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Florida sees spike in deadly bacterial infections after Hurricane Ian
At least 4 people have died and 29 have been infected in Lee County after the hurricane, Florida health officials said in a news release.
Vibrio vulnificus bacteria is found in warm, brackish seawater, according to the Florida Department of Health. Anyone with open wounds or cuts should avoid standing water, floodwater, or seawater in the area, health officials said.
“Sewage spills in coastal waters, like those caused by Hurricane Ian, may increase bacteria levels,” the department advised in a news release. “People with open wounds, cuts, or scratches can be exposed to Vibrio vulnificus through direct contact with sea water or brackish water … Vibrio vulnificus can also cause disease in those who eat raw or undercooked oysters and shellfish.”
Infection can cause severe illness or death. Symptoms include fever, chills, decreased blood pressure, and blistering skin lesions. The bacteria does not spread person to person.
“If someone is concerned that they may have been exposed to Vibrio vulnificus and are experiencing the above symptoms, they should seek medical attention immediately,” officials said in the statement. “Individuals with wound infections should also seek care promptly.”
A version of this article first appeared on WebMD.com.
At least 4 people have died and 29 have been infected in Lee County after the hurricane, Florida health officials said in a news release.
Vibrio vulnificus bacteria is found in warm, brackish seawater, according to the Florida Department of Health. Anyone with open wounds or cuts should avoid standing water, floodwater, or seawater in the area, health officials said.
“Sewage spills in coastal waters, like those caused by Hurricane Ian, may increase bacteria levels,” the department advised in a news release. “People with open wounds, cuts, or scratches can be exposed to Vibrio vulnificus through direct contact with sea water or brackish water … Vibrio vulnificus can also cause disease in those who eat raw or undercooked oysters and shellfish.”
Infection can cause severe illness or death. Symptoms include fever, chills, decreased blood pressure, and blistering skin lesions. The bacteria does not spread person to person.
“If someone is concerned that they may have been exposed to Vibrio vulnificus and are experiencing the above symptoms, they should seek medical attention immediately,” officials said in the statement. “Individuals with wound infections should also seek care promptly.”
A version of this article first appeared on WebMD.com.
At least 4 people have died and 29 have been infected in Lee County after the hurricane, Florida health officials said in a news release.
Vibrio vulnificus bacteria is found in warm, brackish seawater, according to the Florida Department of Health. Anyone with open wounds or cuts should avoid standing water, floodwater, or seawater in the area, health officials said.
“Sewage spills in coastal waters, like those caused by Hurricane Ian, may increase bacteria levels,” the department advised in a news release. “People with open wounds, cuts, or scratches can be exposed to Vibrio vulnificus through direct contact with sea water or brackish water … Vibrio vulnificus can also cause disease in those who eat raw or undercooked oysters and shellfish.”
Infection can cause severe illness or death. Symptoms include fever, chills, decreased blood pressure, and blistering skin lesions. The bacteria does not spread person to person.
“If someone is concerned that they may have been exposed to Vibrio vulnificus and are experiencing the above symptoms, they should seek medical attention immediately,” officials said in the statement. “Individuals with wound infections should also seek care promptly.”
A version of this article first appeared on WebMD.com.
25 years of chickenpox vaccine: 91 million cases prevented
WASHINGTON – In the 25 years since the United States first launched its universal vaccinations program to protect children against chickenpox (varicella), the program has seen dramatic results, a data analysis indicates.
Results from 1995 – when universal vaccinations began – through 2019 were presented an annual scientific meeting on infectious diseases by Mona Marin, MD, a medical epidemiologist at the Centers for Disease Control and Prevention. Researchers analyzed published data and surveillance data reported to the CDC.
Deaths in under-20 group all but eliminated
Immunocompromised people or pregnant women and infants too young to be vaccinated also benefited from the children’s immunizations.
Each year, about 3.8 million cases, 10,500 hospitalizations, and 100 deaths from chickenpox are prevented in the United States thanks to the vaccination program, Dr. Marin said.
Over 25 years, 91 million cases, 238,000 hospitalizations, and 1,933 – 2,446 deaths have been prevented.
However, chickenpox is still widespread in most of the world.
U.S. first with universal program
The disease was thought to be of little consequence, Dr. Marin said, until the mid-1950s after the first cases of fatal varicella in immunocompromised children revealed the virus’ lethal potential.
The United States was the first country to introduce a universal vaccination program, Dr. Marin said. At the time, it was a one-dose vaccine. Within the first 10 years of the one-dose program, declines in chickenpox cases, hospitalization, and death rates went from 71% to 90% in comparison with previous years. But health care leaders wanted to close the remaining gap and target transmission in schools.
“It was a burden the United States considered unacceptable,” Dr. Marin said.
The leaders had seen the control of measles and polio and wanted the same for chickenpox.
Two-dose vaccines started in 2007
In 2007, the current two-dose policy was introduced. Administration of the first dose is recommended at age 12–15 months, and the second at age 4–6 years. Vaccination is required before the children enter kindergarten.
Coverage was high – at least 90% – the study authors reported; the two-dose program further reduced the number, size, and duration of outbreaks. Over the 25 years, the proportion of outbreaks with fewer than 10 cases increased from 28% to 73%.
By 2019, incidence had dropped by 97%, hospitalizations were down by 94%, and deaths had dropped by 97%.
The biggest decline was seen in those younger than 20, who were born during the vaccination program. That group saw declines of 97% to 99% in cases, hospitalizations, and incidence compared with rates before vaccinations.
Dr. Marin says one dose of the vaccine is moderately effective in preventing all varicella (82%) and is highly effective in preventing severe varicella (more than 97%).
“The second dose adds 10% or more improved protection against all varicella,” she said.
But there have been gains beyond medical advances.
Researchers calculated the economic benefit and found a net savings of $23 billion in medical costs (which also factored in lost wages from parents staying home to care for sick children).
Jaw-dropping results
Jeanne Marrazzo, MD, director of the division of infectious diseases at the University of Alabama at Birmingham, said in an interview that “as someone who is not a vaccinologist, the declines in deaths, let alone hospitalizations, were jaw-dropping. I hadn’t really seen a synthesis of the impact of one and two doses.”
She said the declines in zoster among young people were interesting. The big question, she said, is what impact this may have for shingles infections in middle-aged adults over time, since chickenpox and shingles are caused by the same virus.
Dr. Marrazzo also noted the economic savings calculations.
“It’s such a cheap intervention. It’s one of the best examples of how a simple vaccine can affect a cascade of events that are a result of chronic viral infection,” she said.
There are also messages for the current debates over COVID-19 vaccinations.
“For me, it is further evidence of the profound population-level effect safe vaccines can have,” Dr. Marrazzo said.
The authors and Dr. Marrazzo report no relevant financial relationships.
A version of this article first appeared on Medscape.com.
WASHINGTON – In the 25 years since the United States first launched its universal vaccinations program to protect children against chickenpox (varicella), the program has seen dramatic results, a data analysis indicates.
Results from 1995 – when universal vaccinations began – through 2019 were presented an annual scientific meeting on infectious diseases by Mona Marin, MD, a medical epidemiologist at the Centers for Disease Control and Prevention. Researchers analyzed published data and surveillance data reported to the CDC.
Deaths in under-20 group all but eliminated
Immunocompromised people or pregnant women and infants too young to be vaccinated also benefited from the children’s immunizations.
Each year, about 3.8 million cases, 10,500 hospitalizations, and 100 deaths from chickenpox are prevented in the United States thanks to the vaccination program, Dr. Marin said.
Over 25 years, 91 million cases, 238,000 hospitalizations, and 1,933 – 2,446 deaths have been prevented.
However, chickenpox is still widespread in most of the world.
U.S. first with universal program
The disease was thought to be of little consequence, Dr. Marin said, until the mid-1950s after the first cases of fatal varicella in immunocompromised children revealed the virus’ lethal potential.
The United States was the first country to introduce a universal vaccination program, Dr. Marin said. At the time, it was a one-dose vaccine. Within the first 10 years of the one-dose program, declines in chickenpox cases, hospitalization, and death rates went from 71% to 90% in comparison with previous years. But health care leaders wanted to close the remaining gap and target transmission in schools.
“It was a burden the United States considered unacceptable,” Dr. Marin said.
The leaders had seen the control of measles and polio and wanted the same for chickenpox.
Two-dose vaccines started in 2007
In 2007, the current two-dose policy was introduced. Administration of the first dose is recommended at age 12–15 months, and the second at age 4–6 years. Vaccination is required before the children enter kindergarten.
Coverage was high – at least 90% – the study authors reported; the two-dose program further reduced the number, size, and duration of outbreaks. Over the 25 years, the proportion of outbreaks with fewer than 10 cases increased from 28% to 73%.
By 2019, incidence had dropped by 97%, hospitalizations were down by 94%, and deaths had dropped by 97%.
The biggest decline was seen in those younger than 20, who were born during the vaccination program. That group saw declines of 97% to 99% in cases, hospitalizations, and incidence compared with rates before vaccinations.
Dr. Marin says one dose of the vaccine is moderately effective in preventing all varicella (82%) and is highly effective in preventing severe varicella (more than 97%).
“The second dose adds 10% or more improved protection against all varicella,” she said.
But there have been gains beyond medical advances.
Researchers calculated the economic benefit and found a net savings of $23 billion in medical costs (which also factored in lost wages from parents staying home to care for sick children).
Jaw-dropping results
Jeanne Marrazzo, MD, director of the division of infectious diseases at the University of Alabama at Birmingham, said in an interview that “as someone who is not a vaccinologist, the declines in deaths, let alone hospitalizations, were jaw-dropping. I hadn’t really seen a synthesis of the impact of one and two doses.”
She said the declines in zoster among young people were interesting. The big question, she said, is what impact this may have for shingles infections in middle-aged adults over time, since chickenpox and shingles are caused by the same virus.
Dr. Marrazzo also noted the economic savings calculations.
“It’s such a cheap intervention. It’s one of the best examples of how a simple vaccine can affect a cascade of events that are a result of chronic viral infection,” she said.
There are also messages for the current debates over COVID-19 vaccinations.
“For me, it is further evidence of the profound population-level effect safe vaccines can have,” Dr. Marrazzo said.
The authors and Dr. Marrazzo report no relevant financial relationships.
A version of this article first appeared on Medscape.com.
WASHINGTON – In the 25 years since the United States first launched its universal vaccinations program to protect children against chickenpox (varicella), the program has seen dramatic results, a data analysis indicates.
Results from 1995 – when universal vaccinations began – through 2019 were presented an annual scientific meeting on infectious diseases by Mona Marin, MD, a medical epidemiologist at the Centers for Disease Control and Prevention. Researchers analyzed published data and surveillance data reported to the CDC.
Deaths in under-20 group all but eliminated
Immunocompromised people or pregnant women and infants too young to be vaccinated also benefited from the children’s immunizations.
Each year, about 3.8 million cases, 10,500 hospitalizations, and 100 deaths from chickenpox are prevented in the United States thanks to the vaccination program, Dr. Marin said.
Over 25 years, 91 million cases, 238,000 hospitalizations, and 1,933 – 2,446 deaths have been prevented.
However, chickenpox is still widespread in most of the world.
U.S. first with universal program
The disease was thought to be of little consequence, Dr. Marin said, until the mid-1950s after the first cases of fatal varicella in immunocompromised children revealed the virus’ lethal potential.
The United States was the first country to introduce a universal vaccination program, Dr. Marin said. At the time, it was a one-dose vaccine. Within the first 10 years of the one-dose program, declines in chickenpox cases, hospitalization, and death rates went from 71% to 90% in comparison with previous years. But health care leaders wanted to close the remaining gap and target transmission in schools.
“It was a burden the United States considered unacceptable,” Dr. Marin said.
The leaders had seen the control of measles and polio and wanted the same for chickenpox.
Two-dose vaccines started in 2007
In 2007, the current two-dose policy was introduced. Administration of the first dose is recommended at age 12–15 months, and the second at age 4–6 years. Vaccination is required before the children enter kindergarten.
Coverage was high – at least 90% – the study authors reported; the two-dose program further reduced the number, size, and duration of outbreaks. Over the 25 years, the proportion of outbreaks with fewer than 10 cases increased from 28% to 73%.
By 2019, incidence had dropped by 97%, hospitalizations were down by 94%, and deaths had dropped by 97%.
The biggest decline was seen in those younger than 20, who were born during the vaccination program. That group saw declines of 97% to 99% in cases, hospitalizations, and incidence compared with rates before vaccinations.
Dr. Marin says one dose of the vaccine is moderately effective in preventing all varicella (82%) and is highly effective in preventing severe varicella (more than 97%).
“The second dose adds 10% or more improved protection against all varicella,” she said.
But there have been gains beyond medical advances.
Researchers calculated the economic benefit and found a net savings of $23 billion in medical costs (which also factored in lost wages from parents staying home to care for sick children).
Jaw-dropping results
Jeanne Marrazzo, MD, director of the division of infectious diseases at the University of Alabama at Birmingham, said in an interview that “as someone who is not a vaccinologist, the declines in deaths, let alone hospitalizations, were jaw-dropping. I hadn’t really seen a synthesis of the impact of one and two doses.”
She said the declines in zoster among young people were interesting. The big question, she said, is what impact this may have for shingles infections in middle-aged adults over time, since chickenpox and shingles are caused by the same virus.
Dr. Marrazzo also noted the economic savings calculations.
“It’s such a cheap intervention. It’s one of the best examples of how a simple vaccine can affect a cascade of events that are a result of chronic viral infection,” she said.
