group, compared with 10 in the placebo group. Two patients in the treatment group and four patients in the placebo group died.

The researchers also ran a modified intent-to-treat analysis that excluded six participants who experienced severe respiratory disease prior to receiving plasma or placebo. In this analysis, efficacy of plasma therapy increased to 60%.

“Again, this finding suggests that early intervention is critical for efficacy,” the investigators noted.

The investigators, who are based in Argentina, defined their primary endpoint as a respiratory rate of 30 or more breaths per minute and/or an oxygen saturation of less than 93% while breathing ambient air.

Dr. Sullivan pointed out that this is equivalent to the threshold commonly used for hospitalizing people with COVID-19 in the United States. “So it’s equivalent to avoiding hospitalizations. The take-home is high-titer plasma prevents respiratory distress, which equals hospitalization for us.”

Dr. Sullivan is conducting similar research in the United States regarding the use of plasma for treatment or prevention. He and colleagues are evaluating adults aged 18-90 years, “not just the ones at highest risk for going to the hospital,” he said. Enrollment is ongoing.
 

An inexpensive therapy with global potential?

“Although our trial lacked the statistical power to discern long-term outcomes, the convalescent plasma group appeared to have better outcomes than the placebo group with respect to all secondary endpoints,” the researchers wrote. “Our findings underscore the need to return to the classic approach of treating acute viral infections early, and they define IgG targets that facilitate donor selection.”

Dr. Polack said, “This is an inexpensive solution to mitigate the burden of severe illness in the population most vulnerable to the virus: the elderly. And it has the attraction of being applicable not only in industrialized countries but in many areas of the developing world.”

Convalescent plasma “is a potentially inexpensive alternative to monoclonal antibodies,” the researchers added. Furthermore, “early infusions of convalescent plasma can provide a bridge to recovery for at-risk patients until vaccines become widely available.”

Dr. Polack said the study findings did not surprise him. “We always thought that, as it has been the case in the past with many therapeutic strategies against respiratory and other viral infections, the earlier you treat, the better.

“We just hoped that within 72 hours of symptoms we would be treating early enough – remember that there is a 4- to 5-day incubation period that the virus leverages before the first symptom – and with enough antibody,” he added.

“We are glad it worked,” he said.

The study was supported by the Bill and Melinda Gates Foundation and by the Fundación INFANT Pandemic Fund. Dr. Polack, Dr. Simonovich, and Dr. Sullivan have disclosed various financial relationships industry.

A version of this article first appeared on Medscape.com.

Administering convalescent plasma that has high levels of antibodies against SARS-CoV-2 within the first 3 days of symptoms was associated with significantly lower chances of progression to severe COVID-19, new evidence demonstrates.

In a trial of 160 older adults with COVID-19, half of whom were randomly assigned to receive plasma and half to receive placebo infusion, treatment with high-titer plasma lowered the relative risk for severe disease by 48% in an intent-to-treat analysis.

“We now have evidence, in the context of a small but well-designed study, that convalescent plasma with high titers of antibody against SARS-CoV-2 administered in the first 3 days of mild symptoms to infected elderly reduces progression of illness and the rate of severe presentations,” senior author Fernando Polack, MD, said in an interview.

“Not any plasma, not any time,” added Dr. Polack, an infectious disease specialist and scientific director at Fundacion INFANT and professor of pediatrics at the University of Buenos Aires. The key, he said, is to select plasma in the upper 28th percentile of IgG antibody concentrations and to administer therapy prior to disease progression.

The study was published online Jan. 6 in The New England Journal of Medicine.

“It’s a very good study and approaches a different population from the PlasmAr study,” Ventura Simonovich, MD, chief of the clinical pharmacology section, Medical Clinic Service, Hospital Italiano de Buenos Aires, said in an interview. “This is the first published randomized controlled trial that shows real benefit in this [older adult] population, the most vulnerable in this disease,” he said.

