User login
2019 ID update for dermatologists: Ticks are the “ride of choice” for arthropods
ORLANDO – New tricks from ticks, near-zero Zika, and the perils of personal grooming: Dermatologists have a lot to think about along the infectious disease spectrum in 2019, according to Justin Finch, MD, speaking at the Orlando Dermatology Aesthetic and Clinical Conference.
Anaphylaxis from alpha-gal syndrome is on the rise, caused in part by the geographic spread of the Lone Star tick. Beginning in 2006, isolated cases of an anaphylactic reaction to cetuximab, the epidermal growth factor receptor antagonist used to treat certain cancers, began to be seen in a curious geographic distribution. “The anaphylaxis cases were restricted to the southeastern United States, the home of the Lone Star tick,” said Dr. Finch, of the department of dermatology at the University of Connecticut, Farmington.
With some detective work, physicians and epidemiologists eventually determined that patients were reacting to an oligosaccharide called galactose-alpha–1,3-galactose (alpha-gal) found in cetuximab. This protein is also found in the meat of nonprimate mammals; individuals in the southeastern United States, where the Lone Star tick is endemic, had been sensitized via exposure to alpha-gal from Lone Star tick bites.
“Alpha-gal syndrome is on the rise,” said Dr. Finch, driven by the increased spread of this tick. Individuals who are sensitized develop delayed anaphylaxis 2-7 hours after ingesting red meat such as beef, pork, or lamb. “Ask about it,” said Dr. Finch, in patients who develop urticaria, dyspnea, angioedema, or hypotension without a clear offender. Because of the delay between allergen ingestion and anaphylaxis, it can be hard to connect the dots.
A number of drugs other than cetuximab contain alpha-gal, so patients must also be told to avoid these agents, said Dr. Finch, who noted that alpha-gal syndrome isn’t the only emerging culprit for tick-borne diseases. “The tick is the ride of choice for arthropod-borne diseases in the U.S.,” he added. “Year after year, tick-borne diseases top mosquito-borne diseases in the U.S.” Zika’s explosion in 2016 made that year the exception to the rule.
Now, Zika virus may be on the wane – the number of case reports have plummeted both in the United States and in Central and South America this past year – but it hasn’t completely gone away. “It looks like it fell off all the maps,” but the virus is still present at low levels, he said.
When Zika virus is symptomatic, there’s often a nonspecific maculopapular rash. Critically, Dr. Finch said, “women with a rash are four times as likely to have adverse congenital outcomes. This is the important point for us to take home as dermatologists. ... It’s really important to have a high index of suspicion and to screen these women as they are coming into our clinic.”
Turning back to ticks, Lyme disease continues to be a problem in endemic areas in the Northeast, the mid-Atlantic region, and the Midwest, said Dr. Finch, so it’s a perennial on the differential diagnosis for dermatologists.
An Asian tick new to North America was seen for the first time in New Jersey in the summer of 2017. The Asian longhorned tick carries a phlebovirus that causes severe fever with thrombocytopenia syndrome, a disease with a 15% fatality rate. The reservoir host of this virus in Asia isn’t known, said Dr. Finch, adding that no cases of the virus have yet been seen in the United States. As of November 2018, according to the Centers for Disease Control and Prevention, the tick had been found in nine states (Arkansas, Connecticut, Maryland, North Carolina, New Jersey, New York, Pennsylvania, Virginia, and West Virginia).
“What’s not on the rise? Pubic lice. We are destroying their natural habitat!” said Dr. Finch, citing surveys about personal grooming that show that more than 90% of women remove at least some of their pubic hair. Most college campuses are currently reporting essentially no cases of pubic lice, he noted.
However, the same personal grooming practices may be contributing to increases in molluscum contagiosum, herpes simplex virus, some strains of human papillomavirus, and cutaneous Streptococcus pyogenes infections, he said.
Another STI has had a resurgence in geographic pockets around the nation and among specific populations, said Dr. Finch. Syphilis is on the rise among gay and bisexual men and African Americans. Known as the “great imitator,” syphilis should be on the differential for dermatologists when the clinical picture isn’t quite adding up. “Think of this, and screen with an RPR [rapid plasma reagin],” he said.
Finally, an old enemy is back: A total of 11 measles outbreaks were reported in 2018. “We need to know about measles because of the complications,” said Dr. Finch. Even years later, such dire sequelae as subacute sclerosing panencephalitis can crop up, he added.
After a 2-week incubation period, measles begins with a fever and cough, congestion, and conjunctivitis. The rash begins on the head and spreads inferiorly by day 3. As the rash blooms, the classic morbilliform eruption becomes apparent. A biopsy of affected skin will be nonspecific; measles is diagnosed with a nasopharyngeal culture and serologic assay. Dr. Finch pointed out that dermatologists are unlikely to see measles in its earliest stages because their expertise will be called on only after it becomes clear that the patient is not experiencing just a mild illness with a viral exanthem.
When there’s suspicion for measles, a full-body skin exam is needed. “Koplik’s spots – the gray white papules on the buccal mucosa – are not pathognomonic in themselves, but in the clinical scenario of a person with measles” they can help the dermatologist make a definitive call, he said.
Vitamin A can be given to a patient with active measles, but prevention via immunization at age 12 months and 5 years is the only way to stop the disease, Dr. Finch noted.
Dr. Finch reported that he has no relevant conflicts of interest.
ORLANDO – New tricks from ticks, near-zero Zika, and the perils of personal grooming: Dermatologists have a lot to think about along the infectious disease spectrum in 2019, according to Justin Finch, MD, speaking at the Orlando Dermatology Aesthetic and Clinical Conference.
Anaphylaxis from alpha-gal syndrome is on the rise, caused in part by the geographic spread of the Lone Star tick. Beginning in 2006, isolated cases of an anaphylactic reaction to cetuximab, the epidermal growth factor receptor antagonist used to treat certain cancers, began to be seen in a curious geographic distribution. “The anaphylaxis cases were restricted to the southeastern United States, the home of the Lone Star tick,” said Dr. Finch, of the department of dermatology at the University of Connecticut, Farmington.
With some detective work, physicians and epidemiologists eventually determined that patients were reacting to an oligosaccharide called galactose-alpha–1,3-galactose (alpha-gal) found in cetuximab. This protein is also found in the meat of nonprimate mammals; individuals in the southeastern United States, where the Lone Star tick is endemic, had been sensitized via exposure to alpha-gal from Lone Star tick bites.
“Alpha-gal syndrome is on the rise,” said Dr. Finch, driven by the increased spread of this tick. Individuals who are sensitized develop delayed anaphylaxis 2-7 hours after ingesting red meat such as beef, pork, or lamb. “Ask about it,” said Dr. Finch, in patients who develop urticaria, dyspnea, angioedema, or hypotension without a clear offender. Because of the delay between allergen ingestion and anaphylaxis, it can be hard to connect the dots.
A number of drugs other than cetuximab contain alpha-gal, so patients must also be told to avoid these agents, said Dr. Finch, who noted that alpha-gal syndrome isn’t the only emerging culprit for tick-borne diseases. “The tick is the ride of choice for arthropod-borne diseases in the U.S.,” he added. “Year after year, tick-borne diseases top mosquito-borne diseases in the U.S.” Zika’s explosion in 2016 made that year the exception to the rule.
Now, Zika virus may be on the wane – the number of case reports have plummeted both in the United States and in Central and South America this past year – but it hasn’t completely gone away. “It looks like it fell off all the maps,” but the virus is still present at low levels, he said.
When Zika virus is symptomatic, there’s often a nonspecific maculopapular rash. Critically, Dr. Finch said, “women with a rash are four times as likely to have adverse congenital outcomes. This is the important point for us to take home as dermatologists. ... It’s really important to have a high index of suspicion and to screen these women as they are coming into our clinic.”
Turning back to ticks, Lyme disease continues to be a problem in endemic areas in the Northeast, the mid-Atlantic region, and the Midwest, said Dr. Finch, so it’s a perennial on the differential diagnosis for dermatologists.
An Asian tick new to North America was seen for the first time in New Jersey in the summer of 2017. The Asian longhorned tick carries a phlebovirus that causes severe fever with thrombocytopenia syndrome, a disease with a 15% fatality rate. The reservoir host of this virus in Asia isn’t known, said Dr. Finch, adding that no cases of the virus have yet been seen in the United States. As of November 2018, according to the Centers for Disease Control and Prevention, the tick had been found in nine states (Arkansas, Connecticut, Maryland, North Carolina, New Jersey, New York, Pennsylvania, Virginia, and West Virginia).
“What’s not on the rise? Pubic lice. We are destroying their natural habitat!” said Dr. Finch, citing surveys about personal grooming that show that more than 90% of women remove at least some of their pubic hair. Most college campuses are currently reporting essentially no cases of pubic lice, he noted.
However, the same personal grooming practices may be contributing to increases in molluscum contagiosum, herpes simplex virus, some strains of human papillomavirus, and cutaneous Streptococcus pyogenes infections, he said.
Another STI has had a resurgence in geographic pockets around the nation and among specific populations, said Dr. Finch. Syphilis is on the rise among gay and bisexual men and African Americans. Known as the “great imitator,” syphilis should be on the differential for dermatologists when the clinical picture isn’t quite adding up. “Think of this, and screen with an RPR [rapid plasma reagin],” he said.
Finally, an old enemy is back: A total of 11 measles outbreaks were reported in 2018. “We need to know about measles because of the complications,” said Dr. Finch. Even years later, such dire sequelae as subacute sclerosing panencephalitis can crop up, he added.
After a 2-week incubation period, measles begins with a fever and cough, congestion, and conjunctivitis. The rash begins on the head and spreads inferiorly by day 3. As the rash blooms, the classic morbilliform eruption becomes apparent. A biopsy of affected skin will be nonspecific; measles is diagnosed with a nasopharyngeal culture and serologic assay. Dr. Finch pointed out that dermatologists are unlikely to see measles in its earliest stages because their expertise will be called on only after it becomes clear that the patient is not experiencing just a mild illness with a viral exanthem.
When there’s suspicion for measles, a full-body skin exam is needed. “Koplik’s spots – the gray white papules on the buccal mucosa – are not pathognomonic in themselves, but in the clinical scenario of a person with measles” they can help the dermatologist make a definitive call, he said.