There are also messages for the current debates over COVID-19 vaccinations.
“For me, it is further evidence of the profound population-level effect safe vaccines can have,” Dr. Marrazzo said.
The authors and Dr. Marrazzo report no relevant financial relationships.
A version of this article first appeared on Medscape.com.
AT IDWEEK 2022
Monkeypox presentations, prevention strategies shifting
New areas of concern include transmissions among people experiencing homelessness and severe cases in immunocompromised persons.
Agam K. Rao, MD, with the Poxvirus and Rabies Branch of the Centers for Disease Control and Prevention, updated the global picture during an annual scientific meeting on infectious diseases: As of Oct. 14, the confirmed worldwide cases number 73,288, with more than one-third of them (27,317) in the United States. Case counts in the United States, however, have been decreasing since early August.
Cases have been most commonly found in men who have sex with men (MSM), though monkeypox has also been diagnosed in cisgender and transgender women, children, and men who do not report recent sex with other men.
Shift away from White men
Dr. Rao described a demographic shift in infections from White, non-Hispanic men early on to non-Hispanic Black and Hispanic men.
“There’s a lot of emphasis right now at CDC to try to understand these spreads, whether they are household [transmission] or another contact. We know that some of the women have had sexual contact with men who were diagnosed with monkeypox,” Dr. Rao said.
In children under age 12, direct skin-to-skin contact with household members seems to be the source, she said. In adolescents, as in adults, the main source seems to be male-male consensual sex.
“And just as in adults, Black and Hispanic children have been disproportionately affected,” she said.
No sustained spread outside MSM
Dr. Rao said that so far there has been no sustained spread detected beyond the MSM community. A CDC study of inmates in Cook County Jail in Chicago at the end of September, she noted, found no secondary cases.
However, health care workers are another group that was suspected to be at higher risk given close contact with patients, although there have been only three confirmed exposures. Sharps injuries from unroofed lesions are tied to some of those confirmed or suspected cases.
“We do not recommend unroofing lesions,” she said. “We’re getting very good samples from just rigorous swabbing of the lesions.”
She said that the CDC is also monitoring “a few hundred” cases, some of them severe, among people experiencing homelessness.
“We are working to try to understand the exposures that have occurred to those individuals and whether transmission has occurred person-to-person,” Dr. Rao said.
Severe cases among immunocompromised
Also of concern are people with compromised immune systems owing to advanced HIV or organ or stem cell transplants.
Among immunocompromised persons, Dr. Rao said, “we’re seeing large necrotic lesions affecting a large percentage of body surface, lesions that continue to develop over weeks.”
Boghuma Titanji, MD, PhD, MSc, a physician-scientist at Emory University in Atlanta, and an emerging-disease specialist, addressed the difference in presentations between immunocompromised and immunocompetent patients.
She said the main distinction is the extent of the lesions. Patients with AIDS and very low CD4 counts, for instance, are presenting with more lesions and have a longer course of illness.
Dr. Rao said in an interview, “It’s really important to understand someone’s immune status and understand whether they are severely immunocompromised. If there is a concern that a person has monkeypox, also testing for HIV concurrently may be important. It could be a missed opportunity to evaluate for it, especially given the fact that these can occur together.”
Assessing the size and appearance of the lesions is important to understanding whether patients could develop severe infection, she said.
Differences from past epidemics
Dr. Titanji said the current outbreak has some differences from historic outbreaks.
The incubation period, for instance, has tended to be shorter than in previous outbreaks – now 7-10 days, with a range of 5-14 days instead of a range of up to 21 days in previous outbreaks.
There are also more cases of presentations with only single lesions, which were infrequent in past epidemics, she said.
The scope of suspected cases has also broadened, with changing clinical features.
“We have expanded the clinical descriptions to include presentations that involve isolated rectal presentation – individuals presenting solely with rectal pain as the primary manifestation of monkeypox – or presenting with a sore throat as the only manifestation,” she said.
Expanding the case definition will help identify who should be tested.
“Monkeypox is an incredible clinical mimic,” Dr. Titanji said. “The rash can really take the form of a lot of the things we encounter on a regular basis in ID. It’s important to always have a low index of suspicion to test patients when they fit the right epidemiological profile.”
Vaccine strategy has evolved
Brett Petersen, MD, MPH, captain of the U.S. Public Health Service with the CDC, said that Jynneos, licensed by the U.S. Food and Drug Administration, continues to be the primary vaccine for monkeypox. However, the strategy has changed.
Whereas the initial vaccine strategy was to administer the vaccine after known exposure, the guidance now includes vaccinating after “both known and presumed exposures, as described in the eligible populations.”
It’s now been expanded even further to include preexposure inoculations for a wide group of people at greater risk, he explained.
Early data from the CDC indicate that the Jynneos vaccine is effective.
In a report updated in September, the CDC found that among 32 U.S. jurisdictions, monkeypox incidence was much higher among at-risk, unvaccinated people for whom vaccination is recommended than among those who got the Jynneos vaccine.
“Unvaccinated people had 14 times the risk of monkeypox disease compared to people who were vaccinated,” the CDC reported.
Asked about the end goal for monkeypox, Dr. Petersen said, “Our goal should be elimination. I think that is an achievable goal, but it will depend on a lot of factors and a lot of continued public health efforts.”
Dr. Rao, Dr. Titanji, and Dr. Petersen declared no relevant financial relationships.
A version of this article first appeared on Medscape.com.
New areas of concern include transmissions among people experiencing homelessness and severe cases in immunocompromised persons.
Agam K. Rao, MD, with the Poxvirus and Rabies Branch of the Centers for Disease Control and Prevention, updated the global picture during an annual scientific meeting on infectious diseases: As of Oct. 14, the confirmed worldwide cases number 73,288, with more than one-third of them (27,317) in the United States. Case counts in the United States, however, have been decreasing since early August.
Cases have been most commonly found in men who have sex with men (MSM), though monkeypox has also been diagnosed in cisgender and transgender women, children, and men who do not report recent sex with other men.
Shift away from White men
Dr. Rao described a demographic shift in infections from White, non-Hispanic men early on to non-Hispanic Black and Hispanic men.
“There’s a lot of emphasis right now at CDC to try to understand these spreads, whether they are household [transmission] or another contact. We know that some of the women have had sexual contact with men who were diagnosed with monkeypox,” Dr. Rao said.
In children under age 12, direct skin-to-skin contact with household members seems to be the source, she said. In adolescents, as in adults, the main source seems to be male-male consensual sex.
“And just as in adults, Black and Hispanic children have been disproportionately affected,” she said.
No sustained spread outside MSM
Dr. Rao said that so far there has been no sustained spread detected beyond the MSM community. A CDC study of inmates in Cook County Jail in Chicago at the end of September, she noted, found no secondary cases.
However, health care workers are another group that was suspected to be at higher risk given close contact with patients, although there have been only three confirmed exposures. Sharps injuries from unroofed lesions are tied to some of those confirmed or suspected cases.
“We do not recommend unroofing lesions,” she said. “We’re getting very good samples from just rigorous swabbing of the lesions.”
She said that the CDC is also monitoring “a few hundred” cases, some of them severe, among people experiencing homelessness.
“We are working to try to understand the exposures that have occurred to those individuals and whether transmission has occurred person-to-person,” Dr. Rao said.
Severe cases among immunocompromised
Also of concern are people with compromised immune systems owing to advanced HIV or organ or stem cell transplants.
Among immunocompromised persons, Dr. Rao said, “we’re seeing large necrotic lesions affecting a large percentage of body surface, lesions that continue to develop over weeks.”
Boghuma Titanji, MD, PhD, MSc, a physician-scientist at Emory University in Atlanta, and an emerging-disease specialist, addressed the difference in presentations between immunocompromised and immunocompetent patients.
She said the main distinction is the extent of the lesions. Patients with AIDS and very low CD4 counts, for instance, are presenting with more lesions and have a longer course of illness.
Dr. Rao said in an interview, “It’s really important to understand someone’s immune status and understand whether they are severely immunocompromised. If there is a concern that a person has monkeypox, also testing for HIV concurrently may be important. It could be a missed opportunity to evaluate for it, especially given the fact that these can occur together.”
Assessing the size and appearance of the lesions is important to understanding whether patients could develop severe infection, she said.
Differences from past epidemics
Dr. Titanji said the current outbreak has some differences from historic outbreaks.
The incubation period, for instance, has tended to be shorter than in previous outbreaks – now 7-10 days, with a range of 5-14 days instead of a range of up to 21 days in previous outbreaks.
There are also more cases of presentations with only single lesions, which were infrequent in past epidemics, she said.
The scope of suspected cases has also broadened, with changing clinical features.
“We have expanded the clinical descriptions to include presentations that involve isolated rectal presentation – individuals presenting solely with rectal pain as the primary manifestation of monkeypox – or presenting with a sore throat as the only manifestation,” she said.
Expanding the case definition will help identify who should be tested.
“Monkeypox is an incredible clinical mimic,” Dr. Titanji said. “The rash can really take the form of a lot of the things we encounter on a regular basis in ID. It’s important to always have a low index of suspicion to test patients when they fit the right epidemiological profile.”
Vaccine strategy has evolved
Brett Petersen, MD, MPH, captain of the U.S. Public Health Service with the CDC, said that Jynneos, licensed by the U.S. Food and Drug Administration, continues to be the primary vaccine for monkeypox. However, the strategy has changed.
Whereas the initial vaccine strategy was to administer the vaccine after known exposure, the guidance now includes vaccinating after “both known and presumed exposures, as described in the eligible populations.”
It’s now been expanded even further to include preexposure inoculations for a wide group of people at greater risk, he explained.
Early data from the CDC indicate that the Jynneos vaccine is effective.
In a report updated in September, the CDC found that among 32 U.S. jurisdictions, monkeypox incidence was much higher among at-risk, unvaccinated people for whom vaccination is recommended than among those who got the Jynneos vaccine.
“Unvaccinated people had 14 times the risk of monkeypox disease compared to people who were vaccinated,” the CDC reported.
Asked about the end goal for monkeypox, Dr. Petersen said, “Our goal should be elimination. I think that is an achievable goal, but it will depend on a lot of factors and a lot of continued public health efforts.”
Dr. Rao, Dr. Titanji, and Dr. Petersen declared no relevant financial relationships.
A version of this article first appeared on Medscape.com.
New areas of concern include transmissions among people experiencing homelessness and severe cases in immunocompromised persons.
Agam K. Rao, MD, with the Poxvirus and Rabies Branch of the Centers for Disease Control and Prevention, updated the global picture during an annual scientific meeting on infectious diseases: As of Oct. 14, the confirmed worldwide cases number 73,288, with more than one-third of them (27,317) in the United States. Case counts in the United States, however, have been decreasing since early August.
Cases have been most commonly found in men who have sex with men (MSM), though monkeypox has also been diagnosed in cisgender and transgender women, children, and men who do not report recent sex with other men.
Shift away from White men
Dr. Rao described a demographic shift in infections from White, non-Hispanic men early on to non-Hispanic Black and Hispanic men.
“There’s a lot of emphasis right now at CDC to try to understand these spreads, whether they are household [transmission] or another contact. We know that some of the women have had sexual contact with men who were diagnosed with monkeypox,” Dr. Rao said.
In children under age 12, direct skin-to-skin contact with household members seems to be the source, she said. In adolescents, as in adults, the main source seems to be male-male consensual sex.
“And just as in adults, Black and Hispanic children have been disproportionately affected,” she said.
No sustained spread outside MSM
Dr. Rao said that so far there has been no sustained spread detected beyond the MSM community. A CDC study of inmates in Cook County Jail in Chicago at the end of September, she noted, found no secondary cases.
However, health care workers are another group that was suspected to be at higher risk given close contact with patients, although there have been only three confirmed exposures. Sharps injuries from unroofed lesions are tied to some of those confirmed or suspected cases.
“We do not recommend unroofing lesions,” she said. “We’re getting very good samples from just rigorous swabbing of the lesions.”
She said that the CDC is also monitoring “a few hundred” cases, some of them severe, among people experiencing homelessness.
“We are working to try to understand the exposures that have occurred to those individuals and whether transmission has occurred person-to-person,” Dr. Rao said.
Severe cases among immunocompromised
Also of concern are people with compromised immune systems owing to advanced HIV or organ or stem cell transplants.
Among immunocompromised persons, Dr. Rao said, “we’re seeing large necrotic lesions affecting a large percentage of body surface, lesions that continue to develop over weeks.”
Boghuma Titanji, MD, PhD, MSc, a physician-scientist at Emory University in Atlanta, and an emerging-disease specialist, addressed the difference in presentations between immunocompromised and immunocompetent patients.
She said the main distinction is the extent of the lesions. Patients with AIDS and very low CD4 counts, for instance, are presenting with more lesions and have a longer course of illness.
Dr. Rao said in an interview, “It’s really important to understand someone’s immune status and understand whether they are severely immunocompromised. If there is a concern that a person has monkeypox, also testing for HIV concurrently may be important. It could be a missed opportunity to evaluate for it, especially given the fact that these can occur together.”
Assessing the size and appearance of the lesions is important to understanding whether patients could develop severe infection, she said.
Differences from past epidemics
Dr. Titanji said the current outbreak has some differences from historic outbreaks.
The incubation period, for instance, has tended to be shorter than in previous outbreaks – now 7-10 days, with a range of 5-14 days instead of a range of up to 21 days in previous outbreaks.
There are also more cases of presentations with only single lesions, which were infrequent in past epidemics, she said.