Dr. Simonovich, who was not affiliated with the current study, was lead author of the PlasmAr trial, which was published in The New England Journal of Medicine Nov. 24, 2020. In that trial, the researchers evaluated adults aged 18 years and older and found no significant benefit with convalescent plasma treatment over placebo for patients with COVID-19 and severe pneumonia.

“We know antibodies work best when given early and in high dose. This is one of the rare reports that validates it in the outpatient setting,” David Sullivan, MD, professor of molecular biology and immunology at Johns Hopkins Bloomberg School of Public Health, Baltimore, said in an interview when asked to comment.

Dr. Sullivan pointed out that most previous studies on convalescent plasma focused on patients with COVID-19 who had severe cases late in the disease course.

Regarding the current study, he said, “The striking thing is treating people within 3 days of illness.”

A more cautious interpretation may be warranted, one expert said. “The study demonstrates the benefit of early intervention. There was a dose-dependent effect, with higher titers providing a greater benefit,” Manoj Menon, MD, MPH, a hematologist and oncologist at the University of Washington, Seattle, said in an interview.

“Taken together, the findings have biologic plausibility and produce more data on the role of convalescent plasma to a relevant age cohort,” he added.

However, Dr. Menon said: “Given the limited sample size, I do not think this study, although well conducted, definitively addresses the role of convalescent plasma for COVID-19. But it does merit additional study.”

A search for clear answers

Treatments that target the early stages of COVID-19 “remain elusive. Few strategies provide benefit, several have failed, and others are being evaluated,” the researchers noted. “In hospitalized patients with COVID-19, the infusion of convalescent plasma against SARS-CoV-2 late in the course of illness has not shown clear benefits and, consequently, the most appropriate antibody concentrations for effective treatment are unclear.”

To learn more, Dr. Polack and colleagues included patients with PCR-confirmed COVID-19 who were aged 75 years or older, regardless of comorbidities. They also included patients aged 65-74 years who had at least one underlying condition. Participants were enrolled at clinical sites or geriatric units in Argentina. The mean age was 77 years, and 62% were women.

In an intent-to-treat analysis, the primary outcome – severe respiratory disease – occurred in 16% of the plasma recipients, vs. 31% of the group that received placebo. The relative risk was 0.52 (95% confidence interval, 0.29-0.94; P = .03).

The number needed to treat to avoid a severe respiratory disease episode was 7 (95% CI, 4-50).

Life-threatening respiratory disease, a secondary outcome, occurred in four people in the plasma group, compared with 10 in the placebo group. Two patients in the treatment group and four patients in the placebo group died.

The researchers also ran a modified intent-to-treat analysis that excluded six participants who experienced severe respiratory disease prior to receiving plasma or placebo. In this analysis, efficacy of plasma therapy increased to 60%.

“Again, this finding suggests that early intervention is critical for efficacy,” the investigators noted.

The investigators, who are based in Argentina, defined their primary endpoint as a respiratory rate of 30 or more breaths per minute and/or an oxygen saturation of less than 93% while breathing ambient air.

Dr. Sullivan pointed out that this is equivalent to the threshold commonly used for hospitalizing people with COVID-19 in the United States. “So it’s equivalent to avoiding hospitalizations. The take-home is high-titer plasma prevents respiratory distress, which equals hospitalization for us.”

Dr. Sullivan is conducting similar research in the United States regarding the use of plasma for treatment or prevention. He and colleagues are evaluating adults aged 18-90 years, “not just the ones at highest risk for going to the hospital,” he said. Enrollment is ongoing.
 

An inexpensive therapy with global potential?

“Although our trial lacked the statistical power to discern long-term outcomes, the convalescent plasma group appeared to have better outcomes than the placebo group with respect to all secondary endpoints,” the researchers wrote. “Our findings underscore the need to return to the classic approach of treating acute viral infections early, and they define IgG targets that facilitate donor selection.”

Dr. Polack said, “This is an inexpensive solution to mitigate the burden of severe illness in the population most vulnerable to the virus: the elderly. And it has the attraction of being applicable not only in industrialized countries but in many areas of the developing world.”