Vitamin A can be given to a patient with active measles, but prevention via immunization at age 12 months and 5 years is the only way to stop the disease, Dr. Finch noted.
Dr. Finch reported that he has no relevant conflicts of interest.
ORLANDO – New tricks from ticks, near-zero Zika, and the perils of personal grooming: Dermatologists have a lot to think about along the infectious disease spectrum in 2019, according to Justin Finch, MD, speaking at the Orlando Dermatology Aesthetic and Clinical Conference.
Anaphylaxis from alpha-gal syndrome is on the rise, caused in part by the geographic spread of the Lone Star tick. Beginning in 2006, isolated cases of an anaphylactic reaction to cetuximab, the epidermal growth factor receptor antagonist used to treat certain cancers, began to be seen in a curious geographic distribution. “The anaphylaxis cases were restricted to the southeastern United States, the home of the Lone Star tick,” said Dr. Finch, of the department of dermatology at the University of Connecticut, Farmington.
With some detective work, physicians and epidemiologists eventually determined that patients were reacting to an oligosaccharide called galactose-alpha–1,3-galactose (alpha-gal) found in cetuximab. This protein is also found in the meat of nonprimate mammals; individuals in the southeastern United States, where the Lone Star tick is endemic, had been sensitized via exposure to alpha-gal from Lone Star tick bites.
“Alpha-gal syndrome is on the rise,” said Dr. Finch, driven by the increased spread of this tick. Individuals who are sensitized develop delayed anaphylaxis 2-7 hours after ingesting red meat such as beef, pork, or lamb. “Ask about it,” said Dr. Finch, in patients who develop urticaria, dyspnea, angioedema, or hypotension without a clear offender. Because of the delay between allergen ingestion and anaphylaxis, it can be hard to connect the dots.
A number of drugs other than cetuximab contain alpha-gal, so patients must also be told to avoid these agents, said Dr. Finch, who noted that alpha-gal syndrome isn’t the only emerging culprit for tick-borne diseases. “The tick is the ride of choice for arthropod-borne diseases in the U.S.,” he added. “Year after year, tick-borne diseases top mosquito-borne diseases in the U.S.” Zika’s explosion in 2016 made that year the exception to the rule.
Now, Zika virus may be on the wane – the number of case reports have plummeted both in the United States and in Central and South America this past year – but it hasn’t completely gone away. “It looks like it fell off all the maps,” but the virus is still present at low levels, he said.
When Zika virus is symptomatic, there’s often a nonspecific maculopapular rash. Critically, Dr. Finch said, “women with a rash are four times as likely to have adverse congenital outcomes. This is the important point for us to take home as dermatologists. ... It’s really important to have a high index of suspicion and to screen these women as they are coming into our clinic.”
Turning back to ticks, Lyme disease continues to be a problem in endemic areas in the Northeast, the mid-Atlantic region, and the Midwest, said Dr. Finch, so it’s a perennial on the differential diagnosis for dermatologists.
An Asian tick new to North America was seen for the first time in New Jersey in the summer of 2017. The Asian longhorned tick carries a phlebovirus that causes severe fever with thrombocytopenia syndrome, a disease with a 15% fatality rate. The reservoir host of this virus in Asia isn’t known, said Dr. Finch, adding that no cases of the virus have yet been seen in the United States. As of November 2018, according to the Centers for Disease Control and Prevention, the tick had been found in nine states (Arkansas, Connecticut, Maryland, North Carolina, New Jersey, New York, Pennsylvania, Virginia, and West Virginia).
“What’s not on the rise? Pubic lice. We are destroying their natural habitat!” said Dr. Finch, citing surveys about personal grooming that show that more than 90% of women remove at least some of their pubic hair. Most college campuses are currently reporting essentially no cases of pubic lice, he noted.
However, the same personal grooming practices may be contributing to increases in molluscum contagiosum, herpes simplex virus, some strains of human papillomavirus, and cutaneous Streptococcus pyogenes infections, he said.
Another STI has had a resurgence in geographic pockets around the nation and among specific populations, said Dr. Finch. Syphilis is on the rise among gay and bisexual men and African Americans. Known as the “great imitator,” syphilis should be on the differential for dermatologists when the clinical picture isn’t quite adding up. “Think of this, and screen with an RPR [rapid plasma reagin],” he said.
Finally, an old enemy is back: A total of 11 measles outbreaks were reported in 2018. “We need to know about measles because of the complications,” said Dr. Finch. Even years later, such dire sequelae as subacute sclerosing panencephalitis can crop up, he added.
After a 2-week incubation period, measles begins with a fever and cough, congestion, and conjunctivitis. The rash begins on the head and spreads inferiorly by day 3. As the rash blooms, the classic morbilliform eruption becomes apparent. A biopsy of affected skin will be nonspecific; measles is diagnosed with a nasopharyngeal culture and serologic assay. Dr. Finch pointed out that dermatologists are unlikely to see measles in its earliest stages because their expertise will be called on only after it becomes clear that the patient is not experiencing just a mild illness with a viral exanthem.
When there’s suspicion for measles, a full-body skin exam is needed. “Koplik’s spots – the gray white papules on the buccal mucosa – are not pathognomonic in themselves, but in the clinical scenario of a person with measles” they can help the dermatologist make a definitive call, he said.
Vitamin A can be given to a patient with active measles, but prevention via immunization at age 12 months and 5 years is the only way to stop the disease, Dr. Finch noted.
Dr. Finch reported that he has no relevant conflicts of interest.
EXPERT ANALYSIS FROM ODAC 2019
FDA permits marketing of first M. genitalium diagnostic test
the first test for the diagnoses of sexually transmitted infections (STIs) caused by the M. genitalium bacterium, the agency reported in a press release.
M. genitalium is associated with nongonococcal urethritis in men and cervicitis in women, causing 15%-30% of persistent or recurring urethritis cases and 10%-30% of cervicitis cases, according to the Centers for Disease Control and Prevention. It also can lead to pelvic inflammatory disease (PID) in women. The assay is a nucleic acid amplification test, which can detect the bacterium in urine, as well as urethral, penile meatal, endocervical, or vaginal swab samples.
In a clinical study of 11,774 samples, the Aptima assay correctly identified M. genitalium in about 90% of vaginal, male urethral, male urine, and penile samples. It also correctly identified the bacterium in female urine and endocervical samples 78% and 82% of the time, respectively. The test was even more accurate in identifying samples that did not have M. genitalium present, according to an FDA press release
“In the past, it has been hard to diagnose this organism. By being able to detect it more reliably, doctors may be able to more carefully tailor treatment and use medicines most likely to be effective,” FDA Commissioner Scott Gottlieb, MD, said in the press release. “Having accurate and reliable tests to identify the specific bacteria that’s causing an infection can assist doctors in choosing the right treatment for the right infection, which can reduce overuse of antibiotics and help in the fight against antimicrobial resistance.”
Find the full press release on the FDA website.
the first test for the diagnoses of sexually transmitted infections (STIs) caused by the M. genitalium bacterium, the agency reported in a press release.
M. genitalium is associated with nongonococcal urethritis in men and cervicitis in women, causing 15%-30% of persistent or recurring urethritis cases and 10%-30% of cervicitis cases, according to the Centers for Disease Control and Prevention. It also can lead to pelvic inflammatory disease (PID) in women. The assay is a nucleic acid amplification test, which can detect the bacterium in urine, as well as urethral, penile meatal, endocervical, or vaginal swab samples.
In a clinical study of 11,774 samples, the Aptima assay correctly identified M. genitalium in about 90% of vaginal, male urethral, male urine, and penile samples. It also correctly identified the bacterium in female urine and endocervical samples 78% and 82% of the time, respectively. The test was even more accurate in identifying samples that did not have M. genitalium present, according to an FDA press release
“In the past, it has been hard to diagnose this organism. By being able to detect it more reliably, doctors may be able to more carefully tailor treatment and use medicines most likely to be effective,” FDA Commissioner Scott Gottlieb, MD, said in the press release. “Having accurate and reliable tests to identify the specific bacteria that’s causing an infection can assist doctors in choosing the right treatment for the right infection, which can reduce overuse of antibiotics and help in the fight against antimicrobial resistance.”
Find the full press release on the FDA website.
the first test for the diagnoses of sexually transmitted infections (STIs) caused by the M. genitalium bacterium, the agency reported in a press release.
M. genitalium is associated with nongonococcal urethritis in men and cervicitis in women, causing 15%-30% of persistent or recurring urethritis cases and 10%-30% of cervicitis cases, according to the Centers for Disease Control and Prevention. It also can lead to pelvic inflammatory disease (PID) in women. The assay is a nucleic acid amplification test, which can detect the bacterium in urine, as well as urethral, penile meatal, endocervical, or vaginal swab samples.
In a clinical study of 11,774 samples, the Aptima assay correctly identified M. genitalium in about 90% of vaginal, male urethral, male urine, and penile samples. It also correctly identified the bacterium in female urine and endocervical samples 78% and 82% of the time, respectively. The test was even more accurate in identifying samples that did not have M. genitalium present, according to an FDA press release
“In the past, it has been hard to diagnose this organism. By being able to detect it more reliably, doctors may be able to more carefully tailor treatment and use medicines most likely to be effective,” FDA Commissioner Scott Gottlieb, MD, said in the press release. “Having accurate and reliable tests to identify the specific bacteria that’s causing an infection can assist doctors in choosing the right treatment for the right infection, which can reduce overuse of antibiotics and help in the fight against antimicrobial resistance.”
Find the full press release on the FDA website.
Flu activity increases after 2 weeks of declines
according to the Centers for Disease Control and Prevention.
The proportion of outpatient visits for influenza-like illness (ILI) was 3.3% for the most recent measurement period, the CDC’s influenza division reported Jan 25. The previous 2-week decline had seen ILI visits dip down to 3.1% for the week ending Jan. 12 after hitting a season high of 4%.
To go along with the national increase in visits, more states reported high levels of flu activity. For the week ending Jan. 19, seven states were at level 10 on the CDC’s 1-10 scale, compared with four the previous week, and there were 18 states in the high range (levels 8-10), compared with 9 the week before, the CDC said.