The scope of suspected cases has also broadened, with changing clinical features.
“We have expanded the clinical descriptions to include presentations that involve isolated rectal presentation – individuals presenting solely with rectal pain as the primary manifestation of monkeypox – or presenting with a sore throat as the only manifestation,” she said.
Expanding the case definition will help identify who should be tested.
“Monkeypox is an incredible clinical mimic,” Dr. Titanji said. “The rash can really take the form of a lot of the things we encounter on a regular basis in ID. It’s important to always have a low index of suspicion to test patients when they fit the right epidemiological profile.”
Vaccine strategy has evolved
Brett Petersen, MD, MPH, captain of the U.S. Public Health Service with the CDC, said that Jynneos, licensed by the U.S. Food and Drug Administration, continues to be the primary vaccine for monkeypox. However, the strategy has changed.
Whereas the initial vaccine strategy was to administer the vaccine after known exposure, the guidance now includes vaccinating after “both known and presumed exposures, as described in the eligible populations.”
It’s now been expanded even further to include preexposure inoculations for a wide group of people at greater risk, he explained.
Early data from the CDC indicate that the Jynneos vaccine is effective.
In a report updated in September, the CDC found that among 32 U.S. jurisdictions, monkeypox incidence was much higher among at-risk, unvaccinated people for whom vaccination is recommended than among those who got the Jynneos vaccine.
“Unvaccinated people had 14 times the risk of monkeypox disease compared to people who were vaccinated,” the CDC reported.
Asked about the end goal for monkeypox, Dr. Petersen said, “Our goal should be elimination. I think that is an achievable goal, but it will depend on a lot of factors and a lot of continued public health efforts.”
Dr. Rao, Dr. Titanji, and Dr. Petersen declared no relevant financial relationships.
A version of this article first appeared on Medscape.com.
FROM IDWEEK 2022
More data suggest preexisting statin use improves COVID outcomes
Compared with patients who didn’t take statins, statin users had better health outcomes. For those who used these medications, the researchers saw lower mortality, lower clinical severity, and shorter hospital stays, aligning with previous observational studies, said lead author Ettore Crimi, MD, of the University of Central Florida, Orlando, and colleagues in their abstract, which was part of the agenda for the Anesthesiology annual meeting.
They attributed these clinical improvements to the pleiotropic – non–cholesterol lowering – effects of statins.
“[These] benefits of statins have been reported since the 1990s,” Dr. Crimi said in an interview. “Statin treatment has been associated with a marked reduction of markers of inflammation, such as erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP), interleukin-6 (IL-6), ferritin, and white blood cell count, among others.”
He noted that these effects have been studied in an array of conditions, including cancer, autoimmune diseases, chronic inflammatory disease, and in the perioperative setting, and with infectious diseases, including COVID-19.
In those previous studies, “preexisting statin use was protective among hospitalized COVID-19 patients, but a large, multicenter cohort study has not been reported in the United States,” Dr. Crimi and his colleagues wrote in their abstract.
To address this knowledge gap, they turned to electronic medical records from 38,875 patients hospitalized with COVID-19 from January to September 2020. Almost one-third of the population (n = 11,533) were using statins prior to hospitalization, while the remainder (n = 27,342) were nonusers.
The primary outcome was all-cause mortality. Secondary outcomes included death from COVID-19, along with a variety of severe complications. While the analysis did account for a range of potentially confounding variables, the effects of different SARS-CoV-2 variants and new therapeutics were not considered. Vaccines were not yet available at the time the data were collected.
Statin users had a 31% lower rate of all-cause mortality (odds ratio, 0.69; 95% confidence interval, 0.64-0.75; P = .001) and a 37% reduced rate of death from COVID-19 (OR, 0.63; 95% CI, 0.58-0.69; P = .001).
A litany of other secondary variables also favored statin users, including reduced rates of discharge to hospice (OR, 0.79), ICU admission (OR, 0.69), severe acute respiratory distress syndrome (ARDs; OR, 0.72), critical ARDs (OR, 0.57), mechanical ventilation (OR, 0.60), severe sepsis with septic shock (OR, 0.66), and thrombosis (OR, 0.46). Statin users also had, on average, shorter hospital stays and briefer mechanical ventilation.
“Our study showed a strong association between preexisting statin use and reduced mortality and morbidity rates in hospitalized COVID-19 patients,” the investigators concluded. “Pleiotropic benefits of statins could be repurposed for COVID-19 illness.”
Prospective studies needed before practice changes
How to best use statins against COVID-19, if at all, remains unclear, Dr. Crimi said, as initiation upon infection has generated mixed results in other studies, possibly because of statin pharmacodynamics. Cholesterol normalization can take about 6 weeks, so other benefits may track a similar timeline.
“The delayed onset of statins’ pleiotropic effects may likely fail to keep pace with the rapidly progressive, devastating COVID-19 disease,” Dr. Crimi said. “Therefore, initiating statins for an acute disease may not be an ideal first-line treatment.”
Stronger data are on the horizon, he added, noting that 19 federally funded prospective trials are underway to better understand the relationship between statins and COVID-19.
Daniel Rader, MD, of the University of Pennsylvania, Philadelphia, said the present findings are “not especially notable” because they “mostly confirm previous studies, but in a large U.S. cohort.”
Dr. Rader, who wrote about the potential repurposing of statins for COVID-19 back in the first year of the pandemic (Cell Metab. 2020 Aug 4;32[2]:145-7), agreed with the investigators that recommending changes to clinical practice would be imprudent until randomized controlled data confirm the benefits of initiating statins in patients with active COVID-19.
“More research on the impact of cellular cholesterol metabolism on SARS-CoV-2 infection of cells and generation of inflammation would also be of interest,” he added.
The investigators disclosed no competing interests. Dr. Rader disclosed relationships with Novartis, Pfizer, Verve, and others.
Compared with patients who didn’t take statins, statin users had better health outcomes. For those who used these medications, the researchers saw lower mortality, lower clinical severity, and shorter hospital stays, aligning with previous observational studies, said lead author Ettore Crimi, MD, of the University of Central Florida, Orlando, and colleagues in their abstract, which was part of the agenda for the Anesthesiology annual meeting.
They attributed these clinical improvements to the pleiotropic – non–cholesterol lowering – effects of statins.
“[These] benefits of statins have been reported since the 1990s,” Dr. Crimi said in an interview. “Statin treatment has been associated with a marked reduction of markers of inflammation, such as erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP), interleukin-6 (IL-6), ferritin, and white blood cell count, among others.”
He noted that these effects have been studied in an array of conditions, including cancer, autoimmune diseases, chronic inflammatory disease, and in the perioperative setting, and with infectious diseases, including COVID-19.
In those previous studies, “preexisting statin use was protective among hospitalized COVID-19 patients, but a large, multicenter cohort study has not been reported in the United States,” Dr. Crimi and his colleagues wrote in their abstract.
To address this knowledge gap, they turned to electronic medical records from 38,875 patients hospitalized with COVID-19 from January to September 2020. Almost one-third of the population (n = 11,533) were using statins prior to hospitalization, while the remainder (n = 27,342) were nonusers.
The primary outcome was all-cause mortality. Secondary outcomes included death from COVID-19, along with a variety of severe complications. While the analysis did account for a range of potentially confounding variables, the effects of different SARS-CoV-2 variants and new therapeutics were not considered. Vaccines were not yet available at the time the data were collected.
Statin users had a 31% lower rate of all-cause mortality (odds ratio, 0.69; 95% confidence interval, 0.64-0.75; P = .001) and a 37% reduced rate of death from COVID-19 (OR, 0.63; 95% CI, 0.58-0.69; P = .001).
A litany of other secondary variables also favored statin users, including reduced rates of discharge to hospice (OR, 0.79), ICU admission (OR, 0.69), severe acute respiratory distress syndrome (ARDs; OR, 0.72), critical ARDs (OR, 0.57), mechanical ventilation (OR, 0.60), severe sepsis with septic shock (OR, 0.66), and thrombosis (OR, 0.46). Statin users also had, on average, shorter hospital stays and briefer mechanical ventilation.
“Our study showed a strong association between preexisting statin use and reduced mortality and morbidity rates in hospitalized COVID-19 patients,” the investigators concluded. “Pleiotropic benefits of statins could be repurposed for COVID-19 illness.”
Prospective studies needed before practice changes
How to best use statins against COVID-19, if at all, remains unclear, Dr. Crimi said, as initiation upon infection has generated mixed results in other studies, possibly because of statin pharmacodynamics. Cholesterol normalization can take about 6 weeks, so other benefits may track a similar timeline.
“The delayed onset of statins’ pleiotropic effects may likely fail to keep pace with the rapidly progressive, devastating COVID-19 disease,” Dr. Crimi said. “Therefore, initiating statins for an acute disease may not be an ideal first-line treatment.”
Stronger data are on the horizon, he added, noting that 19 federally funded prospective trials are underway to better understand the relationship between statins and COVID-19.
Daniel Rader, MD, of the University of Pennsylvania, Philadelphia, said the present findings are “not especially notable” because they “mostly confirm previous studies, but in a large U.S. cohort.”
Dr. Rader, who wrote about the potential repurposing of statins for COVID-19 back in the first year of the pandemic (Cell Metab. 2020 Aug 4;32[2]:145-7), agreed with the investigators that recommending changes to clinical practice would be imprudent until randomized controlled data confirm the benefits of initiating statins in patients with active COVID-19.
“More research on the impact of cellular cholesterol metabolism on SARS-CoV-2 infection of cells and generation of inflammation would also be of interest,” he added.
The investigators disclosed no competing interests. Dr. Rader disclosed relationships with Novartis, Pfizer, Verve, and others.
Compared with patients who didn’t take statins, statin users had better health outcomes. For those who used these medications, the researchers saw lower mortality, lower clinical severity, and shorter hospital stays, aligning with previous observational studies, said lead author Ettore Crimi, MD, of the University of Central Florida, Orlando, and colleagues in their abstract, which was part of the agenda for the Anesthesiology annual meeting.
They attributed these clinical improvements to the pleiotropic – non–cholesterol lowering – effects of statins.
“[These] benefits of statins have been reported since the 1990s,” Dr. Crimi said in an interview. “Statin treatment has been associated with a marked reduction of markers of inflammation, such as erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP), interleukin-6 (IL-6), ferritin, and white blood cell count, among others.”
He noted that these effects have been studied in an array of conditions, including cancer, autoimmune diseases, chronic inflammatory disease, and in the perioperative setting, and with infectious diseases, including COVID-19.
In those previous studies, “preexisting statin use was protective among hospitalized COVID-19 patients, but a large, multicenter cohort study has not been reported in the United States,” Dr. Crimi and his colleagues wrote in their abstract.
To address this knowledge gap, they turned to electronic medical records from 38,875 patients hospitalized with COVID-19 from January to September 2020. Almost one-third of the population (n = 11,533) were using statins prior to hospitalization, while the remainder (n = 27,342) were nonusers.
The primary outcome was all-cause mortality. Secondary outcomes included death from COVID-19, along with a variety of severe complications. While the analysis did account for a range of potentially confounding variables, the effects of different SARS-CoV-2 variants and new therapeutics were not considered. Vaccines were not yet available at the time the data were collected.
Statin users had a 31% lower rate of all-cause mortality (odds ratio, 0.69; 95% confidence interval, 0.64-0.75; P = .001) and a 37% reduced rate of death from COVID-19 (OR, 0.63; 95% CI, 0.58-0.69; P = .001).
A litany of other secondary variables also favored statin users, including reduced rates of discharge to hospice (OR, 0.79), ICU admission (OR, 0.69), severe acute respiratory distress syndrome (ARDs; OR, 0.72), critical ARDs (OR, 0.57), mechanical ventilation (OR, 0.60), severe sepsis with septic shock (OR, 0.66), and thrombosis (OR, 0.46). Statin users also had, on average, shorter hospital stays and briefer mechanical ventilation.
“Our study showed a strong association between preexisting statin use and reduced mortality and morbidity rates in hospitalized COVID-19 patients,” the investigators concluded. “Pleiotropic benefits of statins could be repurposed for COVID-19 illness.”
Prospective studies needed before practice changes
How to best use statins against COVID-19, if at all, remains unclear, Dr. Crimi said, as initiation upon infection has generated mixed results in other studies, possibly because of statin pharmacodynamics. Cholesterol normalization can take about 6 weeks, so other benefits may track a similar timeline.
“The delayed onset of statins’ pleiotropic effects may likely fail to keep pace with the rapidly progressive, devastating COVID-19 disease,” Dr. Crimi said. “Therefore, initiating statins for an acute disease may not be an ideal first-line treatment.”
Stronger data are on the horizon, he added, noting that 19 federally funded prospective trials are underway to better understand the relationship between statins and COVID-19.
Daniel Rader, MD, of the University of Pennsylvania, Philadelphia, said the present findings are “not especially notable” because they “mostly confirm previous studies, but in a large U.S. cohort.”
Dr. Rader, who wrote about the potential repurposing of statins for COVID-19 back in the first year of the pandemic (Cell Metab. 2020 Aug 4;32[2]:145-7), agreed with the investigators that recommending changes to clinical practice would be imprudent until randomized controlled data confirm the benefits of initiating statins in patients with active COVID-19.
“More research on the impact of cellular cholesterol metabolism on SARS-CoV-2 infection of cells and generation of inflammation would also be of interest,” he added.
The investigators disclosed no competing interests. Dr. Rader disclosed relationships with Novartis, Pfizer, Verve, and others.