Convalescent plasma “is a potentially inexpensive alternative to monoclonal antibodies,” the researchers added. Furthermore, “early infusions of convalescent plasma can provide a bridge to recovery for at-risk patients until vaccines become widely available.”

Dr. Polack said the study findings did not surprise him. “We always thought that, as it has been the case in the past with many therapeutic strategies against respiratory and other viral infections, the earlier you treat, the better.

“We just hoped that within 72 hours of symptoms we would be treating early enough – remember that there is a 4- to 5-day incubation period that the virus leverages before the first symptom – and with enough antibody,” he added.

“We are glad it worked,” he said.

The study was supported by the Bill and Melinda Gates Foundation and by the Fundación INFANT Pandemic Fund. Dr. Polack, Dr. Simonovich, and Dr. Sullivan have disclosed various financial relationships industry.

A version of this article first appeared on Medscape.com.

Administering convalescent plasma that has high levels of antibodies against SARS-CoV-2 within the first 3 days of symptoms was associated with significantly lower chances of progression to severe COVID-19, new evidence demonstrates.

In a trial of 160 older adults with COVID-19, half of whom were randomly assigned to receive plasma and half to receive placebo infusion, treatment with high-titer plasma lowered the relative risk for severe disease by 48% in an intent-to-treat analysis.

“We now have evidence, in the context of a small but well-designed study, that convalescent plasma with high titers of antibody against SARS-CoV-2 administered in the first 3 days of mild symptoms to infected elderly reduces progression of illness and the rate of severe presentations,” senior author Fernando Polack, MD, said in an interview.

“Not any plasma, not any time,” added Dr. Polack, an infectious disease specialist and scientific director at Fundacion INFANT and professor of pediatrics at the University of Buenos Aires. The key, he said, is to select plasma in the upper 28th percentile of IgG antibody concentrations and to administer therapy prior to disease progression.

The study was published online Jan. 6 in The New England Journal of Medicine.

“It’s a very good study and approaches a different population from the PlasmAr study,” Ventura Simonovich, MD, chief of the clinical pharmacology section, Medical Clinic Service, Hospital Italiano de Buenos Aires, said in an interview. “This is the first published randomized controlled trial that shows real benefit in this [older adult] population, the most vulnerable in this disease,” he said.

Dr. Simonovich, who was not affiliated with the current study, was lead author of the PlasmAr trial, which was published in The New England Journal of Medicine Nov. 24, 2020. In that trial, the researchers evaluated adults aged 18 years and older and found no significant benefit with convalescent plasma treatment over placebo for patients with COVID-19 and severe pneumonia.

“We know antibodies work best when given early and in high dose. This is one of the rare reports that validates it in the outpatient setting,” David Sullivan, MD, professor of molecular biology and immunology at Johns Hopkins Bloomberg School of Public Health, Baltimore, said in an interview when asked to comment.

Dr. Sullivan pointed out that most previous studies on convalescent plasma focused on patients with COVID-19 who had severe cases late in the disease course.

Regarding the current study, he said, “The striking thing is treating people within 3 days of illness.”

A more cautious interpretation may be warranted, one expert said. “The study demonstrates the benefit of early intervention. There was a dose-dependent effect, with higher titers providing a greater benefit,” Manoj Menon, MD, MPH, a hematologist and oncologist at the University of Washington, Seattle, said in an interview.

“Taken together, the findings have biologic plausibility and produce more data on the role of convalescent plasma to a relevant age cohort,” he added.

However, Dr. Menon said: “Given the limited sample size, I do not think this study, although well conducted, definitively addresses the role of convalescent plasma for COVID-19. But it does merit additional study.”

A search for clear answers

Treatments that target the early stages of COVID-19 “remain elusive. Few strategies provide benefit, several have failed, and others are being evaluated,” the researchers noted. “In hospitalized patients with COVID-19, the infusion of convalescent plasma against SARS-CoV-2 late in the course of illness has not shown clear benefits and, consequently, the most appropriate antibody concentrations for effective treatment are unclear.”