Three flu-related pediatric deaths were reported in the week ending Jan. 19, although all three occurred during earlier weeks. The total number of pediatric deaths for the 2018-2019 season is now up to 22. Deaths among all ages, which are reported a week later, totaled 118 for the week ending Jan. 12, with 63% of reporting complete. There were 144 deaths during the week ending Jan. 5, with reporting 86% complete. During the second full week of 2018, in the middle of the very severe 2017-2018 season, there were 1,537 flu-related deaths, CDC data show.
according to the Centers for Disease Control and Prevention.
The proportion of outpatient visits for influenza-like illness (ILI) was 3.3% for the most recent measurement period, the CDC’s influenza division reported Jan 25. The previous 2-week decline had seen ILI visits dip down to 3.1% for the week ending Jan. 12 after hitting a season high of 4%.
To go along with the national increase in visits, more states reported high levels of flu activity. For the week ending Jan. 19, seven states were at level 10 on the CDC’s 1-10 scale, compared with four the previous week, and there were 18 states in the high range (levels 8-10), compared with 9 the week before, the CDC said.
Three flu-related pediatric deaths were reported in the week ending Jan. 19, although all three occurred during earlier weeks. The total number of pediatric deaths for the 2018-2019 season is now up to 22. Deaths among all ages, which are reported a week later, totaled 118 for the week ending Jan. 12, with 63% of reporting complete. There were 144 deaths during the week ending Jan. 5, with reporting 86% complete. During the second full week of 2018, in the middle of the very severe 2017-2018 season, there were 1,537 flu-related deaths, CDC data show.
according to the Centers for Disease Control and Prevention.
The proportion of outpatient visits for influenza-like illness (ILI) was 3.3% for the most recent measurement period, the CDC’s influenza division reported Jan 25. The previous 2-week decline had seen ILI visits dip down to 3.1% for the week ending Jan. 12 after hitting a season high of 4%.
To go along with the national increase in visits, more states reported high levels of flu activity. For the week ending Jan. 19, seven states were at level 10 on the CDC’s 1-10 scale, compared with four the previous week, and there were 18 states in the high range (levels 8-10), compared with 9 the week before, the CDC said.
Three flu-related pediatric deaths were reported in the week ending Jan. 19, although all three occurred during earlier weeks. The total number of pediatric deaths for the 2018-2019 season is now up to 22. Deaths among all ages, which are reported a week later, totaled 118 for the week ending Jan. 12, with 63% of reporting complete. There were 144 deaths during the week ending Jan. 5, with reporting 86% complete. During the second full week of 2018, in the middle of the very severe 2017-2018 season, there were 1,537 flu-related deaths, CDC data show.
Single-dose tafenoquine appears to prevent malaria relapse
Single-dose tafenoquine therapy safely reduces the risk of Plasmodium vivax relapse in patients with normal glucose-6-phosphate dehydrogenase (G6PD) activity, according to the results of two phase 3, double-blind, randomized controlled trials.
Findings from both studies were published in two separate reports in the New England Journal of Medicine.
In the first study, the Dose and Efficacy Trial Evaluating Chloroquine and Tafenoquine in Vivax Elimination (DETECTIVE), the risk of P. vivax recurrence was approximately 70% lower with tafenoquine versus placebo, wrote Marcus V.G. Lacerda, MD, of Fundação de Medicina Tropical Doutor Heitor Vieira Dourado in Manaus, Brazil, and his colleagues.
The study included 522 patients with confirmed P. vivax infection from Peru, Brazil, Ethiopia, Cambodia, Thailand, and the Philippines. Patients received 3 days of chloroquine therapy (600 mg on days 1 and 2, and 300 mg on day 3) and were randomly assigned on a 2:1:1 basis to receive a single 300-mg dose of tafenoquine on day 1 or 2, primaquine once daily for 14 days, or placebo.
Since primaquine and tafenoquine can cause clinically significant hemolysis in individuals with G6PD deficiency, the study included only patients with normal G6PD activity.
In the intention-to-treat analysis, 62% of tafenoquine recipients were free from P. vivax recurrence (95% confidence interval [CI], 55%-69%) at 6 months, as were 70% of primaquine recipients (95% CI, 60%-77%) and 28% of placebo recipients (95% CI, 20%-37%). Compared with placebo, the reduction in risk of recurrence was 70% with tafenoquine (hazard ratio [HR], 0.30; 95% CI, 0.22-0.40; P less than .001) and 74% with primaquine.
Declines in hemoglobin levels were greatest in the tafenoquine group but were not associated with symptomatic anemia and resolved without intervention, the investigators wrote.
In addition to the quantitative G6PD test, the investigators also evaluated a qualitative test, which “failed to identify 16 patients most at risk for hemolysis,” they reported. “If tafenoquine use is expanded, adoption of reliable quantitative point-of-care G6PD tests will be needed; such tests are not currently available but are in development.”
In the second study, Global Assessment of Tafenoquine Hemolytic Risk (GATHER), Alejandro Llanos-Cuentas, MD, of Universidad Peruana Cayetano Heredia, Lima, Peru, and his colleagues enrolled 251 patients with confirmed P. vivax infection from Peru, Brazil, Columbia, Vietnam, and Thailand. They attempted to recruit women with moderate G6PD levels, but only one participant met this criterion – all others had normal G6PD activity.
Patients received 3-day course of chloroquine and were randomly assigned on a 2:1 basis to either tafenoquine or primaquine at the same doses as in the DETECTIVE trial.
At 6 months, 2% (95% CI, 1%-6%) of tafenoquine recipients and 1% (95% CI, 0.2%-6%) of primaquine recipients had decreased hemoglobin levels, but none consequently needed treatment. The medications also caused a similar degree and time course of hemoglobin decrease, the investigators noted.
A meta-analysis of GATHER and DETECTIVE confirmed that tafenoquine more often led to a decreased hemoglobin level (4% versus 1.5% with primaquine). Tafenoquine also did not meet prespecified criteria for noninferiority compared with primaquine, with respective 6-month recurrence rates of 67% versus 73%.
However, GATHER deployed “extensive” support to help patients adhere to the 15-day primaquine course, Dr. Llanos-Cuentas and his colleagues wrote. “Without such interventions, adherence to primaquine has been reported to be as low as 24% in Southeast Asia, with a corresponding attenuation of efficacy.”
GlaxoSmithKline and Medicines for Malaria Venture funded both studies, and GSK funded and conducted the meta-analysis. Dr. Llanos-Cuentas and several coinvestigators reported ties to GSK, Medicines for Malaria Venture, the Gambia, and LSTMH. Dr. Lacerda reported having no conflicts of interest.
SOURCES: Lacerda MVG et al. N Engl J Med 2019;380:215-28, and Llanos-Cuentas A et al. N Engl J Med 2019;380:229-41.
The studies show that tafenoquine reduces the risk of Plasmodium vivax recurrence in patients with quantitatively confirmed normal glucose-6-phosphate dehydrogenase (G6PD) activity, Nicholas J. White, FRS, wrote in an accompanying editorial.
But the need for this test and current prescribing restrictions will “limit the potential deployment of tafenoquine, at least in the immediate future,” he said. He praised the developers of tafenoquine “for persevering with this potentially valuable antimalarial drug, despite the difficulties,” but cautioned that it’s too soon to conclude that tafenoquine can be used safely and routinely on a large scale “and thus fulfill its promise as a radical improvement in the treatment of malaria.”
Currently, tafenoquine may not be used during pregnancy, lactation, or in patients younger than 16 years, Dr. White noted. Tafenoquine, like primaquine, causes dose-dependent hemolysis in patients with G6PD deficiency, but unlike primaquine, it is given as a single large dose. Hence, pretreatment quantitative G6PD testing is necessary. Point-of-care quantitative G6PD tests have been developed but await extensive field testing, Dr. White said.
Dr. White is with Mahidol University, Bangkok, Thailand, and University of Oxford, England. He reported having no financial disclosures. These comments are from his accompanying editorial ( N Engl J Med. 2019;380:285-6 ).
The studies show that tafenoquine reduces the risk of Plasmodium vivax recurrence in patients with quantitatively confirmed normal glucose-6-phosphate dehydrogenase (G6PD) activity, Nicholas J. White, FRS, wrote in an accompanying editorial.
But the need for this test and current prescribing restrictions will “limit the potential deployment of tafenoquine, at least in the immediate future,” he said. He praised the developers of tafenoquine “for persevering with this potentially valuable antimalarial drug, despite the difficulties,” but cautioned that it’s too soon to conclude that tafenoquine can be used safely and routinely on a large scale “and thus fulfill its promise as a radical improvement in the treatment of malaria.”
Currently, tafenoquine may not be used during pregnancy, lactation, or in patients younger than 16 years, Dr. White noted. Tafenoquine, like primaquine, causes dose-dependent hemolysis in patients with G6PD deficiency, but unlike primaquine, it is given as a single large dose. Hence, pretreatment quantitative G6PD testing is necessary. Point-of-care quantitative G6PD tests have been developed but await extensive field testing, Dr. White said.
Dr. White is with Mahidol University, Bangkok, Thailand, and University of Oxford, England. He reported having no financial disclosures. These comments are from his accompanying editorial ( N Engl J Med. 2019;380:285-6 ).
The studies show that tafenoquine reduces the risk of Plasmodium vivax recurrence in patients with quantitatively confirmed normal glucose-6-phosphate dehydrogenase (G6PD) activity, Nicholas J. White, FRS, wrote in an accompanying editorial.
But the need for this test and current prescribing restrictions will “limit the potential deployment of tafenoquine, at least in the immediate future,” he said. He praised the developers of tafenoquine “for persevering with this potentially valuable antimalarial drug, despite the difficulties,” but cautioned that it’s too soon to conclude that tafenoquine can be used safely and routinely on a large scale “and thus fulfill its promise as a radical improvement in the treatment of malaria.”
Currently, tafenoquine may not be used during pregnancy, lactation, or in patients younger than 16 years, Dr. White noted. Tafenoquine, like primaquine, causes dose-dependent hemolysis in patients with G6PD deficiency, but unlike primaquine, it is given as a single large dose. Hence, pretreatment quantitative G6PD testing is necessary. Point-of-care quantitative G6PD tests have been developed but await extensive field testing, Dr. White said.