FROM ANESTHESIOLOGY 2022
C. diff recurrence drops with highly targeted ridinilazole
WASHINGTON – (CDI), according to phase 3 trial results presented at an annual scientific meeting on infectious diseases.
According to the Centers for Disease Control and Prevention, CDI is the top cause of antibiotic-associated diarrhea and one of the most common health care–associated infections in the United States. About 200,000 people in the United States are infected with C. difficile every year in the hospital or clinical care setting.
Most infections are currently treated with vancomycin. Although vancomycin has been shown to be more than 80% effective, it has been linked with recurrence rates ranging from 20% to 30% and interferes with the protective role of the gut microbiome against infection. The current study compared ridinilazole with vancomycin.
Results of the global, double-blinded, randomized trial were presented by Pablo C. Okhuysen, MD, professor of infectious disease at the University of Texas MD Anderson Cancer Center, Houston.
Participants with CDI received a 10-day course of ridinilazole 200 mg twice a day plus placebo or vancomycin 125 mg four times a day. The primary endpoint was sustained clinical response, defined as a clinical response with no recurrent CDI through 30 days after the end of treatment. Recurrent CDI was defined as a new episode of diarrhea with confirmed positive free toxin test requiring additional therapy.
Of the 759 patients enrolled, 745 were included in the modified intention-to-treat population (ridinilazole, n = 370; vancomycin, n = 375). Ridinilazole achieved a numerically higher rate of sustained clinical response than vancomycin (73.0% vs. 70.7%; P = .467), although the difference was not significant. Ridinilazole also resulted in a significant reduction in recurrence rate (8.1% vs. 17.3%; P < .001).
Ridinilazole’s effect was most notable in a subgroup of patients who were not receiving other antibiotics at time of enrollment – about 70% of participants. In that subgroup, the recurrence rate was 6.7% with ridinilazole versus 16.5% with vancomycin (P < .001), Dr. Okhuysen reported.
“That resulted in a relative risk reduction of 60%,” Dr. Okhuysen told this news organization.
Dr. Okhuysen pointed out that there are currently very few treatment options for CDI other than vancomycin.
“We need new agents to treat C. difficile,” he said, “particularly for those at risk of recurrence. In our study, we found that those exposed to vancomycin had very dramatic shifts in their microbiome.”
Vancomycin depletes the gut microbiome, which decreases the conversion of primary acids to secondary bile acids, the researchers noted.
“A dysbiotic microbiome is fertile ground for C. difficile to grow,” Dr. Okhuysen said. Ridinilazole does not disrupt the microbiome, he added.
Ridinilazole was well-tolerated in the study. The proportion of patients with at least one treatment-emergent adverse effect was 36.4% versus 35.5%, respectively, in the ridinilazole and vancomycin groups. And the proportion who stopped treatment because of treatment-related side effects was 0.8% versus 2.9%.
Mary Hayden, MD, pathology director in the division of infectious diseases at Rush University Medical Center, Chicago, who was not involved with the study, said the results are encouraging as “alternative agents or strategies to prevent recurrence are important to reduce CDI morbidity.”
Its double-blind, randomized, multicenter design strengthens the findings, she explained, adding that “the secondary outcomes of higher concentrations of secondary bile acids and microbiota diversity and composition lend biological plausibility.”
Ridinilazole’s narrow spectrum of activity “should result in less disruption of the colonic microbiota, which has theoretical benefit for both reducing CDI recurrence and for reducing risk of acquisition of multidrug-resistant organisms,” Dr. Hayden said.
Dr. Okhuysen shared that the team is in talks with the Food and Drug Administration and is preparing a manuscript for publication.
The study was supported by Summit Pharmaceuticals and funded by the Biomedical and Advanced Research and Development Authority. Dr. Okhuysen has reported receiving research support from and/or consulting for Summit, Merck, Deinove, Melinta, and Ferring Pharmaceuticals. Some of the coauthors have financial relationships with or received research support from Summit. Dr. Hayden has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
WASHINGTON – (CDI), according to phase 3 trial results presented at an annual scientific meeting on infectious diseases.
According to the Centers for Disease Control and Prevention, CDI is the top cause of antibiotic-associated diarrhea and one of the most common health care–associated infections in the United States. About 200,000 people in the United States are infected with C. difficile every year in the hospital or clinical care setting.
Most infections are currently treated with vancomycin. Although vancomycin has been shown to be more than 80% effective, it has been linked with recurrence rates ranging from 20% to 30% and interferes with the protective role of the gut microbiome against infection. The current study compared ridinilazole with vancomycin.
Results of the global, double-blinded, randomized trial were presented by Pablo C. Okhuysen, MD, professor of infectious disease at the University of Texas MD Anderson Cancer Center, Houston.
Participants with CDI received a 10-day course of ridinilazole 200 mg twice a day plus placebo or vancomycin 125 mg four times a day. The primary endpoint was sustained clinical response, defined as a clinical response with no recurrent CDI through 30 days after the end of treatment. Recurrent CDI was defined as a new episode of diarrhea with confirmed positive free toxin test requiring additional therapy.
Of the 759 patients enrolled, 745 were included in the modified intention-to-treat population (ridinilazole, n = 370; vancomycin, n = 375). Ridinilazole achieved a numerically higher rate of sustained clinical response than vancomycin (73.0% vs. 70.7%; P = .467), although the difference was not significant. Ridinilazole also resulted in a significant reduction in recurrence rate (8.1% vs. 17.3%; P < .001).
Ridinilazole’s effect was most notable in a subgroup of patients who were not receiving other antibiotics at time of enrollment – about 70% of participants. In that subgroup, the recurrence rate was 6.7% with ridinilazole versus 16.5% with vancomycin (P < .001), Dr. Okhuysen reported.
“That resulted in a relative risk reduction of 60%,” Dr. Okhuysen told this news organization.
Dr. Okhuysen pointed out that there are currently very few treatment options for CDI other than vancomycin.
“We need new agents to treat C. difficile,” he said, “particularly for those at risk of recurrence. In our study, we found that those exposed to vancomycin had very dramatic shifts in their microbiome.”
Vancomycin depletes the gut microbiome, which decreases the conversion of primary acids to secondary bile acids, the researchers noted.
“A dysbiotic microbiome is fertile ground for C. difficile to grow,” Dr. Okhuysen said. Ridinilazole does not disrupt the microbiome, he added.
Ridinilazole was well-tolerated in the study. The proportion of patients with at least one treatment-emergent adverse effect was 36.4% versus 35.5%, respectively, in the ridinilazole and vancomycin groups. And the proportion who stopped treatment because of treatment-related side effects was 0.8% versus 2.9%.
Mary Hayden, MD, pathology director in the division of infectious diseases at Rush University Medical Center, Chicago, who was not involved with the study, said the results are encouraging as “alternative agents or strategies to prevent recurrence are important to reduce CDI morbidity.”
Its double-blind, randomized, multicenter design strengthens the findings, she explained, adding that “the secondary outcomes of higher concentrations of secondary bile acids and microbiota diversity and composition lend biological plausibility.”
Ridinilazole’s narrow spectrum of activity “should result in less disruption of the colonic microbiota, which has theoretical benefit for both reducing CDI recurrence and for reducing risk of acquisition of multidrug-resistant organisms,” Dr. Hayden said.
Dr. Okhuysen shared that the team is in talks with the Food and Drug Administration and is preparing a manuscript for publication.
The study was supported by Summit Pharmaceuticals and funded by the Biomedical and Advanced Research and Development Authority. Dr. Okhuysen has reported receiving research support from and/or consulting for Summit, Merck, Deinove, Melinta, and Ferring Pharmaceuticals. Some of the coauthors have financial relationships with or received research support from Summit. Dr. Hayden has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
WASHINGTON – (CDI), according to phase 3 trial results presented at an annual scientific meeting on infectious diseases.
According to the Centers for Disease Control and Prevention, CDI is the top cause of antibiotic-associated diarrhea and one of the most common health care–associated infections in the United States. About 200,000 people in the United States are infected with C. difficile every year in the hospital or clinical care setting.
Most infections are currently treated with vancomycin. Although vancomycin has been shown to be more than 80% effective, it has been linked with recurrence rates ranging from 20% to 30% and interferes with the protective role of the gut microbiome against infection. The current study compared ridinilazole with vancomycin.
Results of the global, double-blinded, randomized trial were presented by Pablo C. Okhuysen, MD, professor of infectious disease at the University of Texas MD Anderson Cancer Center, Houston.
Participants with CDI received a 10-day course of ridinilazole 200 mg twice a day plus placebo or vancomycin 125 mg four times a day. The primary endpoint was sustained clinical response, defined as a clinical response with no recurrent CDI through 30 days after the end of treatment. Recurrent CDI was defined as a new episode of diarrhea with confirmed positive free toxin test requiring additional therapy.
Of the 759 patients enrolled, 745 were included in the modified intention-to-treat population (ridinilazole, n = 370; vancomycin, n = 375). Ridinilazole achieved a numerically higher rate of sustained clinical response than vancomycin (73.0% vs. 70.7%; P = .467), although the difference was not significant. Ridinilazole also resulted in a significant reduction in recurrence rate (8.1% vs. 17.3%; P < .001).
Ridinilazole’s effect was most notable in a subgroup of patients who were not receiving other antibiotics at time of enrollment – about 70% of participants. In that subgroup, the recurrence rate was 6.7% with ridinilazole versus 16.5% with vancomycin (P < .001), Dr. Okhuysen reported.
“That resulted in a relative risk reduction of 60%,” Dr. Okhuysen told this news organization.
Dr. Okhuysen pointed out that there are currently very few treatment options for CDI other than vancomycin.
“We need new agents to treat C. difficile,” he said, “particularly for those at risk of recurrence. In our study, we found that those exposed to vancomycin had very dramatic shifts in their microbiome.”
Vancomycin depletes the gut microbiome, which decreases the conversion of primary acids to secondary bile acids, the researchers noted.
“A dysbiotic microbiome is fertile ground for C. difficile to grow,” Dr. Okhuysen said. Ridinilazole does not disrupt the microbiome, he added.
Ridinilazole was well-tolerated in the study. The proportion of patients with at least one treatment-emergent adverse effect was 36.4% versus 35.5%, respectively, in the ridinilazole and vancomycin groups. And the proportion who stopped treatment because of treatment-related side effects was 0.8% versus 2.9%.
Mary Hayden, MD, pathology director in the division of infectious diseases at Rush University Medical Center, Chicago, who was not involved with the study, said the results are encouraging as “alternative agents or strategies to prevent recurrence are important to reduce CDI morbidity.”
Its double-blind, randomized, multicenter design strengthens the findings, she explained, adding that “the secondary outcomes of higher concentrations of secondary bile acids and microbiota diversity and composition lend biological plausibility.”
Ridinilazole’s narrow spectrum of activity “should result in less disruption of the colonic microbiota, which has theoretical benefit for both reducing CDI recurrence and for reducing risk of acquisition of multidrug-resistant organisms,” Dr. Hayden said.
Dr. Okhuysen shared that the team is in talks with the Food and Drug Administration and is preparing a manuscript for publication.
The study was supported by Summit Pharmaceuticals and funded by the Biomedical and Advanced Research and Development Authority. Dr. Okhuysen has reported receiving research support from and/or consulting for Summit, Merck, Deinove, Melinta, and Ferring Pharmaceuticals. Some of the coauthors have financial relationships with or received research support from Summit. Dr. Hayden has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
AT IDWEEK 2022
Iron deficiency may protect against bacterial pneumonia
Patients with iron deficiency anemia who developed bacterial pneumonia showed improved outcomes compared to those without iron deficiency anemia, based on data from more than 450,000 individuals in the National Inpatient Sample.
Iron deficiency is the most common nutritional deficiency worldwide, and can lead to anemia, but iron also has been identified as essential to the survival and growth of pathogenic organisms, Mubarak Yusuf, MD, said in a presentation at the annual meeting of the American College of Chest Physicians (CHEST).
However, the specific impact of iron deficiency anemia (IDA) on outcomes in patients hospitalized with acute bacterial infections has not been explored, said Dr. Yusuf, a third-year internal medicine resident at Lincoln Medical Center in New York.
In the study, Dr. Yusuf and colleagues reviewed data from the Nationwide Inpatient Sample (NIS) Database for 2016-2019. They identified 452,040 adults aged 18 or older with a primary diagnosis of bacterial pneumonia based on ICD-10 codes. Patients with a principal diagnosis other than bacterial pneumonia were excluded.
Of these, 5.5% had a secondary diagnosis of IDA. The mean age of the study population was similar between the IDA and non-IDA groups (68 years) and racial distribution was similar, with a White majority of approximately 77%. Slightly more patients in the IDA group were women (58.5% vs. 51.6%) and this difference was statistically significant (P < .00001). Most of the patients (94.6%) in the IDA group had at least three comorbidities, as did 78.1% of the non-IDA group.
The primary outcome was mortality, and the overall mortality in the study population was 2.89%. Although the mortality percentage was higher in the IDA group compared to the non-IDA group (3.25% vs. 2.87%), “when we adjusted for confounders, we noticed a decreased odds of mortality in the IDA group” with an adjusted odds ratio of 0.74 (P = .001), Dr. Yusuf said.
In addition, secondary outcomes of septic shock, acute respiratory failure, and cardiac arrest were lower in the IDA group in a regression analysis, with adjusted odds ratios of 0.71, 0.78, and 0.57, respectively.
The mean length of stay was 0.3 days higher in the IDA group, and the researchers found a nonsignificant increase in total hospital costs of $402.5 for IDA patients compared to those without IDA, said Dr. Yusuf.