To learn more, Dr. Polack and colleagues included patients with PCR-confirmed COVID-19 who were aged 75 years or older, regardless of comorbidities. They also included patients aged 65-74 years who had at least one underlying condition. Participants were enrolled at clinical sites or geriatric units in Argentina. The mean age was 77 years, and 62% were women.

In an intent-to-treat analysis, the primary outcome – severe respiratory disease – occurred in 16% of the plasma recipients, vs. 31% of the group that received placebo. The relative risk was 0.52 (95% confidence interval, 0.29-0.94; P = .03).

The number needed to treat to avoid a severe respiratory disease episode was 7 (95% CI, 4-50).

Life-threatening respiratory disease, a secondary outcome, occurred in four people in the plasma group, compared with 10 in the placebo group. Two patients in the treatment group and four patients in the placebo group died.

The researchers also ran a modified intent-to-treat analysis that excluded six participants who experienced severe respiratory disease prior to receiving plasma or placebo. In this analysis, efficacy of plasma therapy increased to 60%.

“Again, this finding suggests that early intervention is critical for efficacy,” the investigators noted.

The investigators, who are based in Argentina, defined their primary endpoint as a respiratory rate of 30 or more breaths per minute and/or an oxygen saturation of less than 93% while breathing ambient air.

Dr. Sullivan pointed out that this is equivalent to the threshold commonly used for hospitalizing people with COVID-19 in the United States. “So it’s equivalent to avoiding hospitalizations. The take-home is high-titer plasma prevents respiratory distress, which equals hospitalization for us.”

Dr. Sullivan is conducting similar research in the United States regarding the use of plasma for treatment or prevention. He and colleagues are evaluating adults aged 18-90 years, “not just the ones at highest risk for going to the hospital,” he said. Enrollment is ongoing.
 

An inexpensive therapy with global potential?

“Although our trial lacked the statistical power to discern long-term outcomes, the convalescent plasma group appeared to have better outcomes than the placebo group with respect to all secondary endpoints,” the researchers wrote. “Our findings underscore the need to return to the classic approach of treating acute viral infections early, and they define IgG targets that facilitate donor selection.”

Dr. Polack said, “This is an inexpensive solution to mitigate the burden of severe illness in the population most vulnerable to the virus: the elderly. And it has the attraction of being applicable not only in industrialized countries but in many areas of the developing world.”

Convalescent plasma “is a potentially inexpensive alternative to monoclonal antibodies,” the researchers added. Furthermore, “early infusions of convalescent plasma can provide a bridge to recovery for at-risk patients until vaccines become widely available.”

Dr. Polack said the study findings did not surprise him. “We always thought that, as it has been the case in the past with many therapeutic strategies against respiratory and other viral infections, the earlier you treat, the better.

“We just hoped that within 72 hours of symptoms we would be treating early enough – remember that there is a 4- to 5-day incubation period that the virus leverages before the first symptom – and with enough antibody,” he added.

“We are glad it worked,” he said.

The study was supported by the Bill and Melinda Gates Foundation and by the Fundación INFANT Pandemic Fund. Dr. Polack, Dr. Simonovich, and Dr. Sullivan have disclosed various financial relationships industry.

A version of this article first appeared on Medscape.com.

A new clinical practice update from the American Gastroenterological Association seeks to provide gastroenterologists with practical and evidence-based advice for management of colonic diverticulitis.

For example, clinicians should consider lower endoscopy and CT scans of the abdomen and pelvis with oral and intravenous contrast to rule out chronic diverticular inflammation, diverticular stricture or fistula, ischemic colitis, constipation, and inflammatory bowel disease, Anne F. Peery, MD, MSCR, of the University of North Carolina, Chapel Hill, and associates wrote in Gastroenterology.

“In our practice, patients are reassured to know that ongoing symptoms are common and often attributable to visceral hypersensitivity,” they wrote. “This conversation is particularly important after a negative workup. If needed, ongoing abdominal pain can be treated with a low to modest dose of a tricyclic antidepressant.”