Dr. White is with Mahidol University, Bangkok, Thailand, and University of Oxford, England. He reported having no financial disclosures. These comments are from his accompanying editorial ( N Engl J Med. 2019;380:285-6 ).
Single-dose tafenoquine therapy safely reduces the risk of Plasmodium vivax relapse in patients with normal glucose-6-phosphate dehydrogenase (G6PD) activity, according to the results of two phase 3, double-blind, randomized controlled trials.
Findings from both studies were published in two separate reports in the New England Journal of Medicine.
In the first study, the Dose and Efficacy Trial Evaluating Chloroquine and Tafenoquine in Vivax Elimination (DETECTIVE), the risk of P. vivax recurrence was approximately 70% lower with tafenoquine versus placebo, wrote Marcus V.G. Lacerda, MD, of Fundação de Medicina Tropical Doutor Heitor Vieira Dourado in Manaus, Brazil, and his colleagues.
The study included 522 patients with confirmed P. vivax infection from Peru, Brazil, Ethiopia, Cambodia, Thailand, and the Philippines. Patients received 3 days of chloroquine therapy (600 mg on days 1 and 2, and 300 mg on day 3) and were randomly assigned on a 2:1:1 basis to receive a single 300-mg dose of tafenoquine on day 1 or 2, primaquine once daily for 14 days, or placebo.
Since primaquine and tafenoquine can cause clinically significant hemolysis in individuals with G6PD deficiency, the study included only patients with normal G6PD activity.
In the intention-to-treat analysis, 62% of tafenoquine recipients were free from P. vivax recurrence (95% confidence interval [CI], 55%-69%) at 6 months, as were 70% of primaquine recipients (95% CI, 60%-77%) and 28% of placebo recipients (95% CI, 20%-37%). Compared with placebo, the reduction in risk of recurrence was 70% with tafenoquine (hazard ratio [HR], 0.30; 95% CI, 0.22-0.40; P less than .001) and 74% with primaquine.
Declines in hemoglobin levels were greatest in the tafenoquine group but were not associated with symptomatic anemia and resolved without intervention, the investigators wrote.
In addition to the quantitative G6PD test, the investigators also evaluated a qualitative test, which “failed to identify 16 patients most at risk for hemolysis,” they reported. “If tafenoquine use is expanded, adoption of reliable quantitative point-of-care G6PD tests will be needed; such tests are not currently available but are in development.”
In the second study, Global Assessment of Tafenoquine Hemolytic Risk (GATHER), Alejandro Llanos-Cuentas, MD, of Universidad Peruana Cayetano Heredia, Lima, Peru, and his colleagues enrolled 251 patients with confirmed P. vivax infection from Peru, Brazil, Columbia, Vietnam, and Thailand. They attempted to recruit women with moderate G6PD levels, but only one participant met this criterion – all others had normal G6PD activity.
Patients received 3-day course of chloroquine and were randomly assigned on a 2:1 basis to either tafenoquine or primaquine at the same doses as in the DETECTIVE trial.
At 6 months, 2% (95% CI, 1%-6%) of tafenoquine recipients and 1% (95% CI, 0.2%-6%) of primaquine recipients had decreased hemoglobin levels, but none consequently needed treatment. The medications also caused a similar degree and time course of hemoglobin decrease, the investigators noted.
A meta-analysis of GATHER and DETECTIVE confirmed that tafenoquine more often led to a decreased hemoglobin level (4% versus 1.5% with primaquine). Tafenoquine also did not meet prespecified criteria for noninferiority compared with primaquine, with respective 6-month recurrence rates of 67% versus 73%.
However, GATHER deployed “extensive” support to help patients adhere to the 15-day primaquine course, Dr. Llanos-Cuentas and his colleagues wrote. “Without such interventions, adherence to primaquine has been reported to be as low as 24% in Southeast Asia, with a corresponding attenuation of efficacy.”
GlaxoSmithKline and Medicines for Malaria Venture funded both studies, and GSK funded and conducted the meta-analysis. Dr. Llanos-Cuentas and several coinvestigators reported ties to GSK, Medicines for Malaria Venture, the Gambia, and LSTMH. Dr. Lacerda reported having no conflicts of interest.
SOURCES: Lacerda MVG et al. N Engl J Med 2019;380:215-28, and Llanos-Cuentas A et al. N Engl J Med 2019;380:229-41.
Single-dose tafenoquine therapy safely reduces the risk of Plasmodium vivax relapse in patients with normal glucose-6-phosphate dehydrogenase (G6PD) activity, according to the results of two phase 3, double-blind, randomized controlled trials.
Findings from both studies were published in two separate reports in the New England Journal of Medicine.
In the first study, the Dose and Efficacy Trial Evaluating Chloroquine and Tafenoquine in Vivax Elimination (DETECTIVE), the risk of P. vivax recurrence was approximately 70% lower with tafenoquine versus placebo, wrote Marcus V.G. Lacerda, MD, of Fundação de Medicina Tropical Doutor Heitor Vieira Dourado in Manaus, Brazil, and his colleagues.
The study included 522 patients with confirmed P. vivax infection from Peru, Brazil, Ethiopia, Cambodia, Thailand, and the Philippines. Patients received 3 days of chloroquine therapy (600 mg on days 1 and 2, and 300 mg on day 3) and were randomly assigned on a 2:1:1 basis to receive a single 300-mg dose of tafenoquine on day 1 or 2, primaquine once daily for 14 days, or placebo.
Since primaquine and tafenoquine can cause clinically significant hemolysis in individuals with G6PD deficiency, the study included only patients with normal G6PD activity.
In the intention-to-treat analysis, 62% of tafenoquine recipients were free from P. vivax recurrence (95% confidence interval [CI], 55%-69%) at 6 months, as were 70% of primaquine recipients (95% CI, 60%-77%) and 28% of placebo recipients (95% CI, 20%-37%). Compared with placebo, the reduction in risk of recurrence was 70% with tafenoquine (hazard ratio [HR], 0.30; 95% CI, 0.22-0.40; P less than .001) and 74% with primaquine.
Declines in hemoglobin levels were greatest in the tafenoquine group but were not associated with symptomatic anemia and resolved without intervention, the investigators wrote.
In addition to the quantitative G6PD test, the investigators also evaluated a qualitative test, which “failed to identify 16 patients most at risk for hemolysis,” they reported. “If tafenoquine use is expanded, adoption of reliable quantitative point-of-care G6PD tests will be needed; such tests are not currently available but are in development.”
In the second study, Global Assessment of Tafenoquine Hemolytic Risk (GATHER), Alejandro Llanos-Cuentas, MD, of Universidad Peruana Cayetano Heredia, Lima, Peru, and his colleagues enrolled 251 patients with confirmed P. vivax infection from Peru, Brazil, Columbia, Vietnam, and Thailand. They attempted to recruit women with moderate G6PD levels, but only one participant met this criterion – all others had normal G6PD activity.
Patients received 3-day course of chloroquine and were randomly assigned on a 2:1 basis to either tafenoquine or primaquine at the same doses as in the DETECTIVE trial.
At 6 months, 2% (95% CI, 1%-6%) of tafenoquine recipients and 1% (95% CI, 0.2%-6%) of primaquine recipients had decreased hemoglobin levels, but none consequently needed treatment. The medications also caused a similar degree and time course of hemoglobin decrease, the investigators noted.
A meta-analysis of GATHER and DETECTIVE confirmed that tafenoquine more often led to a decreased hemoglobin level (4% versus 1.5% with primaquine). Tafenoquine also did not meet prespecified criteria for noninferiority compared with primaquine, with respective 6-month recurrence rates of 67% versus 73%.
However, GATHER deployed “extensive” support to help patients adhere to the 15-day primaquine course, Dr. Llanos-Cuentas and his colleagues wrote. “Without such interventions, adherence to primaquine has been reported to be as low as 24% in Southeast Asia, with a corresponding attenuation of efficacy.”
GlaxoSmithKline and Medicines for Malaria Venture funded both studies, and GSK funded and conducted the meta-analysis. Dr. Llanos-Cuentas and several coinvestigators reported ties to GSK, Medicines for Malaria Venture, the Gambia, and LSTMH. Dr. Lacerda reported having no conflicts of interest.
SOURCES: Lacerda MVG et al. N Engl J Med 2019;380:215-28, and Llanos-Cuentas A et al. N Engl J Med 2019;380:229-41.
FROM NEW ENGLAND JOURNAL OF MEDICINE
Key clinical point:
Major finding: In DETECTIVE, 6-month rates of freedom from recurrence from Plasmodium vivax infection were 62% with tafenoquine, 70% with primaquine, and 28% with placebo.
Study details: Two randomized, phase 3, double-blind controlled trials of patients with confirmed P. vivax infection (DETECTIVE and GATHER) and without deficient G6PD activity.
Disclosures: GlaxoSmithKline and Medicines for Malaria Venture funded both studies, and GSK funded and conducted the meta-analysis. Dr. Llanos-Cuentas and several coinvestigators reported ties to GSK, Medicines for Malaria Venture, the Gambia, and LSTMH. Dr. Lacerda reported having financial disclosures.
Source: Lacerda MVG et al. N Engl J Med 2019;380:215-28, and Llanos-Cuentas A et al. N Engl J Med 2019;380:229-41.
New study determines factors that can send flu patients to the ICU
Numerous independent factors – including a history of obstructive/central sleep apnea syndrome (OSAS/CSAS) or myocardial infarction, along with a body mass index greater than 30 g/m2 – could be related to ICU admission and subsequent high mortality rates in influenza patients, according to an analysis of patients in the Netherlands who were treated during the influenza epidemic of 2015-2016.
Along with determining these factors, lead author M.C. Beumer, of Radboud University Medical Center, the Netherlands, and his coauthors found that “coinfections with bacterial, fungal, and viral pathogens developed more often in patients who were admitted to the ICU.” The study was published in the Journal of Critical Care.
The coauthors reviewed 199 influenza patients who were admitted to two medical centers in the Netherlands during October 2015–April 2016. Of those patients, 45 (23%) were admitted to the ICU, primarily because of respiratory failure, and their mortality rate was 17/45 (38%) versus an overall mortality rate of 18/199 (9%).