The take-home message from the study is actually a question to the clinician, Dr. Yusuf said. “Should you consider a delay in treatment [of iron deficiency anemia] if the patient is not symptomatic?” he asked.
More research is needed to investigate the improved outcomes in the iron deficient population, but the large sample size supports an association that is worth exploring, he concluded.
“The findings of this research may suggest a protective effect of iron deficiency in acute bacterial pneumonia,” Dr. Yusuf said in a press release accompanying the meeting presentation. “More research is needed to elucidate the improved outcomes found in this population, but this research may lead clinicians to consider a delay in treatment of nonsymptomatic iron deficiency in acute bacterial infection,” he added.
The study received no outside funding. The researchers had no financial conflicts to disclose.
Patients with iron deficiency anemia who developed bacterial pneumonia showed improved outcomes compared to those without iron deficiency anemia, based on data from more than 450,000 individuals in the National Inpatient Sample.
Iron deficiency is the most common nutritional deficiency worldwide, and can lead to anemia, but iron also has been identified as essential to the survival and growth of pathogenic organisms, Mubarak Yusuf, MD, said in a presentation at the annual meeting of the American College of Chest Physicians (CHEST).
However, the specific impact of iron deficiency anemia (IDA) on outcomes in patients hospitalized with acute bacterial infections has not been explored, said Dr. Yusuf, a third-year internal medicine resident at Lincoln Medical Center in New York.
In the study, Dr. Yusuf and colleagues reviewed data from the Nationwide Inpatient Sample (NIS) Database for 2016-2019. They identified 452,040 adults aged 18 or older with a primary diagnosis of bacterial pneumonia based on ICD-10 codes. Patients with a principal diagnosis other than bacterial pneumonia were excluded.
Of these, 5.5% had a secondary diagnosis of IDA. The mean age of the study population was similar between the IDA and non-IDA groups (68 years) and racial distribution was similar, with a White majority of approximately 77%. Slightly more patients in the IDA group were women (58.5% vs. 51.6%) and this difference was statistically significant (P < .00001). Most of the patients (94.6%) in the IDA group had at least three comorbidities, as did 78.1% of the non-IDA group.
The primary outcome was mortality, and the overall mortality in the study population was 2.89%. Although the mortality percentage was higher in the IDA group compared to the non-IDA group (3.25% vs. 2.87%), “when we adjusted for confounders, we noticed a decreased odds of mortality in the IDA group” with an adjusted odds ratio of 0.74 (P = .001), Dr. Yusuf said.
In addition, secondary outcomes of septic shock, acute respiratory failure, and cardiac arrest were lower in the IDA group in a regression analysis, with adjusted odds ratios of 0.71, 0.78, and 0.57, respectively.
The mean length of stay was 0.3 days higher in the IDA group, and the researchers found a nonsignificant increase in total hospital costs of $402.5 for IDA patients compared to those without IDA, said Dr. Yusuf.
The take-home message from the study is actually a question to the clinician, Dr. Yusuf said. “Should you consider a delay in treatment [of iron deficiency anemia] if the patient is not symptomatic?” he asked.
More research is needed to investigate the improved outcomes in the iron deficient population, but the large sample size supports an association that is worth exploring, he concluded.
“The findings of this research may suggest a protective effect of iron deficiency in acute bacterial pneumonia,” Dr. Yusuf said in a press release accompanying the meeting presentation. “More research is needed to elucidate the improved outcomes found in this population, but this research may lead clinicians to consider a delay in treatment of nonsymptomatic iron deficiency in acute bacterial infection,” he added.
The study received no outside funding. The researchers had no financial conflicts to disclose.
Patients with iron deficiency anemia who developed bacterial pneumonia showed improved outcomes compared to those without iron deficiency anemia, based on data from more than 450,000 individuals in the National Inpatient Sample.
Iron deficiency is the most common nutritional deficiency worldwide, and can lead to anemia, but iron also has been identified as essential to the survival and growth of pathogenic organisms, Mubarak Yusuf, MD, said in a presentation at the annual meeting of the American College of Chest Physicians (CHEST).
However, the specific impact of iron deficiency anemia (IDA) on outcomes in patients hospitalized with acute bacterial infections has not been explored, said Dr. Yusuf, a third-year internal medicine resident at Lincoln Medical Center in New York.
In the study, Dr. Yusuf and colleagues reviewed data from the Nationwide Inpatient Sample (NIS) Database for 2016-2019. They identified 452,040 adults aged 18 or older with a primary diagnosis of bacterial pneumonia based on ICD-10 codes. Patients with a principal diagnosis other than bacterial pneumonia were excluded.
Of these, 5.5% had a secondary diagnosis of IDA. The mean age of the study population was similar between the IDA and non-IDA groups (68 years) and racial distribution was similar, with a White majority of approximately 77%. Slightly more patients in the IDA group were women (58.5% vs. 51.6%) and this difference was statistically significant (P < .00001). Most of the patients (94.6%) in the IDA group had at least three comorbidities, as did 78.1% of the non-IDA group.
The primary outcome was mortality, and the overall mortality in the study population was 2.89%. Although the mortality percentage was higher in the IDA group compared to the non-IDA group (3.25% vs. 2.87%), “when we adjusted for confounders, we noticed a decreased odds of mortality in the IDA group” with an adjusted odds ratio of 0.74 (P = .001), Dr. Yusuf said.
In addition, secondary outcomes of septic shock, acute respiratory failure, and cardiac arrest were lower in the IDA group in a regression analysis, with adjusted odds ratios of 0.71, 0.78, and 0.57, respectively.
The mean length of stay was 0.3 days higher in the IDA group, and the researchers found a nonsignificant increase in total hospital costs of $402.5 for IDA patients compared to those without IDA, said Dr. Yusuf.
The take-home message from the study is actually a question to the clinician, Dr. Yusuf said. “Should you consider a delay in treatment [of iron deficiency anemia] if the patient is not symptomatic?” he asked.
More research is needed to investigate the improved outcomes in the iron deficient population, but the large sample size supports an association that is worth exploring, he concluded.
“The findings of this research may suggest a protective effect of iron deficiency in acute bacterial pneumonia,” Dr. Yusuf said in a press release accompanying the meeting presentation. “More research is needed to elucidate the improved outcomes found in this population, but this research may lead clinicians to consider a delay in treatment of nonsymptomatic iron deficiency in acute bacterial infection,” he added.
The study received no outside funding. The researchers had no financial conflicts to disclose.
FROM CHEST 2022
People of color more likely to be hospitalized for influenza, CDC report finds
Black Americans are 80% more likely to be hospitalized for the flu, compared with White Americans, according to new federal data.
Black, Hispanic, and American Indian/Alaska Native (AI/AN) adults in the United States also have had lower influenza vaccination rates, compared with their White counterparts, since 2010, researchers at the Centers for Disease Control and Prevention (CDC) revealed in a report.
The inequalities are the result of barriers to care, distrust of the medical system, and misinformation, the report said.
“We have many of the tools we need to address inequities and flu vaccination coverage and outcomes,” said CDC Acting Principal Deputy Director Debra Houry, MD, MPH, in a press call; “however, we must acknowledge that inequities in access to care continue to exist. To improve vaccine uptake, we must address the root causes of these ongoing disparities.”
The CDC has already reported early increases in flu activity in the United States, with the highest activity in the southeastern and south-central parts of the country. Experts also warn of a potentially more severe influenza season than in the previous 2 years. CDC officials emphasized that vaccination is the best protection against severe illness, hospitalization, and death from the flu. “Everyone should get vaccinated against flu today and encourage others and their community to get a flu vaccine for the best protection against flu this fall and winter,” Dr. Houry said.
In the recent report on disparities by community published October 18 in CDC Vital Signs, researchers looked at hospitalization rates from 2009 to 2022 and vaccination rates from 2010 to 2022 based on race and ethnicity using two national databases, the Influenza-Associated Hospitalization Surveillance Network and the Behavioral Risk Factor Surveillance System. All individuals included in the analysis were aged 18 years or older, and the 2020-2021 flu season was excluded from the analysis because of insufficient data.
Compared with those for White adults, hospitalization rates were 80% higher for Black adults, 30% higher for Hispanic adults, and 20% higher for AI/AN adults. While flu vaccination rates were similar in White and Asian adults (about 54%), coverage was lower in Black (42%), Hispanic (38%), AI/AN (41%), and other/multiracial (43%) adults. This disparity persisted even among individuals who had medical insurance, a personal health care provider, and a routine checkup within the last year.
Carla Black, PhD, MPH, an epidemiologist at the CDC’s Immunization Services Division, said during the press call. While flu vaccines may not always prevent infection, people who do get sick after being vaccinated tend to have better outcomes, she added. The report noted that building trust, increasing access to vaccination services, and combating misinformation are important steps to increasing vaccine coverage in minority groups.
While social distancing measures such as masking have made it difficult for the flu to spread, the relaxation of these safety measures could also lead to higher case counts. “We’ve had two mild flu seasons, and this means we might be ripe for a severe season,” Dr. Black said. “People haven’t had natural disease in 2 years, so there’s less natural immunity out there. People are going back to work. People are traveling again. All of these factors could contribute to us having a more severe flu season.”
A version of this article first appeared on Medscape.com.
Black Americans are 80% more likely to be hospitalized for the flu, compared with White Americans, according to new federal data.
Black, Hispanic, and American Indian/Alaska Native (AI/AN) adults in the United States also have had lower influenza vaccination rates, compared with their White counterparts, since 2010, researchers at the Centers for Disease Control and Prevention (CDC) revealed in a report.
The inequalities are the result of barriers to care, distrust of the medical system, and misinformation, the report said.
“We have many of the tools we need to address inequities and flu vaccination coverage and outcomes,” said CDC Acting Principal Deputy Director Debra Houry, MD, MPH, in a press call; “however, we must acknowledge that inequities in access to care continue to exist. To improve vaccine uptake, we must address the root causes of these ongoing disparities.”
The CDC has already reported early increases in flu activity in the United States, with the highest activity in the southeastern and south-central parts of the country. Experts also warn of a potentially more severe influenza season than in the previous 2 years. CDC officials emphasized that vaccination is the best protection against severe illness, hospitalization, and death from the flu. “Everyone should get vaccinated against flu today and encourage others and their community to get a flu vaccine for the best protection against flu this fall and winter,” Dr. Houry said.
In the recent report on disparities by community published October 18 in CDC Vital Signs, researchers looked at hospitalization rates from 2009 to 2022 and vaccination rates from 2010 to 2022 based on race and ethnicity using two national databases, the Influenza-Associated Hospitalization Surveillance Network and the Behavioral Risk Factor Surveillance System. All individuals included in the analysis were aged 18 years or older, and the 2020-2021 flu season was excluded from the analysis because of insufficient data.
Compared with those for White adults, hospitalization rates were 80% higher for Black adults, 30% higher for Hispanic adults, and 20% higher for AI/AN adults. While flu vaccination rates were similar in White and Asian adults (about 54%), coverage was lower in Black (42%), Hispanic (38%), AI/AN (41%), and other/multiracial (43%) adults. This disparity persisted even among individuals who had medical insurance, a personal health care provider, and a routine checkup within the last year.
Carla Black, PhD, MPH, an epidemiologist at the CDC’s Immunization Services Division, said during the press call. While flu vaccines may not always prevent infection, people who do get sick after being vaccinated tend to have better outcomes, she added. The report noted that building trust, increasing access to vaccination services, and combating misinformation are important steps to increasing vaccine coverage in minority groups.
While social distancing measures such as masking have made it difficult for the flu to spread, the relaxation of these safety measures could also lead to higher case counts. “We’ve had two mild flu seasons, and this means we might be ripe for a severe season,” Dr. Black said. “People haven’t had natural disease in 2 years, so there’s less natural immunity out there. People are going back to work. People are traveling again. All of these factors could contribute to us having a more severe flu season.”
A version of this article first appeared on Medscape.com.
Black Americans are 80% more likely to be hospitalized for the flu, compared with White Americans, according to new federal data.
Black, Hispanic, and American Indian/Alaska Native (AI/AN) adults in the United States also have had lower influenza vaccination rates, compared with their White counterparts, since 2010, researchers at the Centers for Disease Control and Prevention (CDC) revealed in a report.
The inequalities are the result of barriers to care, distrust of the medical system, and misinformation, the report said.
“We have many of the tools we need to address inequities and flu vaccination coverage and outcomes,” said CDC Acting Principal Deputy Director Debra Houry, MD, MPH, in a press call; “however, we must acknowledge that inequities in access to care continue to exist. To improve vaccine uptake, we must address the root causes of these ongoing disparities.”
The CDC has already reported early increases in flu activity in the United States, with the highest activity in the southeastern and south-central parts of the country. Experts also warn of a potentially more severe influenza season than in the previous 2 years. CDC officials emphasized that vaccination is the best protection against severe illness, hospitalization, and death from the flu. “Everyone should get vaccinated against flu today and encourage others and their community to get a flu vaccine for the best protection against flu this fall and winter,” Dr. Houry said.
In the recent report on disparities by community published October 18 in CDC Vital Signs, researchers looked at hospitalization rates from 2009 to 2022 and vaccination rates from 2010 to 2022 based on race and ethnicity using two national databases, the Influenza-Associated Hospitalization Surveillance Network and the Behavioral Risk Factor Surveillance System. All individuals included in the analysis were aged 18 years or older, and the 2020-2021 flu season was excluded from the analysis because of insufficient data.