The update from the AGA includes 13 other recommendations, with noteworthy advice to use antibiotics selectively, rather than routinely, in cases of acute uncomplicated diverticulitis in immunocompetent patients. In a recent large meta-analysis, antibiotics did not shorten symptom duration or reduce rates of hospitalization, complications, or surgery in this setting. The clinical practice update advises using antibiotics if patients are frail or have comorbidities, vomiting or refractory symptoms, a C-reactive protein level above 140 mg/L, a baseline white blood cell count above 15 × 10⁹ cells/L, or fluid collection or a longer segment of inflammation on CT scan. Antibiotics also are strongly advised for immunocompromised patients, who are at greater risk for complications and severe diverticulitis. Because of this risk, clinicians should have “a low threshold” for cross-sectional imaging, antibiotic treatment, and consultation with a colorectal surgeon, according to the update.

The authors recommend CT if patients have severe symptoms or have not previously been diagnosed with diverticulitis based on imaging. Clinicians also should consider imaging if patients have had multiple recurrences, are not responding to treatment, are immunocompromised, or are considering prophylactic surgery (in which case imaging is used to pinpoint areas of disease).

Colonoscopy is advised after episodes of complicated diverticulitis or after a first episode of uncomplicated diverticulitis if no high-quality colonoscopy has been performed in the past year. This colonoscopy is advised to rule out malignancy, which can be misdiagnosed as diverticulitis, and because diverticulitis (particularly complicated diverticulitis) has been associated with colon cancer in some studies, the update notes. Unless patients have “alarm symptoms” – that is, a change in stool caliber, iron deficiency anemia, bloody stools, weight loss, or abdominal pain – colonoscopy should be delayed until 6-8 weeks after the diverticulitis episode or until the acute symptoms resolve, whichever occurs later.

The decision to discuss elective segmental resection should be based on disease severity, not the prior number of episodes. Although elective surgery for diverticulitis has become increasingly common, patients should be aware that surgery often does not improve chronic gastrointestinal symptoms, such as abdominal pain, and that surgery reduces but does not eliminate the risk for recurrence. The authors recommended against surgery to prevent complicated diverticulitis in immunocompetent patients with a history of uncomplicated episodes. “In this population, complicated diverticulitis is most often the first presentation of diverticulitis and is less likely with recurrences,” the update states. For acute complicated diverticulitis that has been effectively managed without surgery, patients are at heightened risk for recurrence, but “a growing literature suggest[s] a more conservative and personalized approach” rather than the routine use of interval elective resection, the authors noted. For all patients, counseling regarding surgery should incorporate thoughtful discussions of immune status, values and preferences, and operative risks versus benefits, including effects on quality of life.

Dr. Peery and another author were supported by grants from the National Institutes of Health. The authors reported having no conflicts of interest.

SOURCE: Peery AF et al. Gastroenterology. 2020 Dec 3. doi: 10.1053/j.gastro.2020.09.059.

This article was updated Feb. 10, 2021.

A new clinical practice update from the American Gastroenterological Association seeks to provide gastroenterologists with practical and evidence-based advice for management of colonic diverticulitis.

For example, clinicians should consider lower endoscopy and CT scans of the abdomen and pelvis with oral and intravenous contrast to rule out chronic diverticular inflammation, diverticular stricture or fistula, ischemic colitis, constipation, and inflammatory bowel disease, Anne F. Peery, MD, MSCR, of the University of North Carolina, Chapel Hill, and associates wrote in Gastroenterology.

“In our practice, patients are reassured to know that ongoing symptoms are common and often attributable to visceral hypersensitivity,” they wrote. “This conversation is particularly important after a negative workup. If needed, ongoing abdominal pain can be treated with a low to modest dose of a tricyclic antidepressant.”