Compared with patients in the normal ward, patients admitted to the ICU more frequently had a history of OSAS/CSAS (11% vs. 3%; P = .03) and MI (20% vs. 6%; P = .007), along with a BMI higher than 30 g/m2 (30% vs. 15%; P = .04) and dyspnea as a symptom (77% vs. 48%,; P = .001). In addition, more ICU-admitted patients had influenza A rather than influenza B, compared with those not admitted (87% vs. 66%; P = .009).
Pulmonary coinfections – including bacterial, fungal, and viral pathogens – were also proportionally higher among the 45 ICU patients (56% vs. 20%; P less than .0001). The most common bacterial pathogens were Staphylococcus aureus (11%) and Streptococcus pneumoniae (7%) while Aspergillus fumigatus (18%) and Pneumocystis jirovecii (7%) topped the fungal pathogens.
Mr. Beumer and his colleagues noted potential limitations of their work, including the selection of patients from among the “most severely ill” contributing to an ICU admission rate that surpassed the 5%-10% described elsewhere. They also admitted that their study relied on a “relatively small sample size,” focusing on one seasonal influenza outbreak. However, “despite the limited validity,” they reiterated that “the identified factors may contribute to a complicated disease course and could represent a tool for early recognition of the influenza patients at risk for a complicated disease course.”
The authors reported no conflicts of interest.
SOURCE: Beumer MC et al. J Crit Care. 2019;50:59-65.
.
Numerous independent factors – including a history of obstructive/central sleep apnea syndrome (OSAS/CSAS) or myocardial infarction, along with a body mass index greater than 30 g/m2 – could be related to ICU admission and subsequent high mortality rates in influenza patients, according to an analysis of patients in the Netherlands who were treated during the influenza epidemic of 2015-2016.
Along with determining these factors, lead author M.C. Beumer, of Radboud University Medical Center, the Netherlands, and his coauthors found that “coinfections with bacterial, fungal, and viral pathogens developed more often in patients who were admitted to the ICU.” The study was published in the Journal of Critical Care.
The coauthors reviewed 199 influenza patients who were admitted to two medical centers in the Netherlands during October 2015–April 2016. Of those patients, 45 (23%) were admitted to the ICU, primarily because of respiratory failure, and their mortality rate was 17/45 (38%) versus an overall mortality rate of 18/199 (9%).
Compared with patients in the normal ward, patients admitted to the ICU more frequently had a history of OSAS/CSAS (11% vs. 3%; P = .03) and MI (20% vs. 6%; P = .007), along with a BMI higher than 30 g/m2 (30% vs. 15%; P = .04) and dyspnea as a symptom (77% vs. 48%,; P = .001). In addition, more ICU-admitted patients had influenza A rather than influenza B, compared with those not admitted (87% vs. 66%; P = .009).
Pulmonary coinfections – including bacterial, fungal, and viral pathogens – were also proportionally higher among the 45 ICU patients (56% vs. 20%; P less than .0001). The most common bacterial pathogens were Staphylococcus aureus (11%) and Streptococcus pneumoniae (7%) while Aspergillus fumigatus (18%) and Pneumocystis jirovecii (7%) topped the fungal pathogens.
Mr. Beumer and his colleagues noted potential limitations of their work, including the selection of patients from among the “most severely ill” contributing to an ICU admission rate that surpassed the 5%-10% described elsewhere. They also admitted that their study relied on a “relatively small sample size,” focusing on one seasonal influenza outbreak. However, “despite the limited validity,” they reiterated that “the identified factors may contribute to a complicated disease course and could represent a tool for early recognition of the influenza patients at risk for a complicated disease course.”
The authors reported no conflicts of interest.
SOURCE: Beumer MC et al. J Crit Care. 2019;50:59-65.
.
Numerous independent factors – including a history of obstructive/central sleep apnea syndrome (OSAS/CSAS) or myocardial infarction, along with a body mass index greater than 30 g/m2 – could be related to ICU admission and subsequent high mortality rates in influenza patients, according to an analysis of patients in the Netherlands who were treated during the influenza epidemic of 2015-2016.
Along with determining these factors, lead author M.C. Beumer, of Radboud University Medical Center, the Netherlands, and his coauthors found that “coinfections with bacterial, fungal, and viral pathogens developed more often in patients who were admitted to the ICU.” The study was published in the Journal of Critical Care.
The coauthors reviewed 199 influenza patients who were admitted to two medical centers in the Netherlands during October 2015–April 2016. Of those patients, 45 (23%) were admitted to the ICU, primarily because of respiratory failure, and their mortality rate was 17/45 (38%) versus an overall mortality rate of 18/199 (9%).
Compared with patients in the normal ward, patients admitted to the ICU more frequently had a history of OSAS/CSAS (11% vs. 3%; P = .03) and MI (20% vs. 6%; P = .007), along with a BMI higher than 30 g/m2 (30% vs. 15%; P = .04) and dyspnea as a symptom (77% vs. 48%,; P = .001). In addition, more ICU-admitted patients had influenza A rather than influenza B, compared with those not admitted (87% vs. 66%; P = .009).
Pulmonary coinfections – including bacterial, fungal, and viral pathogens – were also proportionally higher among the 45 ICU patients (56% vs. 20%; P less than .0001). The most common bacterial pathogens were Staphylococcus aureus (11%) and Streptococcus pneumoniae (7%) while Aspergillus fumigatus (18%) and Pneumocystis jirovecii (7%) topped the fungal pathogens.
Mr. Beumer and his colleagues noted potential limitations of their work, including the selection of patients from among the “most severely ill” contributing to an ICU admission rate that surpassed the 5%-10% described elsewhere. They also admitted that their study relied on a “relatively small sample size,” focusing on one seasonal influenza outbreak. However, “despite the limited validity,” they reiterated that “the identified factors may contribute to a complicated disease course and could represent a tool for early recognition of the influenza patients at risk for a complicated disease course.”
The authors reported no conflicts of interest.
SOURCE: Beumer MC et al. J Crit Care. 2019;50:59-65.
.
FROM THE JOURNAL OF CRITICAL CARE
Key clinical point:
Major finding: Flu patients in the ICU more frequently had a history of obstructive/central sleep apnea syndrome (11% vs. 3%; P = .03) and MI (20% vs. 6%; P = .007), compared with non-ICU flu patients.
Study details: A retrospective cohort study of 199 flu patients who were admitted to two academic hospitals in the Netherlands.
Disclosures: The authors reported no conflicts of interest.
Source: Beumer MC et al. J Crit Care. 2019; 50:59-65.
FDA approves 0.5-mL Fluzone Quadrivalent vaccine in young children
according to Sanofi Pasteur, the vaccine’s manufacturer.
FDA approval was based on results of a phase 4 safety and immunogenicity study of nearly 2,000 children. Children aged 6-35 months who received one or two doses of Fluzone at 0.50 mL had a safety profile similar to that of children who received one or two doses of Fluzone at 0.25 mL. Results from the study were presented at the Pediatric Academic Societies annual meeting in April 2018.
This flu vaccine should not be given to anyone with a severe allergic reaction (anaphylaxis) to egg or egg products, according to the press release.
In children, the most common adverse events are injection site reactions, muscle aches, fatigue, and headache; in young children, irritability, abnormal crying, drowsiness, appetite loss, vomiting, and fever are common.
“Offering pediatricians the convenience of the same 0.5-mL dose option for children may help streamline immunization efforts. The potentially life-threatening effects of influenza in children reported during the 2017-18 season, especially among those who were not vaccinated, is sobering,” David P. Greenberg, MD, regional medical head of Sanofi Pasteur of North America, said in the press release.
Find the full press release on the Sanofi website.
according to Sanofi Pasteur, the vaccine’s manufacturer.
FDA approval was based on results of a phase 4 safety and immunogenicity study of nearly 2,000 children. Children aged 6-35 months who received one or two doses of Fluzone at 0.50 mL had a safety profile similar to that of children who received one or two doses of Fluzone at 0.25 mL. Results from the study were presented at the Pediatric Academic Societies annual meeting in April 2018.
This flu vaccine should not be given to anyone with a severe allergic reaction (anaphylaxis) to egg or egg products, according to the press release.
In children, the most common adverse events are injection site reactions, muscle aches, fatigue, and headache; in young children, irritability, abnormal crying, drowsiness, appetite loss, vomiting, and fever are common.
“Offering pediatricians the convenience of the same 0.5-mL dose option for children may help streamline immunization efforts. The potentially life-threatening effects of influenza in children reported during the 2017-18 season, especially among those who were not vaccinated, is sobering,” David P. Greenberg, MD, regional medical head of Sanofi Pasteur of North America, said in the press release.
Find the full press release on the Sanofi website.
according to Sanofi Pasteur, the vaccine’s manufacturer.
FDA approval was based on results of a phase 4 safety and immunogenicity study of nearly 2,000 children. Children aged 6-35 months who received one or two doses of Fluzone at 0.50 mL had a safety profile similar to that of children who received one or two doses of Fluzone at 0.25 mL. Results from the study were presented at the Pediatric Academic Societies annual meeting in April 2018.
This flu vaccine should not be given to anyone with a severe allergic reaction (anaphylaxis) to egg or egg products, according to the press release.
In children, the most common adverse events are injection site reactions, muscle aches, fatigue, and headache; in young children, irritability, abnormal crying, drowsiness, appetite loss, vomiting, and fever are common.
“Offering pediatricians the convenience of the same 0.5-mL dose option for children may help streamline immunization efforts. The potentially life-threatening effects of influenza in children reported during the 2017-18 season, especially among those who were not vaccinated, is sobering,” David P. Greenberg, MD, regional medical head of Sanofi Pasteur of North America, said in the press release.
Find the full press release on the Sanofi website.
Bedbugs in the Workplace
Prescribed opioids increase pneumonia risk in patients with, without HIV
Prescribed opioids were associated with an increase in community-acquired pneumonia in patients with and without HIV infection, according to results of a large database study.
People living with HIV (PLWH) appeared to have a greater community-acquired pneumonia (CAP) risk at lower opioid doses and particularly with immunosuppressive opioids compared with uninfected patients, although the difference was not significant, E. Jennifer Edelman, MD, of Yale University, New Haven, Conn., and her colleagues wrote in JAMA Internal Medicine.
The researchers performed a nested case-control study comprising 25,392 participants (98.9% men; mean age, 55 years) in the Veterans Aging Cohort Study from Jan. 1, 2000, through Dec. 31, 2012.