Compared with those for White adults, hospitalization rates were 80% higher for Black adults, 30% higher for Hispanic adults, and 20% higher for AI/AN adults. While flu vaccination rates were similar in White and Asian adults (about 54%), coverage was lower in Black (42%), Hispanic (38%), AI/AN (41%), and other/multiracial (43%) adults. This disparity persisted even among individuals who had medical insurance, a personal health care provider, and a routine checkup within the last year.
Carla Black, PhD, MPH, an epidemiologist at the CDC’s Immunization Services Division, said during the press call. While flu vaccines may not always prevent infection, people who do get sick after being vaccinated tend to have better outcomes, she added. The report noted that building trust, increasing access to vaccination services, and combating misinformation are important steps to increasing vaccine coverage in minority groups.
While social distancing measures such as masking have made it difficult for the flu to spread, the relaxation of these safety measures could also lead to higher case counts. “We’ve had two mild flu seasons, and this means we might be ripe for a severe season,” Dr. Black said. “People haven’t had natural disease in 2 years, so there’s less natural immunity out there. People are going back to work. People are traveling again. All of these factors could contribute to us having a more severe flu season.”
A version of this article first appeared on Medscape.com.
Rapid point-of-care test could help avoid inappropriate antibiotic prescribing
The fingerstick test, FebriDx, works by detecting myxovirus resistance protein A, which the body generates in response to viral infections, and C-reactive protein (CRP), which is associated with systemic bacterial or viral infection.
In a study of 520 adults and children with symptoms of acute respiratory illness who were treated in outpatient settings, the test correctly classified bacterial infections 93.2% of the time (95% confidence interval [CI], 84.9-97.0). The negative predictive value (NPV), or probability that a person with a negative test result was truly free of a bacterial infection, was 98.7% (95% CI, 96.9-99.4).
The findings of the study, which was sponsored by the test’s manufacturer, were published in JAMA Network Open).
The ability to rule out a bacterial cause “may provide clinicians with reassurance to withhold antibiotics when supported by the clinical assessment,” the researchers wrote.
They added that the ability to identify infections that may benefit from antibiotics and confidently rule out those that will not “is essential to optimizing clinical management and addressing global antimicrobial resistance.”
FDA concerned about false negative viral infection results
FebriDx has been cleared for sale in the United Kingdom, Europe, Canada, United Arab Emirates, Brazil, and Australia, according to the manufacturer, Australia-based Lumos Diagnostics.
However, the product is not available in the United States, where the Food and Drug Administration denied marketing clearance in July. In a news release, Lumos said the FDA determined that FebriDx did not demonstrate “substantial equivalence” to a predicate device and expressed concern that false negative viral infection results could lead to missed cases of COVID-19.
In the newly published study, FebriDx identified individuals with viral infections 70.3% of the time (95% CI, 64.8-75.2). The probability that a person who tested negative for a viral infection was truly negative was 66.7% (95%CI, 60.8-72.1).
The study included patients with respiratory symptoms and recent fever who were enrolled from October 2019 to April 2021 at nine emergency departments, six urgent care clinics, and five primary care clinics in the United States. All patients were tested with FebriDx and underwent separate laboratory testing to determine a final diagnosis.
In addition, researchers recruited a control group of 120 individuals without symptoms.
Among 496 symptomatic individuals who had a final diagnosis, 73 (14.7%) were classified as having a response associated with a bacterial infection, 296 (59.7%) as having a viral-associated response, and 127 (25.6%) as negative.
FebriDx correctly ruled out a bacterial infection 88.4% of the time (95% CI, 85.0-91.1). The probability that a patient with a positive result for bacterial infection actually had a bacterial infection was 58.1% (95%CI, 49.1-66.7).
The findings bolster those of a previous study on the same test. This research included 220 patients who reported having a fever within the prior 3 days or had a measurable fever at the time of enrollment. In that study, the test correctly identified bacterial infections 85% of the time and correctly ruled out bacterial infection 93% of the time, with a NPV of 97%.
Too early to say test will be useful in practice
The idea of a test to guide the prescribing of antibiotics isn’t new, according to an expert who was not involved in FebriDx research.
Noah Ivers, MD, PhD, a family physician and associate professor at the University of Toronto who studies strategies to optimize primary care delivery, said, “many such point-of-care tests have been tried” to detect biomarkers such as CRP or procalcitonin, which is associated with bacterial infections.
Such tests have looked good in initial studies, he said, but when trialed in urgent care clinics, primary care clinics, or emergency departments, “they tend run into implementation challenges or simply lack of effects, or both.
“So, while I am happy at the news of this result, it’s too early to say with any certainty that it will prove useful in practice,” he added.
Meanwhile, Dr. Ivers said it’s “crucial that people understand that most illnesses are likely to be viral” and therefore not helped by antibiotics. When antibiotics are needed for outpatients, he said, “5 days is usually ample.”
The study was funded by Lumos Diagnostics. Among the 15 study authors, 6 had conflicts of interest disclosures, reporting ties to Inflammatix, Medical College of Wisconsin, Siemens, Technomics Research, and Lumos Diagnostics. Dr. Ivers reported no relevant financial interests.
The fingerstick test, FebriDx, works by detecting myxovirus resistance protein A, which the body generates in response to viral infections, and C-reactive protein (CRP), which is associated with systemic bacterial or viral infection.
In a study of 520 adults and children with symptoms of acute respiratory illness who were treated in outpatient settings, the test correctly classified bacterial infections 93.2% of the time (95% confidence interval [CI], 84.9-97.0). The negative predictive value (NPV), or probability that a person with a negative test result was truly free of a bacterial infection, was 98.7% (95% CI, 96.9-99.4).
The findings of the study, which was sponsored by the test’s manufacturer, were published in JAMA Network Open).
The ability to rule out a bacterial cause “may provide clinicians with reassurance to withhold antibiotics when supported by the clinical assessment,” the researchers wrote.
They added that the ability to identify infections that may benefit from antibiotics and confidently rule out those that will not “is essential to optimizing clinical management and addressing global antimicrobial resistance.”
FDA concerned about false negative viral infection results
FebriDx has been cleared for sale in the United Kingdom, Europe, Canada, United Arab Emirates, Brazil, and Australia, according to the manufacturer, Australia-based Lumos Diagnostics.
However, the product is not available in the United States, where the Food and Drug Administration denied marketing clearance in July. In a news release, Lumos said the FDA determined that FebriDx did not demonstrate “substantial equivalence” to a predicate device and expressed concern that false negative viral infection results could lead to missed cases of COVID-19.
In the newly published study, FebriDx identified individuals with viral infections 70.3% of the time (95% CI, 64.8-75.2). The probability that a person who tested negative for a viral infection was truly negative was 66.7% (95%CI, 60.8-72.1).
The study included patients with respiratory symptoms and recent fever who were enrolled from October 2019 to April 2021 at nine emergency departments, six urgent care clinics, and five primary care clinics in the United States. All patients were tested with FebriDx and underwent separate laboratory testing to determine a final diagnosis.
In addition, researchers recruited a control group of 120 individuals without symptoms.
Among 496 symptomatic individuals who had a final diagnosis, 73 (14.7%) were classified as having a response associated with a bacterial infection, 296 (59.7%) as having a viral-associated response, and 127 (25.6%) as negative.
FebriDx correctly ruled out a bacterial infection 88.4% of the time (95% CI, 85.0-91.1). The probability that a patient with a positive result for bacterial infection actually had a bacterial infection was 58.1% (95%CI, 49.1-66.7).
The findings bolster those of a previous study on the same test. This research included 220 patients who reported having a fever within the prior 3 days or had a measurable fever at the time of enrollment. In that study, the test correctly identified bacterial infections 85% of the time and correctly ruled out bacterial infection 93% of the time, with a NPV of 97%.
Too early to say test will be useful in practice
The idea of a test to guide the prescribing of antibiotics isn’t new, according to an expert who was not involved in FebriDx research.
Noah Ivers, MD, PhD, a family physician and associate professor at the University of Toronto who studies strategies to optimize primary care delivery, said, “many such point-of-care tests have been tried” to detect biomarkers such as CRP or procalcitonin, which is associated with bacterial infections.
Such tests have looked good in initial studies, he said, but when trialed in urgent care clinics, primary care clinics, or emergency departments, “they tend run into implementation challenges or simply lack of effects, or both.
“So, while I am happy at the news of this result, it’s too early to say with any certainty that it will prove useful in practice,” he added.
Meanwhile, Dr. Ivers said it’s “crucial that people understand that most illnesses are likely to be viral” and therefore not helped by antibiotics. When antibiotics are needed for outpatients, he said, “5 days is usually ample.”
The study was funded by Lumos Diagnostics. Among the 15 study authors, 6 had conflicts of interest disclosures, reporting ties to Inflammatix, Medical College of Wisconsin, Siemens, Technomics Research, and Lumos Diagnostics. Dr. Ivers reported no relevant financial interests.
The fingerstick test, FebriDx, works by detecting myxovirus resistance protein A, which the body generates in response to viral infections, and C-reactive protein (CRP), which is associated with systemic bacterial or viral infection.
In a study of 520 adults and children with symptoms of acute respiratory illness who were treated in outpatient settings, the test correctly classified bacterial infections 93.2% of the time (95% confidence interval [CI], 84.9-97.0). The negative predictive value (NPV), or probability that a person with a negative test result was truly free of a bacterial infection, was 98.7% (95% CI, 96.9-99.4).
The findings of the study, which was sponsored by the test’s manufacturer, were published in JAMA Network Open).
The ability to rule out a bacterial cause “may provide clinicians with reassurance to withhold antibiotics when supported by the clinical assessment,” the researchers wrote.
They added that the ability to identify infections that may benefit from antibiotics and confidently rule out those that will not “is essential to optimizing clinical management and addressing global antimicrobial resistance.”
FDA concerned about false negative viral infection results
FebriDx has been cleared for sale in the United Kingdom, Europe, Canada, United Arab Emirates, Brazil, and Australia, according to the manufacturer, Australia-based Lumos Diagnostics.
However, the product is not available in the United States, where the Food and Drug Administration denied marketing clearance in July. In a news release, Lumos said the FDA determined that FebriDx did not demonstrate “substantial equivalence” to a predicate device and expressed concern that false negative viral infection results could lead to missed cases of COVID-19.
In the newly published study, FebriDx identified individuals with viral infections 70.3% of the time (95% CI, 64.8-75.2). The probability that a person who tested negative for a viral infection was truly negative was 66.7% (95%CI, 60.8-72.1).
The study included patients with respiratory symptoms and recent fever who were enrolled from October 2019 to April 2021 at nine emergency departments, six urgent care clinics, and five primary care clinics in the United States. All patients were tested with FebriDx and underwent separate laboratory testing to determine a final diagnosis.
In addition, researchers recruited a control group of 120 individuals without symptoms.
Among 496 symptomatic individuals who had a final diagnosis, 73 (14.7%) were classified as having a response associated with a bacterial infection, 296 (59.7%) as having a viral-associated response, and 127 (25.6%) as negative.
FebriDx correctly ruled out a bacterial infection 88.4% of the time (95% CI, 85.0-91.1). The probability that a patient with a positive result for bacterial infection actually had a bacterial infection was 58.1% (95%CI, 49.1-66.7).
The findings bolster those of a previous study on the same test. This research included 220 patients who reported having a fever within the prior 3 days or had a measurable fever at the time of enrollment. In that study, the test correctly identified bacterial infections 85% of the time and correctly ruled out bacterial infection 93% of the time, with a NPV of 97%.
Too early to say test will be useful in practice
The idea of a test to guide the prescribing of antibiotics isn’t new, according to an expert who was not involved in FebriDx research.
Noah Ivers, MD, PhD, a family physician and associate professor at the University of Toronto who studies strategies to optimize primary care delivery, said, “many such point-of-care tests have been tried” to detect biomarkers such as CRP or procalcitonin, which is associated with bacterial infections.
Such tests have looked good in initial studies, he said, but when trialed in urgent care clinics, primary care clinics, or emergency departments, “they tend run into implementation challenges or simply lack of effects, or both.
“So, while I am happy at the news of this result, it’s too early to say with any certainty that it will prove useful in practice,” he added.
Meanwhile, Dr. Ivers said it’s “crucial that people understand that most illnesses are likely to be viral” and therefore not helped by antibiotics. When antibiotics are needed for outpatients, he said, “5 days is usually ample.”
The study was funded by Lumos Diagnostics. Among the 15 study authors, 6 had conflicts of interest disclosures, reporting ties to Inflammatix, Medical College of Wisconsin, Siemens, Technomics Research, and Lumos Diagnostics. Dr. Ivers reported no relevant financial interests.
FROM JAMA NETWORK OPEN
FMT in IBS: ‘We’ve been targeting the wrong part of the intestine’
VIENNA – , vs. it being administered into the large intestine, according to a new study.
Patients also reported an improvement in symptoms and quality of life with repeated doses of FMT (two doses, given 1 week apart), compared with a single dose in the small intestine, although statistical significance was not met.
“Administering a fecal transplant to the small intestine leads to long-term – up to 1 year in this analysis – colonization of beneficial bacteria, whereas administrating the fecal transplant to the large intestine results in the effect only lasting for the first 3 months,” said Magdy El-Salhy, MD, from the University of Bergen, Norway.
Dr. El-Salhy presented the results at the annual United European Gastroenterology Week meeting.
“It seems that bacteria in the small intestine play a more central role in IBS, as well as its associated fatigue, than bacteria in the large intestine,” Dr. El-Salhy said in an interview.