The update from the AGA includes 13 other recommendations, with noteworthy advice to use antibiotics selectively, rather than routinely, in cases of acute uncomplicated diverticulitis in immunocompetent patients. In a recent large meta-analysis, antibiotics did not shorten symptom duration or reduce rates of hospitalization, complications, or surgery in this setting. The clinical practice update advises using antibiotics if patients are frail or have comorbidities, vomiting or refractory symptoms, a C-reactive protein level above 140 mg/L, a baseline white blood cell count above 15 × 10⁹ cells/L, or fluid collection or a longer segment of inflammation on CT scan. Antibiotics also are strongly advised for immunocompromised patients, who are at greater risk for complications and severe diverticulitis. Because of this risk, clinicians should have “a low threshold” for cross-sectional imaging, antibiotic treatment, and consultation with a colorectal surgeon, according to the update.

The authors recommend CT if patients have severe symptoms or have not previously been diagnosed with diverticulitis based on imaging. Clinicians also should consider imaging if patients have had multiple recurrences, are not responding to treatment, are immunocompromised, or are considering prophylactic surgery (in which case imaging is used to pinpoint areas of disease).

Colonoscopy is advised after episodes of complicated diverticulitis or after a first episode of uncomplicated diverticulitis if no high-quality colonoscopy has been performed in the past year. This colonoscopy is advised to rule out malignancy, which can be misdiagnosed as diverticulitis, and because diverticulitis (particularly complicated diverticulitis) has been associated with colon cancer in some studies, the update notes. Unless patients have “alarm symptoms” – that is, a change in stool caliber, iron deficiency anemia, bloody stools, weight loss, or abdominal pain – colonoscopy should be delayed until 6-8 weeks after the diverticulitis episode or until the acute symptoms resolve, whichever occurs later.

The decision to discuss elective segmental resection should be based on disease severity, not the prior number of episodes. Although elective surgery for diverticulitis has become increasingly common, patients should be aware that surgery often does not improve chronic gastrointestinal symptoms, such as abdominal pain, and that surgery reduces but does not eliminate the risk for recurrence. The authors recommended against surgery to prevent complicated diverticulitis in immunocompetent patients with a history of uncomplicated episodes. “In this population, complicated diverticulitis is most often the first presentation of diverticulitis and is less likely with recurrences,” the update states. For acute complicated diverticulitis that has been effectively managed without surgery, patients are at heightened risk for recurrence, but “a growing literature suggest[s] a more conservative and personalized approach” rather than the routine use of interval elective resection, the authors noted. For all patients, counseling regarding surgery should incorporate thoughtful discussions of immune status, values and preferences, and operative risks versus benefits, including effects on quality of life.

Dr. Peery and another author were supported by grants from the National Institutes of Health. The authors reported having no conflicts of interest.

SOURCE: Peery AF et al. Gastroenterology. 2020 Dec 3. doi: 10.1053/j.gastro.2020.09.059.

This article was updated Feb. 10, 2021.

A new clinical practice update from the American Gastroenterological Association seeks to provide gastroenterologists with practical and evidence-based advice for management of colonic diverticulitis.

For example, clinicians should consider lower endoscopy and CT scans of the abdomen and pelvis with oral and intravenous contrast to rule out chronic diverticular inflammation, diverticular stricture or fistula, ischemic colitis, constipation, and inflammatory bowel disease, Anne F. Peery, MD, MSCR, of the University of North Carolina, Chapel Hill, and associates wrote in Gastroenterology.

“In our practice, patients are reassured to know that ongoing symptoms are common and often attributable to visceral hypersensitivity,” they wrote. “This conversation is particularly important after a negative workup. If needed, ongoing abdominal pain can be treated with a low to modest dose of a tricyclic antidepressant.”

The update from the AGA includes 13 other recommendations, with noteworthy advice to use antibiotics selectively, rather than routinely, in cases of acute uncomplicated diverticulitis in immunocompetent patients. In a recent large meta-analysis, antibiotics did not shorten symptom duration or reduce rates of hospitalization, complications, or surgery in this setting. The clinical practice update advises using antibiotics if patients are frail or have comorbidities, vomiting or refractory symptoms, a C-reactive protein level above 140 mg/L, a baseline white blood cell count above 15 × 10⁹ cells/L, or fluid collection or a longer segment of inflammation on CT scan. Antibiotics also are strongly advised for immunocompromised patients, who are at greater risk for complications and severe diverticulitis. Because of this risk, clinicians should have “a low threshold” for cross-sectional imaging, antibiotic treatment, and consultation with a colorectal surgeon, according to the update.