Dr. Edelman and her colleagues compared the characteristics of 4,246 CAP cases with those of 21,146 uninfected controls in the sample. They also compared cases and controls by HIV status. They ran bivariate and multivariate analysis to estimate odds ratios for CAP risk associated with opioid exposure. In addition, the researchers ran models stratified by HIV status and formally checked for an interaction between prescribed opioid characteristics and HIV status.
In unadjusted logistic regression, prescribed opioids were associated with increased odds of CAP, with the greatest risk observed with currently prescribed opioids, compared with past prescribed opioids or no opioids.
Prescribed opioids remained associated with CAP in the adjusted models for past unknown or nonimmunosuppressive (adjusted OR, 1.24; 95% confidence interval, 1.09-1.40) and past immunosuppressive opioid use (aOR, 1.42; 95% CI, 1.21-1.67).
For currently prescribed opioids, nonimmunosuppressive or unknown, the aOR was 1.23 (95% CI, 1.03-1.48). For currently prescribed immunosuppressive opioids, the aOR was 3.18 (95% CI, 2.44-4.14).
The researchers also found evidence of a dose-response effect such that currently prescribed high-dose opioids were associated with the greatest CAP risk, followed by medium- and then by low-dose opioids, whether immunosuppressive or not.
With regard to the effect of HIV status in stratified, adjusted analyses, CAP risk tended to be greater among PLWH with current prescribed opioids, especially immunosuppressive opioids, compared with uninfected patients. However, the overall interaction term for opioid × HIV status was not significant (P = .36).
Although the researchers stated that a limitation of their study was an inability to prove causality or rule out respiratory depression (vs. immunosuppression) as the cause of the increased CAP risk, “the observed effects of opioid immunosuppressive properties and CAP risk lend support to our hypothesis that opioids have clinically relevant immunosuppressive properties.”
Dr. Edelman and her colleagues cited several limitations. For example, they were not able to determine whether patients took their prescribed medications appropriately and assess whether the patients took nonmedically prescribed opioids. Also, because men made up such a large portion of the study population, it is unclear whether the results are generalizable to women.
Nevertheless, the study “adds to growing evidence of potential medical harms associated with prescribed opioids,” they wrote.
“Health care professionals should be aware of this additional CAP risk when they prescribe opioids, and future studies should investigate the effects of opioids prescribed for longer durations and on other immune-related outcomes,” wrote Dr. Edelman and her colleagues. “Understanding whether mitigating the risk of prescribed opioids for CAP is possible by using a lower dose and nonimmunosuppressive opioids awaits further study.”
However, without such data, when prescribed opioids are warranted, physicians should attempt to modify other factors known to affect CAP risk, including smoking and lack of vaccination, Dr. Edelman and her colleagues concluded.
Several U.S. government agencies and Yale University provided funding for the study. The authors reported that they had no conflicts.
SOURCE: Edelman EJ et al. JAMA Intern Med. 2019 Jan 7. doi: 10.1001/jamainternmed.2018.6101.
Prescribed opioids were associated with an increase in community-acquired pneumonia in patients with and without HIV infection, according to results of a large database study.
People living with HIV (PLWH) appeared to have a greater community-acquired pneumonia (CAP) risk at lower opioid doses and particularly with immunosuppressive opioids compared with uninfected patients, although the difference was not significant, E. Jennifer Edelman, MD, of Yale University, New Haven, Conn., and her colleagues wrote in JAMA Internal Medicine.
The researchers performed a nested case-control study comprising 25,392 participants (98.9% men; mean age, 55 years) in the Veterans Aging Cohort Study from Jan. 1, 2000, through Dec. 31, 2012.
Dr. Edelman and her colleagues compared the characteristics of 4,246 CAP cases with those of 21,146 uninfected controls in the sample. They also compared cases and controls by HIV status. They ran bivariate and multivariate analysis to estimate odds ratios for CAP risk associated with opioid exposure. In addition, the researchers ran models stratified by HIV status and formally checked for an interaction between prescribed opioid characteristics and HIV status.
In unadjusted logistic regression, prescribed opioids were associated with increased odds of CAP, with the greatest risk observed with currently prescribed opioids, compared with past prescribed opioids or no opioids.
Prescribed opioids remained associated with CAP in the adjusted models for past unknown or nonimmunosuppressive (adjusted OR, 1.24; 95% confidence interval, 1.09-1.40) and past immunosuppressive opioid use (aOR, 1.42; 95% CI, 1.21-1.67).
For currently prescribed opioids, nonimmunosuppressive or unknown, the aOR was 1.23 (95% CI, 1.03-1.48). For currently prescribed immunosuppressive opioids, the aOR was 3.18 (95% CI, 2.44-4.14).
The researchers also found evidence of a dose-response effect such that currently prescribed high-dose opioids were associated with the greatest CAP risk, followed by medium- and then by low-dose opioids, whether immunosuppressive or not.
With regard to the effect of HIV status in stratified, adjusted analyses, CAP risk tended to be greater among PLWH with current prescribed opioids, especially immunosuppressive opioids, compared with uninfected patients. However, the overall interaction term for opioid × HIV status was not significant (P = .36).
Although the researchers stated that a limitation of their study was an inability to prove causality or rule out respiratory depression (vs. immunosuppression) as the cause of the increased CAP risk, “the observed effects of opioid immunosuppressive properties and CAP risk lend support to our hypothesis that opioids have clinically relevant immunosuppressive properties.”
Dr. Edelman and her colleagues cited several limitations. For example, they were not able to determine whether patients took their prescribed medications appropriately and assess whether the patients took nonmedically prescribed opioids. Also, because men made up such a large portion of the study population, it is unclear whether the results are generalizable to women.
Nevertheless, the study “adds to growing evidence of potential medical harms associated with prescribed opioids,” they wrote.
“Health care professionals should be aware of this additional CAP risk when they prescribe opioids, and future studies should investigate the effects of opioids prescribed for longer durations and on other immune-related outcomes,” wrote Dr. Edelman and her colleagues. “Understanding whether mitigating the risk of prescribed opioids for CAP is possible by using a lower dose and nonimmunosuppressive opioids awaits further study.”
However, without such data, when prescribed opioids are warranted, physicians should attempt to modify other factors known to affect CAP risk, including smoking and lack of vaccination, Dr. Edelman and her colleagues concluded.
Several U.S. government agencies and Yale University provided funding for the study. The authors reported that they had no conflicts.
SOURCE: Edelman EJ et al. JAMA Intern Med. 2019 Jan 7. doi: 10.1001/jamainternmed.2018.6101.
Prescribed opioids were associated with an increase in community-acquired pneumonia in patients with and without HIV infection, according to results of a large database study.
People living with HIV (PLWH) appeared to have a greater community-acquired pneumonia (CAP) risk at lower opioid doses and particularly with immunosuppressive opioids compared with uninfected patients, although the difference was not significant, E. Jennifer Edelman, MD, of Yale University, New Haven, Conn., and her colleagues wrote in JAMA Internal Medicine.
The researchers performed a nested case-control study comprising 25,392 participants (98.9% men; mean age, 55 years) in the Veterans Aging Cohort Study from Jan. 1, 2000, through Dec. 31, 2012.
Dr. Edelman and her colleagues compared the characteristics of 4,246 CAP cases with those of 21,146 uninfected controls in the sample. They also compared cases and controls by HIV status. They ran bivariate and multivariate analysis to estimate odds ratios for CAP risk associated with opioid exposure. In addition, the researchers ran models stratified by HIV status and formally checked for an interaction between prescribed opioid characteristics and HIV status.
In unadjusted logistic regression, prescribed opioids were associated with increased odds of CAP, with the greatest risk observed with currently prescribed opioids, compared with past prescribed opioids or no opioids.
Prescribed opioids remained associated with CAP in the adjusted models for past unknown or nonimmunosuppressive (adjusted OR, 1.24; 95% confidence interval, 1.09-1.40) and past immunosuppressive opioid use (aOR, 1.42; 95% CI, 1.21-1.67).
For currently prescribed opioids, nonimmunosuppressive or unknown, the aOR was 1.23 (95% CI, 1.03-1.48). For currently prescribed immunosuppressive opioids, the aOR was 3.18 (95% CI, 2.44-4.14).
The researchers also found evidence of a dose-response effect such that currently prescribed high-dose opioids were associated with the greatest CAP risk, followed by medium- and then by low-dose opioids, whether immunosuppressive or not.
With regard to the effect of HIV status in stratified, adjusted analyses, CAP risk tended to be greater among PLWH with current prescribed opioids, especially immunosuppressive opioids, compared with uninfected patients. However, the overall interaction term for opioid × HIV status was not significant (P = .36).
Although the researchers stated that a limitation of their study was an inability to prove causality or rule out respiratory depression (vs. immunosuppression) as the cause of the increased CAP risk, “the observed effects of opioid immunosuppressive properties and CAP risk lend support to our hypothesis that opioids have clinically relevant immunosuppressive properties.”
Dr. Edelman and her colleagues cited several limitations. For example, they were not able to determine whether patients took their prescribed medications appropriately and assess whether the patients took nonmedically prescribed opioids. Also, because men made up such a large portion of the study population, it is unclear whether the results are generalizable to women.
Nevertheless, the study “adds to growing evidence of potential medical harms associated with prescribed opioids,” they wrote.
“Health care professionals should be aware of this additional CAP risk when they prescribe opioids, and future studies should investigate the effects of opioids prescribed for longer durations and on other immune-related outcomes,” wrote Dr. Edelman and her colleagues. “Understanding whether mitigating the risk of prescribed opioids for CAP is possible by using a lower dose and nonimmunosuppressive opioids awaits further study.”
However, without such data, when prescribed opioids are warranted, physicians should attempt to modify other factors known to affect CAP risk, including smoking and lack of vaccination, Dr. Edelman and her colleagues concluded.
Several U.S. government agencies and Yale University provided funding for the study. The authors reported that they had no conflicts.
SOURCE: Edelman EJ et al. JAMA Intern Med. 2019 Jan 7. doi: 10.1001/jamainternmed.2018.6101.
FROM JAMA INTERNAL MEDICINE
Key clinical point: Prescribed opioids, especially those with immunosuppressive properties, are associated with increased community-acquired pneumonia risk.