“Until now, we’ve been targeting the wrong part of the intestine,” he said.
The findings are the first to show that the small intestine is a more effective location for administering FMT than the large intestine for IBS. “It would be worthwhile doing similar [studies] in other diseases, especially in inflammatory bowel diseases,” said Dr. El-Salhy.
Researchers also didn’t expect the repeated dose to improve symptoms for a longer duration. “It really was revolutionary to see,” he added.
Some of Dr. El-Salhy’s patients have had up to 5 years of follow-up, although these results were not presented at this year’s UEG, he said.
“Around 75% of my patients have shown duration of response up to 3 years, and a few up to 5 years, on a 60-g dose from an earlier study group,” he said. “It’s an incredible result after a 10-minute treatment.”
In Dr. El-Salhy’s previous work, he found that increasing the dose from 30 g to 60 g increased the response from about 75% to about 90%. However, in this study presented, he found that increasing the dose to 90 g did not further increase the response. He also noted that while repeating the FMT dose improved symptoms and quality of life more than a single transplantation, it did not increase the response.
Targeting the small intestine
FMT has been widely investigated for the treatment of such conditions as psoriatic arthritis, Clostridioides difficile infection, and ulcerative colitis.
In this study, Dr. El-Salhy built on prior work (seven randomized controlled studies with varied outcomes) by asking whether the transplant dose increases FMT efficacy, which route of administration is more effective, and whether repeating FMT increases efficacy in patients with IBS.
A total of 186 patients were randomized to one of three groups: 90 g of frozen transplant into the large intestine (n = 62), 90 g of frozen transplant into the small intestine (n = 62), or 90 g of frozen transplant into the small intestine twice (with a 1-week interval; n = 62). FMT was administered via nasoduodenal tube and colonoscopy into the small and large intestines, respectively.
Outcomes were measured at 3, 6, and 12 months. The 12-month analysis of outcomes via patient questionnaire included 60, 61, and 60 patients, respectively.
The patient questionnaires included in the study were the IBS-SSS (a composite score of abdominal pain, duration of abdominal pain, bloating/distention, satisfaction with bowel habits, and IBS-related quality of life), the Birmingham IBS Symptom questionnaire, the Fatigue Assessment Scale questionnaire, the IBS-Quality of Life assessment, and the Short-Form Nepean Dyspepsia Index.
Fecal samples were taken and tested for bacterial loads. The bacterial profile and dysbiosis index were determined using the 16S rRNA gene.
At 3 months, patients had similar response rates, around 80%, across single dose in large intestine, single dose in small intestine, and repeat doses in small intestine.
At 6 months, the differences in response rates started to become noticeable, with 67.9% for single dose in large intestine, 71.4% for single dose in small intestine, and 86% for repeat doses in small intestine.
By 12 months, the difference in response rate between the single dose in the large and small intestines was statistically significant at 51.9% and 75.5%, respectively. The response rate to the repeat doses in the small intestine at 12 months (80.9%) was similar to that at 3 months (80.8%).
Side effects, including mild abdominal pain, diarrhea, and constipation, after FMT were seen for the first 5 days after treatment. “People who generally suffer from constipation get diarrhea after FMT and vice versa,” Dr. El-Salhy reported.
“Long-term side effects, as monitored up to 3 years, were not observed,” he added.
Treatment reduced IBS symptoms in all patient groups as measured by IBS-SSS scores. By 12 months, the score fell from around 350 to around 220 in patients who received a single dose in the large intestine, from around 300 to around 200 in patients who received a single dose in the small intestine, and from around 350 to around 170 in patients who received repeat doses in the small intestine.
Quality of life showed a statistically significant difference at 3 months between single and repeated doses in the small intestine and similarly at 6 and 12 months.
Chronic fatigue, experienced by many patients with IBS, was substantially reduced after FMT, Dr. El-Salhy noted. “This surge in energy is often more important to them than the gastrointestinal symptoms.”
Location affects bacterial success
Certain beneficial bacteria were found to thrive more when the donor transplant was administered to the small intestine than to the large intestine.
Of note, Lactobacillus species and Holdemanella biformis grew and then dropped off sharply after 3 months in patients who received a single-dose fecal transplant in the large intestine, while they grew after 3 months and continued to grow after 6 and 12 months in the groups who received a fecal transplant in the small intestine.
“We think bacteria in the small intestine have different characteristics to those in the large intestine,” Dr. El-Salhy said. “This is relatively new, because many years ago it was thought that bile acids prevented bacterial survival. Now we know lots can thrive in the small intestine.”
“It might be viral or some other component that is most effective here. We don’t know yet, but so far we have identified 11 bacteria of interest,” he added.
Broader questions
“Rather than focusing on a specific, single strain microbe as a predictor of success in a disease, the global equilibrium of microbiota is more important, and microbial ecology parameters would be interesting to assess,” remarked Gianluca Ianiro, MD, from the Università Cattolica del Sacro Cuore, Rome, who comoderated the session. “Selected survival of some bacteria through the gut may be the response.”
FMT emerged in response to the challenges posed by recurrent C. difficile infections, noted Alexander Khoruts, MD, a professor of medicine in the division of gastroenterology, hepatology, and nutrition at the University of Minnesota, Minneapolis, who was not involved in the research.
“It is much harder to achieve remodeling of the gut microbiome in non–C. difficile conditions where there is an intact and resilient indigenous microbiota,” he said in an interview. “Therefore, regimens using antibiotic preconditioning and repeated administrations of microbiota are generally more efficacious in achieving this objective.”
The specificity of the bacteria according to disease type targeted was important, said Dr. Khoruts, who has a special interest in gut microbiota.
“The big question in non–C. difficile indications is the composition of donor microbiota. It is critical that we understand the mechanisms involved in each target disease to design appropriate microbiota-based therapeutics,” he said.
Dr. Khoruts sounded a note of caution with respect to establishing the pharmacokinetic and dynamic data related to FMT, which is classified as a drug in the United States.
“It’s imperative that we develop the pharmacology discipline appropriate for this class of therapeutics, including their pharmacokinetics and pharmacodynamics, and an understanding of their potential toxicity and drug-drug interactions,” he said.
Drug distribution data are needed to determine host-microbiota interactions.
“This includes the small bowel microbiome, which continues to be woefully understudied,” Dr. Khoruts said.
Dr. El-Salhy reports no relevant financial relationships. Dr. Ianiro reports receiving personal fees for acting as speaker for Biocodex, Sofar, Malesci, and Tillotts Pharma, and for acting as consultant/advisor for Ferring Therapeutics, Biocodex, Tillotts Pharma, and Zambon. Dr. Khoruts reports he has patents pertaining to fecal microbiota separation from stool and their cryopreservation and lyopreservation.
A version of this article first appeared on Medscape.com.
VIENNA – , vs. it being administered into the large intestine, according to a new study.
Patients also reported an improvement in symptoms and quality of life with repeated doses of FMT (two doses, given 1 week apart), compared with a single dose in the small intestine, although statistical significance was not met.
“Administering a fecal transplant to the small intestine leads to long-term – up to 1 year in this analysis – colonization of beneficial bacteria, whereas administrating the fecal transplant to the large intestine results in the effect only lasting for the first 3 months,” said Magdy El-Salhy, MD, from the University of Bergen, Norway.
Dr. El-Salhy presented the results at the annual United European Gastroenterology Week meeting.
“It seems that bacteria in the small intestine play a more central role in IBS, as well as its associated fatigue, than bacteria in the large intestine,” Dr. El-Salhy said in an interview.
“Until now, we’ve been targeting the wrong part of the intestine,” he said.
The findings are the first to show that the small intestine is a more effective location for administering FMT than the large intestine for IBS. “It would be worthwhile doing similar [studies] in other diseases, especially in inflammatory bowel diseases,” said Dr. El-Salhy.
Researchers also didn’t expect the repeated dose to improve symptoms for a longer duration. “It really was revolutionary to see,” he added.
Some of Dr. El-Salhy’s patients have had up to 5 years of follow-up, although these results were not presented at this year’s UEG, he said.
“Around 75% of my patients have shown duration of response up to 3 years, and a few up to 5 years, on a 60-g dose from an earlier study group,” he said. “It’s an incredible result after a 10-minute treatment.”
In Dr. El-Salhy’s previous work, he found that increasing the dose from 30 g to 60 g increased the response from about 75% to about 90%. However, in this study presented, he found that increasing the dose to 90 g did not further increase the response. He also noted that while repeating the FMT dose improved symptoms and quality of life more than a single transplantation, it did not increase the response.
Targeting the small intestine
FMT has been widely investigated for the treatment of such conditions as psoriatic arthritis, Clostridioides difficile infection, and ulcerative colitis.
In this study, Dr. El-Salhy built on prior work (seven randomized controlled studies with varied outcomes) by asking whether the transplant dose increases FMT efficacy, which route of administration is more effective, and whether repeating FMT increases efficacy in patients with IBS.
A total of 186 patients were randomized to one of three groups: 90 g of frozen transplant into the large intestine (n = 62), 90 g of frozen transplant into the small intestine (n = 62), or 90 g of frozen transplant into the small intestine twice (with a 1-week interval; n = 62). FMT was administered via nasoduodenal tube and colonoscopy into the small and large intestines, respectively.
Outcomes were measured at 3, 6, and 12 months. The 12-month analysis of outcomes via patient questionnaire included 60, 61, and 60 patients, respectively.
The patient questionnaires included in the study were the IBS-SSS (a composite score of abdominal pain, duration of abdominal pain, bloating/distention, satisfaction with bowel habits, and IBS-related quality of life), the Birmingham IBS Symptom questionnaire, the Fatigue Assessment Scale questionnaire, the IBS-Quality of Life assessment, and the Short-Form Nepean Dyspepsia Index.
Fecal samples were taken and tested for bacterial loads. The bacterial profile and dysbiosis index were determined using the 16S rRNA gene.
At 3 months, patients had similar response rates, around 80%, across single dose in large intestine, single dose in small intestine, and repeat doses in small intestine.
At 6 months, the differences in response rates started to become noticeable, with 67.9% for single dose in large intestine, 71.4% for single dose in small intestine, and 86% for repeat doses in small intestine.
By 12 months, the difference in response rate between the single dose in the large and small intestines was statistically significant at 51.9% and 75.5%, respectively. The response rate to the repeat doses in the small intestine at 12 months (80.9%) was similar to that at 3 months (80.8%).
Side effects, including mild abdominal pain, diarrhea, and constipation, after FMT were seen for the first 5 days after treatment. “People who generally suffer from constipation get diarrhea after FMT and vice versa,” Dr. El-Salhy reported.
“Long-term side effects, as monitored up to 3 years, were not observed,” he added.
Treatment reduced IBS symptoms in all patient groups as measured by IBS-SSS scores. By 12 months, the score fell from around 350 to around 220 in patients who received a single dose in the large intestine, from around 300 to around 200 in patients who received a single dose in the small intestine, and from around 350 to around 170 in patients who received repeat doses in the small intestine.
Quality of life showed a statistically significant difference at 3 months between single and repeated doses in the small intestine and similarly at 6 and 12 months.
Chronic fatigue, experienced by many patients with IBS, was substantially reduced after FMT, Dr. El-Salhy noted. “This surge in energy is often more important to them than the gastrointestinal symptoms.”
Location affects bacterial success
Certain beneficial bacteria were found to thrive more when the donor transplant was administered to the small intestine than to the large intestine.
Of note, Lactobacillus species and Holdemanella biformis grew and then dropped off sharply after 3 months in patients who received a single-dose fecal transplant in the large intestine, while they grew after 3 months and continued to grow after 6 and 12 months in the groups who received a fecal transplant in the small intestine.
“We think bacteria in the small intestine have different characteristics to those in the large intestine,” Dr. El-Salhy said. “This is relatively new, because many years ago it was thought that bile acids prevented bacterial survival. Now we know lots can thrive in the small intestine.”
“It might be viral or some other component that is most effective here. We don’t know yet, but so far we have identified 11 bacteria of interest,” he added.
Broader questions
“Rather than focusing on a specific, single strain microbe as a predictor of success in a disease, the global equilibrium of microbiota is more important, and microbial ecology parameters would be interesting to assess,” remarked Gianluca Ianiro, MD, from the Università Cattolica del Sacro Cuore, Rome, who comoderated the session. “Selected survival of some bacteria through the gut may be the response.”
FMT emerged in response to the challenges posed by recurrent C. difficile infections, noted Alexander Khoruts, MD, a professor of medicine in the division of gastroenterology, hepatology, and nutrition at the University of Minnesota, Minneapolis, who was not involved in the research.
“It is much harder to achieve remodeling of the gut microbiome in non–C. difficile conditions where there is an intact and resilient indigenous microbiota,” he said in an interview. “Therefore, regimens using antibiotic preconditioning and repeated administrations of microbiota are generally more efficacious in achieving this objective.”
The specificity of the bacteria according to disease type targeted was important, said Dr. Khoruts, who has a special interest in gut microbiota.
“The big question in non–C. difficile indications is the composition of donor microbiota. It is critical that we understand the mechanisms involved in each target disease to design appropriate microbiota-based therapeutics,” he said.
Dr. Khoruts sounded a note of caution with respect to establishing the pharmacokinetic and dynamic data related to FMT, which is classified as a drug in the United States.
“It’s imperative that we develop the pharmacology discipline appropriate for this class of therapeutics, including their pharmacokinetics and pharmacodynamics, and an understanding of their potential toxicity and drug-drug interactions,” he said.
Drug distribution data are needed to determine host-microbiota interactions.