The authors recommend CT if patients have severe symptoms or have not previously been diagnosed with diverticulitis based on imaging. Clinicians also should consider imaging if patients have had multiple recurrences, are not responding to treatment, are immunocompromised, or are considering prophylactic surgery (in which case imaging is used to pinpoint areas of disease).

Colonoscopy is advised after episodes of complicated diverticulitis or after a first episode of uncomplicated diverticulitis if no high-quality colonoscopy has been performed in the past year. This colonoscopy is advised to rule out malignancy, which can be misdiagnosed as diverticulitis, and because diverticulitis (particularly complicated diverticulitis) has been associated with colon cancer in some studies, the update notes. Unless patients have “alarm symptoms” – that is, a change in stool caliber, iron deficiency anemia, bloody stools, weight loss, or abdominal pain – colonoscopy should be delayed until 6-8 weeks after the diverticulitis episode or until the acute symptoms resolve, whichever occurs later.

The decision to discuss elective segmental resection should be based on disease severity, not the prior number of episodes. Although elective surgery for diverticulitis has become increasingly common, patients should be aware that surgery often does not improve chronic gastrointestinal symptoms, such as abdominal pain, and that surgery reduces but does not eliminate the risk for recurrence. The authors recommended against surgery to prevent complicated diverticulitis in immunocompetent patients with a history of uncomplicated episodes. “In this population, complicated diverticulitis is most often the first presentation of diverticulitis and is less likely with recurrences,” the update states. For acute complicated diverticulitis that has been effectively managed without surgery, patients are at heightened risk for recurrence, but “a growing literature suggest[s] a more conservative and personalized approach” rather than the routine use of interval elective resection, the authors noted. For all patients, counseling regarding surgery should incorporate thoughtful discussions of immune status, values and preferences, and operative risks versus benefits, including effects on quality of life.

Dr. Peery and another author were supported by grants from the National Institutes of Health. The authors reported having no conflicts of interest.

SOURCE: Peery AF et al. Gastroenterology. 2020 Dec 3. doi: 10.1053/j.gastro.2020.09.059.

This article was updated Feb. 10, 2021.

The Food and Drug Administration has issued a safety communication about the potential for false results from a rapid COVID-19 test from Curative, which is being used in Los Angeles and other large metropolitan areas in the United States.

The real-time reverse transcription polymerase chain reaction (PCR) test was developed by Menlo Park, Calif.–based health care start-up Curative. Results are analyzed by the company’s clinical lab, KorvaLabs. The test, which is authorized for prescription use only, received emergency-use authorization from the FDA on April 16, 2020. By Nov. 9, the company had processed 6 million test results, according to the company.

The FDA alert cautions that false negative results from any COVID-19 test can lead to delays in or the lack of supportive treatment and increase the risk for viral spread.

To mitigate the risk for false negatives, the agency advises clinicians to perform the Curative test as described in the product’s Fact Sheet for Healthcare Providers. This includes limiting its use to people who have had COVID-19 symptoms for 14 days or less. “Consider retesting your patients using a different test if you suspect an inaccurate result was given recently by the Curative SARS-Cov-2 test,” the FDA alert stated. “If testing was performed more than 2 weeks ago, and there is no reason to suspect current SARS-CoV-2 infection, it is not necessary to retest.”

The alert also notes that a negative result from the Curative PCR test “does not rule out COVID-19 and should not be used as the sole basis for treatment or patient management decisions. A negative result does not exclude the possibility of COVID-19.”