Major finding: For currently prescribed immunosuppressive opioids, the adjusted odds ratio for community-acquired pneumonia was 3.18 (95% confidence interval, 2.44-4.14).
Study details: A nested case-control study of 25,392 patients in the Veterans Aging Cohort Study from Jan. 1, 2000, through Dec. 31, 2012.
Disclosures: Funding was provided by a variety of government organizations and Yale University, New Haven, Conn. The authors reported that they had no conflicts.
Source: Edelman EJ et al. JAMA Intern Med. 2019 Jan 7. doi: 10.1001/jamainternmed.2018.6101.
Study shows evidence of herd immunity with HPV vaccine
Introduction of the quadrivalent human papillomavirus (HPV) vaccine was associated with significant declines in the incidence of vaccine-type virus both in vaccinated and unvaccinated young women, according to a study published in Pediatrics.
Four surveillance studies, conducted between 2006 and 2017, examined the rate of positive tests for vaccine-type HPV among 1,580 vaccinated and unvaccinated women aged 13-26 years. The majority of participants identified as African American or multiracial.
Overall, 97% of study participants received the quadrivalent vaccine, with vaccination rates increasing from 0% to 84% over the four waves of vaccination. Vaccine effectiveness – representing the relative risk of infection in vaccinated individuals, compared with unvaccinated risk before introduction of the vaccine – increased by 72% from wave 1 to wave 2, 91% from wave 1 to wave 3, and 80% from wave 1 to wave 4.
Among women who were vaccinated, rates of the quadrivalent vaccine–type HPV decreased by 81%, from 35% to 7%. But even among women who were unvaccinated, detection of the vaccine-targeted strains of HPV decreased by 40%, from 32% to 19%.
Chelse Spinner of the University of Cincinnati and her coauthors wrote that the decline in the quadrivalent vaccine–type HPV provided evidence of direct protection and high vaccine effectiveness in this real-world setting.
“This degree of effectiveness is remarkable given the fact that vaccination was defined as having received one or more doses (i.e., was not defined as having completed the vaccination series) and that women in this study were likely at a substantially higher risk for preexisting HPV infection than [were] those in the HPV vaccine clinical trials because of their reported sexual behaviors,” they wrote. “As noted in a recent review, evidence about herd protection will be a key component of cost-effectiveness analysis evaluating cervical cancer screening strategies.”
Twelve percent of women in the studies received the nine-valent HPV vaccine, and among these women, the rate of infection with the nine-valent vaccine-type HPV decreased from 47% in the first wave of vaccination to 14% in the last wave, representing a 71% decline.
The proportion of vaccinated women in the study who were infected with one or more of the five viral subtypes included in the nine-valent but not in the quadrivalent vaccine decreased significantly by 69%, from 23% to 7%.
However, these data also suggested a nonsignificant 58% increase among unvaccinated women in infections with one of the five subtypes covered by the nine-valent vaccine but not the quadrivalent vaccine.
Ms. Spinner and her associates noted this increase was unexpected and suggested the increase may be caused by the differences between vaccinated and unvaccinated women.
“For example, if women who are unvaccinated versus women who are vaccinated are more likely to practice riskier behaviors that would increase their risk of acquiring HPV, they would be more likely to acquire non–vaccine-type HPV,” they wrote.
Ms. Spinner graduated from the University of Cincinnati and now is a graduate student at the University of South Florida, Tampa. The study was funded by the National Institutes of Health. Darron R. Brown declared shares of Merck, but the other coauthors declared no other relevant financial disclosures.
SOURCE: Spinner C et al. Pediatrics. 2019, Jan 22. doi: 10.1542/peds.2018-1902.
This study of the real-world effectiveness of the HPV vaccine adds to the growing body of literature, and has produced three important results.
The first is that women who had received at least one dose of the vaccine were considered vaccinated, and because of their level of sexual activity, many likely would have already been infected with some HPV subtypes. The high vaccine effectiveness seen in this study despite these factors adds weight to evidence that this HPV vaccine is highly protective.
The study also showed evidence of cross-protection, in that even women who had received only the quadrivalent vaccine still had significantly reduced rates of infection with the HPV subtypes included in the nine-valent vaccine.
It also provides significant evidence of the herd immunity effect against the subtypes included in the quadrivalent vaccine.
Amanda F. Dempsey, MD, PhD, is from the adult and child consortium for health outcomes research and delivery science at the University of Colorado, Denver. These comments are taken from an accompanying editorial (Pediatrics. 2019 Jan 22. doi: 10.1542/peds.2018-3427). Dr. Dempsey declared advisory board roles for Merck, Sanofi, and Pfizer and a consultancy for Pfizer. She received no external funding.
This study of the real-world effectiveness of the HPV vaccine adds to the growing body of literature, and has produced three important results.
The first is that women who had received at least one dose of the vaccine were considered vaccinated, and because of their level of sexual activity, many likely would have already been infected with some HPV subtypes. The high vaccine effectiveness seen in this study despite these factors adds weight to evidence that this HPV vaccine is highly protective.
The study also showed evidence of cross-protection, in that even women who had received only the quadrivalent vaccine still had significantly reduced rates of infection with the HPV subtypes included in the nine-valent vaccine.
It also provides significant evidence of the herd immunity effect against the subtypes included in the quadrivalent vaccine.
Amanda F. Dempsey, MD, PhD, is from the adult and child consortium for health outcomes research and delivery science at the University of Colorado, Denver. These comments are taken from an accompanying editorial (Pediatrics. 2019 Jan 22. doi: 10.1542/peds.2018-3427). Dr. Dempsey declared advisory board roles for Merck, Sanofi, and Pfizer and a consultancy for Pfizer. She received no external funding.
This study of the real-world effectiveness of the HPV vaccine adds to the growing body of literature, and has produced three important results.
The first is that women who had received at least one dose of the vaccine were considered vaccinated, and because of their level of sexual activity, many likely would have already been infected with some HPV subtypes. The high vaccine effectiveness seen in this study despite these factors adds weight to evidence that this HPV vaccine is highly protective.
The study also showed evidence of cross-protection, in that even women who had received only the quadrivalent vaccine still had significantly reduced rates of infection with the HPV subtypes included in the nine-valent vaccine.
It also provides significant evidence of the herd immunity effect against the subtypes included in the quadrivalent vaccine.
Amanda F. Dempsey, MD, PhD, is from the adult and child consortium for health outcomes research and delivery science at the University of Colorado, Denver. These comments are taken from an accompanying editorial (Pediatrics. 2019 Jan 22. doi: 10.1542/peds.2018-3427). Dr. Dempsey declared advisory board roles for Merck, Sanofi, and Pfizer and a consultancy for Pfizer. She received no external funding.
Introduction of the quadrivalent human papillomavirus (HPV) vaccine was associated with significant declines in the incidence of vaccine-type virus both in vaccinated and unvaccinated young women, according to a study published in Pediatrics.
Four surveillance studies, conducted between 2006 and 2017, examined the rate of positive tests for vaccine-type HPV among 1,580 vaccinated and unvaccinated women aged 13-26 years. The majority of participants identified as African American or multiracial.
Overall, 97% of study participants received the quadrivalent vaccine, with vaccination rates increasing from 0% to 84% over the four waves of vaccination. Vaccine effectiveness – representing the relative risk of infection in vaccinated individuals, compared with unvaccinated risk before introduction of the vaccine – increased by 72% from wave 1 to wave 2, 91% from wave 1 to wave 3, and 80% from wave 1 to wave 4.
Among women who were vaccinated, rates of the quadrivalent vaccine–type HPV decreased by 81%, from 35% to 7%. But even among women who were unvaccinated, detection of the vaccine-targeted strains of HPV decreased by 40%, from 32% to 19%.
Chelse Spinner of the University of Cincinnati and her coauthors wrote that the decline in the quadrivalent vaccine–type HPV provided evidence of direct protection and high vaccine effectiveness in this real-world setting.
“This degree of effectiveness is remarkable given the fact that vaccination was defined as having received one or more doses (i.e., was not defined as having completed the vaccination series) and that women in this study were likely at a substantially higher risk for preexisting HPV infection than [were] those in the HPV vaccine clinical trials because of their reported sexual behaviors,” they wrote. “As noted in a recent review, evidence about herd protection will be a key component of cost-effectiveness analysis evaluating cervical cancer screening strategies.”
Twelve percent of women in the studies received the nine-valent HPV vaccine, and among these women, the rate of infection with the nine-valent vaccine-type HPV decreased from 47% in the first wave of vaccination to 14% in the last wave, representing a 71% decline.
The proportion of vaccinated women in the study who were infected with one or more of the five viral subtypes included in the nine-valent but not in the quadrivalent vaccine decreased significantly by 69%, from 23% to 7%.
However, these data also suggested a nonsignificant 58% increase among unvaccinated women in infections with one of the five subtypes covered by the nine-valent vaccine but not the quadrivalent vaccine.
Ms. Spinner and her associates noted this increase was unexpected and suggested the increase may be caused by the differences between vaccinated and unvaccinated women.
“For example, if women who are unvaccinated versus women who are vaccinated are more likely to practice riskier behaviors that would increase their risk of acquiring HPV, they would be more likely to acquire non–vaccine-type HPV,” they wrote.
Ms. Spinner graduated from the University of Cincinnati and now is a graduate student at the University of South Florida, Tampa. The study was funded by the National Institutes of Health. Darron R. Brown declared shares of Merck, but the other coauthors declared no other relevant financial disclosures.
SOURCE: Spinner C et al. Pediatrics. 2019, Jan 22. doi: 10.1542/peds.2018-1902.
Introduction of the quadrivalent human papillomavirus (HPV) vaccine was associated with significant declines in the incidence of vaccine-type virus both in vaccinated and unvaccinated young women, according to a study published in Pediatrics.
Four surveillance studies, conducted between 2006 and 2017, examined the rate of positive tests for vaccine-type HPV among 1,580 vaccinated and unvaccinated women aged 13-26 years. The majority of participants identified as African American or multiracial.
Overall, 97% of study participants received the quadrivalent vaccine, with vaccination rates increasing from 0% to 84% over the four waves of vaccination. Vaccine effectiveness – representing the relative risk of infection in vaccinated individuals, compared with unvaccinated risk before introduction of the vaccine – increased by 72% from wave 1 to wave 2, 91% from wave 1 to wave 3, and 80% from wave 1 to wave 4.
Among women who were vaccinated, rates of the quadrivalent vaccine–type HPV decreased by 81%, from 35% to 7%. But even among women who were unvaccinated, detection of the vaccine-targeted strains of HPV decreased by 40%, from 32% to 19%.
Chelse Spinner of the University of Cincinnati and her coauthors wrote that the decline in the quadrivalent vaccine–type HPV provided evidence of direct protection and high vaccine effectiveness in this real-world setting.
“This degree of effectiveness is remarkable given the fact that vaccination was defined as having received one or more doses (i.e., was not defined as having completed the vaccination series) and that women in this study were likely at a substantially higher risk for preexisting HPV infection than [were] those in the HPV vaccine clinical trials because of their reported sexual behaviors,” they wrote. “As noted in a recent review, evidence about herd protection will be a key component of cost-effectiveness analysis evaluating cervical cancer screening strategies.”
Twelve percent of women in the studies received the nine-valent HPV vaccine, and among these women, the rate of infection with the nine-valent vaccine-type HPV decreased from 47% in the first wave of vaccination to 14% in the last wave, representing a 71% decline.
The proportion of vaccinated women in the study who were infected with one or more of the five viral subtypes included in the nine-valent but not in the quadrivalent vaccine decreased significantly by 69%, from 23% to 7%.
However, these data also suggested a nonsignificant 58% increase among unvaccinated women in infections with one of the five subtypes covered by the nine-valent vaccine but not the quadrivalent vaccine.
Ms. Spinner and her associates noted this increase was unexpected and suggested the increase may be caused by the differences between vaccinated and unvaccinated women.
“For example, if women who are unvaccinated versus women who are vaccinated are more likely to practice riskier behaviors that would increase their risk of acquiring HPV, they would be more likely to acquire non–vaccine-type HPV,” they wrote.
Ms. Spinner graduated from the University of Cincinnati and now is a graduate student at the University of South Florida, Tampa. The study was funded by the National Institutes of Health. Darron R. Brown declared shares of Merck, but the other coauthors declared no other relevant financial disclosures.
SOURCE: Spinner C et al. Pediatrics. 2019, Jan 22. doi: 10.1542/peds.2018-1902.
FROM PEDIATRICS
Key clinical point:
Major finding: Infection rates for quadrivalent vaccine-covered HPV strains declined by 81% among vaccinated women.
Study details: Surveillance studies in 1,580 vaccinated and unvaccinated young women.
Disclosures: The study was funded by the National Institutes of Health. One author declared shares of Merck, but no other conflicts of interest were declared.
Source: Spinner C et al. Pediatrics. 2019, Jan 22. doi: 10.1542/peds.2018-1902.
Emphasize disease prevention in communications about HPV vaccine
Parents were much more confident about vaccinating their children against the human papillomavirus (HPV) when they were told about the diseases that the vaccine prevents rather than about safety, new research found.
In Pediatrics, researchers reported the outcomes of an online video-messaging study that attempted to address the most common parental questions and concerns about the HPV vaccine. They surveyed a national sample of 1,196 parents of children (aged 9-17 years) who watched four brief videos of a pediatrician talking about one of seven common concerns regarding HPV vaccination. The parents then were asked how each video affected them.
Parents who were exposed to messages about the diseases that the HPV vaccine prevented had the highest confidence in the HPV vaccine (46%). These messages included “HPV is a common virus that millions of people get every year. The HPV vaccine will protect your child from some cancers and genital warts” and “HPV infection can cause cancer in both men and women. The HPV vaccine will protect your child from many of these cancers.”
Similarly, parents exposed to messages about the need for HPV vaccination for both boys and girls also had the highest levels of confidence about HPV vaccination (44%).
Confidence was lower in parents exposed to messages about safety and side effects (30%)
“As such, reiterating vaccination benefits (including cancer prevention) when addressing concerns may also improve the impact of messages,” wrote Parth D. Shah, PhD, from the Fred Hutchinson Cancer Research Center, Seattle, and his coauthors.
Parents who received messages that expressed urgency about vaccination had lower confidence in the HPV vaccine.
“One reason may be that parents who are hesitant feel inappropriately rushed or that their concerns are not being treated with appropriate care,” the authors wrote.
However, messages that required a higher reading grade level and messages that were longer also seemed to inspire more confidence among parents. Parents who were exposed to messages about cancer prevention additionally were even more confident in HPV vaccine, Dr. Shah and his associates reported.
The study also found that 84% of parents wanted to talk to their children’s doctor about the diseases that the HPV vaccine prevented, while 68% wanted to talk about safety and side effects.
The study was funded by the Centers for Disease Control and Prevention and the National Cancer Institute. Dr. Shah was partially supported by an Agency for Healthcare Research and Quality grant. Another author declared being on paid advisory boards of research grants from Merck, Pfizer, and GlaxoSmithKline. No other conflicts of interest were declared.
SOURCE: Shah PD et al. Pediatrics. 2019 Feb. doi: 10.1542/peds.2018-1872.
Parents were much more confident about vaccinating their children against the human papillomavirus (HPV) when they were told about the diseases that the vaccine prevents rather than about safety, new research found.
In Pediatrics, researchers reported the outcomes of an online video-messaging study that attempted to address the most common parental questions and concerns about the HPV vaccine. They surveyed a national sample of 1,196 parents of children (aged 9-17 years) who watched four brief videos of a pediatrician talking about one of seven common concerns regarding HPV vaccination. The parents then were asked how each video affected them.
Parents who were exposed to messages about the diseases that the HPV vaccine prevented had the highest confidence in the HPV vaccine (46%). These messages included “HPV is a common virus that millions of people get every year. The HPV vaccine will protect your child from some cancers and genital warts” and “HPV infection can cause cancer in both men and women. The HPV vaccine will protect your child from many of these cancers.”
Similarly, parents exposed to messages about the need for HPV vaccination for both boys and girls also had the highest levels of confidence about HPV vaccination (44%).
Confidence was lower in parents exposed to messages about safety and side effects (30%)
“As such, reiterating vaccination benefits (including cancer prevention) when addressing concerns may also improve the impact of messages,” wrote Parth D. Shah, PhD, from the Fred Hutchinson Cancer Research Center, Seattle, and his coauthors.
Parents who received messages that expressed urgency about vaccination had lower confidence in the HPV vaccine.
“One reason may be that parents who are hesitant feel inappropriately rushed or that their concerns are not being treated with appropriate care,” the authors wrote.
However, messages that required a higher reading grade level and messages that were longer also seemed to inspire more confidence among parents. Parents who were exposed to messages about cancer prevention additionally were even more confident in HPV vaccine, Dr. Shah and his associates reported.
The study also found that 84% of parents wanted to talk to their children’s doctor about the diseases that the HPV vaccine prevented, while 68% wanted to talk about safety and side effects.
The study was funded by the Centers for Disease Control and Prevention and the National Cancer Institute. Dr. Shah was partially supported by an Agency for Healthcare Research and Quality grant. Another author declared being on paid advisory boards of research grants from Merck, Pfizer, and GlaxoSmithKline. No other conflicts of interest were declared.
SOURCE: Shah PD et al. Pediatrics. 2019 Feb. doi: 10.1542/peds.2018-1872.
Parents were much more confident about vaccinating their children against the human papillomavirus (HPV) when they were told about the diseases that the vaccine prevents rather than about safety, new research found.
In Pediatrics, researchers reported the outcomes of an online video-messaging study that attempted to address the most common parental questions and concerns about the HPV vaccine. They surveyed a national sample of 1,196 parents of children (aged 9-17 years) who watched four brief videos of a pediatrician talking about one of seven common concerns regarding HPV vaccination. The parents then were asked how each video affected them.
Parents who were exposed to messages about the diseases that the HPV vaccine prevented had the highest confidence in the HPV vaccine (46%). These messages included “HPV is a common virus that millions of people get every year. The HPV vaccine will protect your child from some cancers and genital warts” and “HPV infection can cause cancer in both men and women. The HPV vaccine will protect your child from many of these cancers.”
Similarly, parents exposed to messages about the need for HPV vaccination for both boys and girls also had the highest levels of confidence about HPV vaccination (44%).
Confidence was lower in parents exposed to messages about safety and side effects (30%)
“As such, reiterating vaccination benefits (including cancer prevention) when addressing concerns may also improve the impact of messages,” wrote Parth D. Shah, PhD, from the Fred Hutchinson Cancer Research Center, Seattle, and his coauthors.
Parents who received messages that expressed urgency about vaccination had lower confidence in the HPV vaccine.
“One reason may be that parents who are hesitant feel inappropriately rushed or that their concerns are not being treated with appropriate care,” the authors wrote.
However, messages that required a higher reading grade level and messages that were longer also seemed to inspire more confidence among parents. Parents who were exposed to messages about cancer prevention additionally were even more confident in HPV vaccine, Dr. Shah and his associates reported.
The study also found that 84% of parents wanted to talk to their children’s doctor about the diseases that the HPV vaccine prevented, while 68% wanted to talk about safety and side effects.
The study was funded by the Centers for Disease Control and Prevention and the National Cancer Institute. Dr. Shah was partially supported by an Agency for Healthcare Research and Quality grant. Another author declared being on paid advisory boards of research grants from Merck, Pfizer, and GlaxoSmithKline. No other conflicts of interest were declared.
SOURCE: Shah PD et al. Pediatrics. 2019 Feb. doi: 10.1542/peds.2018-1872.
FROM PEDIATRICS
Key clinical point: Information on the benefits of HPV vaccination can improve parent confidence.
Major finding: Messages about the disease and cancer prevention benefits of HPV vaccination inspired greater parent confidence.
Study details: Study in 1,196 parents of children aged 9-17 years.
Disclosures: The study was funded by the Centers for Disease Control and Prevention and the National Cancer Institute. Dr. Shah was partially supported by an Agency for Healthcare Research and Quality grant. Another author declared being on paid advisory boards of research grants from Merck, Pfizer, and GlaxoSmithKline. No other conflicts of interest were declared.
Source: Shah P et al. Pediatrics. 2019 Feb. doi. 10.1542/peds.2018-1872.