According to a press release issued by Curative on Oct. 7, its PCR test is being used by the Department of Defense, as well as the states of Alaska, California, Colorado, Delaware, Florida, Georgia (Atlanta and Savannah), Illinois (Chicago), Louisiana, Texas, and Wyoming. The company also operates Clinical Laboratory Improvement Amendments–certified laboratories in San Dimas, Calif.; Washington, D.C.; and Pflugerville, Tex.

A version of this article first appeared on Medscape.com.

The Food and Drug Administration has issued a safety communication about the potential for false results from a rapid COVID-19 test from Curative, which is being used in Los Angeles and other large metropolitan areas in the United States.

The real-time reverse transcription polymerase chain reaction (PCR) test was developed by Menlo Park, Calif.–based health care start-up Curative. Results are analyzed by the company’s clinical lab, KorvaLabs. The test, which is authorized for prescription use only, received emergency-use authorization from the FDA on April 16, 2020. By Nov. 9, the company had processed 6 million test results, according to the company.

The FDA alert cautions that false negative results from any COVID-19 test can lead to delays in or the lack of supportive treatment and increase the risk for viral spread.

To mitigate the risk for false negatives, the agency advises clinicians to perform the Curative test as described in the product’s Fact Sheet for Healthcare Providers. This includes limiting its use to people who have had COVID-19 symptoms for 14 days or less. “Consider retesting your patients using a different test if you suspect an inaccurate result was given recently by the Curative SARS-Cov-2 test,” the FDA alert stated. “If testing was performed more than 2 weeks ago, and there is no reason to suspect current SARS-CoV-2 infection, it is not necessary to retest.”

The alert also notes that a negative result from the Curative PCR test “does not rule out COVID-19 and should not be used as the sole basis for treatment or patient management decisions. A negative result does not exclude the possibility of COVID-19.”

According to a press release issued by Curative on Oct. 7, its PCR test is being used by the Department of Defense, as well as the states of Alaska, California, Colorado, Delaware, Florida, Georgia (Atlanta and Savannah), Illinois (Chicago), Louisiana, Texas, and Wyoming. The company also operates Clinical Laboratory Improvement Amendments–certified laboratories in San Dimas, Calif.; Washington, D.C.; and Pflugerville, Tex.

A version of this article first appeared on Medscape.com.

The Food and Drug Administration has issued a safety communication about the potential for false results from a rapid COVID-19 test from Curative, which is being used in Los Angeles and other large metropolitan areas in the United States.

The real-time reverse transcription polymerase chain reaction (PCR) test was developed by Menlo Park, Calif.–based health care start-up Curative. Results are analyzed by the company’s clinical lab, KorvaLabs. The test, which is authorized for prescription use only, received emergency-use authorization from the FDA on April 16, 2020. By Nov. 9, the company had processed 6 million test results, according to the company.

The FDA alert cautions that false negative results from any COVID-19 test can lead to delays in or the lack of supportive treatment and increase the risk for viral spread.

To mitigate the risk for false negatives, the agency advises clinicians to perform the Curative test as described in the product’s Fact Sheet for Healthcare Providers. This includes limiting its use to people who have had COVID-19 symptoms for 14 days or less. “Consider retesting your patients using a different test if you suspect an inaccurate result was given recently by the Curative SARS-Cov-2 test,” the FDA alert stated. “If testing was performed more than 2 weeks ago, and there is no reason to suspect current SARS-CoV-2 infection, it is not necessary to retest.”

The alert also notes that a negative result from the Curative PCR test “does not rule out COVID-19 and should not be used as the sole basis for treatment or patient management decisions. A negative result does not exclude the possibility of COVID-19.”

According to a press release issued by Curative on Oct. 7, its PCR test is being used by the Department of Defense, as well as the states of Alaska, California, Colorado, Delaware, Florida, Georgia (Atlanta and Savannah), Illinois (Chicago), Louisiana, Texas, and Wyoming. The company also operates Clinical Laboratory Improvement Amendments–certified laboratories in San Dimas, Calif.; Washington, D.C.; and Pflugerville, Tex.

A version of this article first appeared on Medscape.com.