“This includes the small bowel microbiome, which continues to be woefully understudied,” Dr. Khoruts said.
Dr. El-Salhy reports no relevant financial relationships. Dr. Ianiro reports receiving personal fees for acting as speaker for Biocodex, Sofar, Malesci, and Tillotts Pharma, and for acting as consultant/advisor for Ferring Therapeutics, Biocodex, Tillotts Pharma, and Zambon. Dr. Khoruts reports he has patents pertaining to fecal microbiota separation from stool and their cryopreservation and lyopreservation.
A version of this article first appeared on Medscape.com.
VIENNA – , vs. it being administered into the large intestine, according to a new study.
Patients also reported an improvement in symptoms and quality of life with repeated doses of FMT (two doses, given 1 week apart), compared with a single dose in the small intestine, although statistical significance was not met.
“Administering a fecal transplant to the small intestine leads to long-term – up to 1 year in this analysis – colonization of beneficial bacteria, whereas administrating the fecal transplant to the large intestine results in the effect only lasting for the first 3 months,” said Magdy El-Salhy, MD, from the University of Bergen, Norway.
Dr. El-Salhy presented the results at the annual United European Gastroenterology Week meeting.
“It seems that bacteria in the small intestine play a more central role in IBS, as well as its associated fatigue, than bacteria in the large intestine,” Dr. El-Salhy said in an interview.
“Until now, we’ve been targeting the wrong part of the intestine,” he said.
The findings are the first to show that the small intestine is a more effective location for administering FMT than the large intestine for IBS. “It would be worthwhile doing similar [studies] in other diseases, especially in inflammatory bowel diseases,” said Dr. El-Salhy.
Researchers also didn’t expect the repeated dose to improve symptoms for a longer duration. “It really was revolutionary to see,” he added.
Some of Dr. El-Salhy’s patients have had up to 5 years of follow-up, although these results were not presented at this year’s UEG, he said.
“Around 75% of my patients have shown duration of response up to 3 years, and a few up to 5 years, on a 60-g dose from an earlier study group,” he said. “It’s an incredible result after a 10-minute treatment.”
In Dr. El-Salhy’s previous work, he found that increasing the dose from 30 g to 60 g increased the response from about 75% to about 90%. However, in this study presented, he found that increasing the dose to 90 g did not further increase the response. He also noted that while repeating the FMT dose improved symptoms and quality of life more than a single transplantation, it did not increase the response.
Targeting the small intestine
FMT has been widely investigated for the treatment of such conditions as psoriatic arthritis, Clostridioides difficile infection, and ulcerative colitis.
In this study, Dr. El-Salhy built on prior work (seven randomized controlled studies with varied outcomes) by asking whether the transplant dose increases FMT efficacy, which route of administration is more effective, and whether repeating FMT increases efficacy in patients with IBS.
A total of 186 patients were randomized to one of three groups: 90 g of frozen transplant into the large intestine (n = 62), 90 g of frozen transplant into the small intestine (n = 62), or 90 g of frozen transplant into the small intestine twice (with a 1-week interval; n = 62). FMT was administered via nasoduodenal tube and colonoscopy into the small and large intestines, respectively.
Outcomes were measured at 3, 6, and 12 months. The 12-month analysis of outcomes via patient questionnaire included 60, 61, and 60 patients, respectively.
The patient questionnaires included in the study were the IBS-SSS (a composite score of abdominal pain, duration of abdominal pain, bloating/distention, satisfaction with bowel habits, and IBS-related quality of life), the Birmingham IBS Symptom questionnaire, the Fatigue Assessment Scale questionnaire, the IBS-Quality of Life assessment, and the Short-Form Nepean Dyspepsia Index.
Fecal samples were taken and tested for bacterial loads. The bacterial profile and dysbiosis index were determined using the 16S rRNA gene.
At 3 months, patients had similar response rates, around 80%, across single dose in large intestine, single dose in small intestine, and repeat doses in small intestine.
At 6 months, the differences in response rates started to become noticeable, with 67.9% for single dose in large intestine, 71.4% for single dose in small intestine, and 86% for repeat doses in small intestine.
By 12 months, the difference in response rate between the single dose in the large and small intestines was statistically significant at 51.9% and 75.5%, respectively. The response rate to the repeat doses in the small intestine at 12 months (80.9%) was similar to that at 3 months (80.8%).
Side effects, including mild abdominal pain, diarrhea, and constipation, after FMT were seen for the first 5 days after treatment. “People who generally suffer from constipation get diarrhea after FMT and vice versa,” Dr. El-Salhy reported.
“Long-term side effects, as monitored up to 3 years, were not observed,” he added.
Treatment reduced IBS symptoms in all patient groups as measured by IBS-SSS scores. By 12 months, the score fell from around 350 to around 220 in patients who received a single dose in the large intestine, from around 300 to around 200 in patients who received a single dose in the small intestine, and from around 350 to around 170 in patients who received repeat doses in the small intestine.
Quality of life showed a statistically significant difference at 3 months between single and repeated doses in the small intestine and similarly at 6 and 12 months.
Chronic fatigue, experienced by many patients with IBS, was substantially reduced after FMT, Dr. El-Salhy noted. “This surge in energy is often more important to them than the gastrointestinal symptoms.”
Location affects bacterial success
Certain beneficial bacteria were found to thrive more when the donor transplant was administered to the small intestine than to the large intestine.
Of note, Lactobacillus species and Holdemanella biformis grew and then dropped off sharply after 3 months in patients who received a single-dose fecal transplant in the large intestine, while they grew after 3 months and continued to grow after 6 and 12 months in the groups who received a fecal transplant in the small intestine.
“We think bacteria in the small intestine have different characteristics to those in the large intestine,” Dr. El-Salhy said. “This is relatively new, because many years ago it was thought that bile acids prevented bacterial survival. Now we know lots can thrive in the small intestine.”
“It might be viral or some other component that is most effective here. We don’t know yet, but so far we have identified 11 bacteria of interest,” he added.
Broader questions
“Rather than focusing on a specific, single strain microbe as a predictor of success in a disease, the global equilibrium of microbiota is more important, and microbial ecology parameters would be interesting to assess,” remarked Gianluca Ianiro, MD, from the Università Cattolica del Sacro Cuore, Rome, who comoderated the session. “Selected survival of some bacteria through the gut may be the response.”
FMT emerged in response to the challenges posed by recurrent C. difficile infections, noted Alexander Khoruts, MD, a professor of medicine in the division of gastroenterology, hepatology, and nutrition at the University of Minnesota, Minneapolis, who was not involved in the research.
“It is much harder to achieve remodeling of the gut microbiome in non–C. difficile conditions where there is an intact and resilient indigenous microbiota,” he said in an interview. “Therefore, regimens using antibiotic preconditioning and repeated administrations of microbiota are generally more efficacious in achieving this objective.”
The specificity of the bacteria according to disease type targeted was important, said Dr. Khoruts, who has a special interest in gut microbiota.
“The big question in non–C. difficile indications is the composition of donor microbiota. It is critical that we understand the mechanisms involved in each target disease to design appropriate microbiota-based therapeutics,” he said.
Dr. Khoruts sounded a note of caution with respect to establishing the pharmacokinetic and dynamic data related to FMT, which is classified as a drug in the United States.
“It’s imperative that we develop the pharmacology discipline appropriate for this class of therapeutics, including their pharmacokinetics and pharmacodynamics, and an understanding of their potential toxicity and drug-drug interactions,” he said.
Drug distribution data are needed to determine host-microbiota interactions.
“This includes the small bowel microbiome, which continues to be woefully understudied,” Dr. Khoruts said.
Dr. El-Salhy reports no relevant financial relationships. Dr. Ianiro reports receiving personal fees for acting as speaker for Biocodex, Sofar, Malesci, and Tillotts Pharma, and for acting as consultant/advisor for Ferring Therapeutics, Biocodex, Tillotts Pharma, and Zambon. Dr. Khoruts reports he has patents pertaining to fecal microbiota separation from stool and their cryopreservation and lyopreservation.
A version of this article first appeared on Medscape.com.
AT UEG WEEK 2022
Hospitalizations for VAP rose prior to pandemic
Health care–associated infections are a significant burden, and “ventilator associated-pneumonia is a contributor to that,” said Namratha S. Meda, MBBS, in a presentation at the annual meeting of the American College of Chest Physicians.
VAP can affect length of stay and other costs, but factors related to VAP hospitalization have not been well studied, said Dr. Meda, of Medstar Health/Georgetown University Hospital, Washington.
To examine trends in hospitalization for VAP, Dr. Meda and colleagues reviewed data from the National Inpatient Sample from January 2013 to December 2019. The study population included adult patients with VAP as a primary or secondary diagnosis based on ICD-9 or ICD-10 codes.
Overall, the trend in hospitalizations showed a consistent increase, said Dr. Meda.
The researchers identified 128,025 adult hospitalizations with VAP during the study period, with an increase from 50 VAP cases per 100,000 hospitalizations in 2013 to 75 cases per 100,000 hospitalizations in 2019.
A total of 42,120 hospitalizations were associated with tracheostomy, ventilator dependence, or both. Hospitalizations in these categories increased by 80% during the study period, from 15 cases per 100,000 hospitalizations in 2013 to 27 cases per 100,000 hospitalizations in 2019.
The median cost for each hospitalization was $83,311, and showed a 2.9% increase from 2013 to 2019. The estimated annual cost of VAP hospitalizations was approximately $2.8 billion in 2019, Dr. Meda emphasized. However, all-cause hospital mortality remained unchanged over the study period, at approximately 20%.
The mean age of the hospitalized VAP patients was 58 years across all VAP-related hospitalizations, and 36.5% were women. More than half (58%) were White, 21% were Black, and 12% were Hispanic.
The researchers noted some sex and racial disparities; the median age was lower for Black and Hispanic patients, compared with White patients, but all-cause mortality was lower. Men had a significantly longer median length of stay, compared with women (21 days vs. 19 days), and higher median costs ($87,981 vs. $74,889) with a P <.001 for both, but the all-cause in-hospital mortality was not significantly different between sexes.
The steady increase in hospitalization for VAP without a significant change in all-cause mortality, might be driven by hospitals with higher levels of tracheostomy and ventilator dependence, but more research is needed, Dr. Meda noted.
The study was limited by the observational design, which allowed the researchers to report an association, but not causality, said Dr. Meda. However, the results reflect the ongoing financial burden of VAP on the health care system, although “it would be interesting to see how the trend might change if we just looked at the clinical definition versus billing data,” she noted.
The study did not include data since the advent of COVID-19, but COVID is likely to drive the trend of increasing VAP hospitalization higher, Dr. Meda added.
The study received no outside funding. The researchers had no financial conflicts to disclose.
Health care–associated infections are a significant burden, and “ventilator associated-pneumonia is a contributor to that,” said Namratha S. Meda, MBBS, in a presentation at the annual meeting of the American College of Chest Physicians.
VAP can affect length of stay and other costs, but factors related to VAP hospitalization have not been well studied, said Dr. Meda, of Medstar Health/Georgetown University Hospital, Washington.
To examine trends in hospitalization for VAP, Dr. Meda and colleagues reviewed data from the National Inpatient Sample from January 2013 to December 2019. The study population included adult patients with VAP as a primary or secondary diagnosis based on ICD-9 or ICD-10 codes.
Overall, the trend in hospitalizations showed a consistent increase, said Dr. Meda.
The researchers identified 128,025 adult hospitalizations with VAP during the study period, with an increase from 50 VAP cases per 100,000 hospitalizations in 2013 to 75 cases per 100,000 hospitalizations in 2019.
A total of 42,120 hospitalizations were associated with tracheostomy, ventilator dependence, or both. Hospitalizations in these categories increased by 80% during the study period, from 15 cases per 100,000 hospitalizations in 2013 to 27 cases per 100,000 hospitalizations in 2019.
The median cost for each hospitalization was $83,311, and showed a 2.9% increase from 2013 to 2019. The estimated annual cost of VAP hospitalizations was approximately $2.8 billion in 2019, Dr. Meda emphasized. However, all-cause hospital mortality remained unchanged over the study period, at approximately 20%.
The mean age of the hospitalized VAP patients was 58 years across all VAP-related hospitalizations, and 36.5% were women. More than half (58%) were White, 21% were Black, and 12% were Hispanic.
The researchers noted some sex and racial disparities; the median age was lower for Black and Hispanic patients, compared with White patients, but all-cause mortality was lower. Men had a significantly longer median length of stay, compared with women (21 days vs. 19 days), and higher median costs ($87,981 vs. $74,889) with a P <.001 for both, but the all-cause in-hospital mortality was not significantly different between sexes.
The steady increase in hospitalization for VAP without a significant change in all-cause mortality, might be driven by hospitals with higher levels of tracheostomy and ventilator dependence, but more research is needed, Dr. Meda noted.
The study was limited by the observational design, which allowed the researchers to report an association, but not causality, said Dr. Meda. However, the results reflect the ongoing financial burden of VAP on the health care system, although “it would be interesting to see how the trend might change if we just looked at the clinical definition versus billing data,” she noted.
The study did not include data since the advent of COVID-19, but COVID is likely to drive the trend of increasing VAP hospitalization higher, Dr. Meda added.
The study received no outside funding. The researchers had no financial conflicts to disclose.
Health care–associated infections are a significant burden, and “ventilator associated-pneumonia is a contributor to that,” said Namratha S. Meda, MBBS, in a presentation at the annual meeting of the American College of Chest Physicians.
VAP can affect length of stay and other costs, but factors related to VAP hospitalization have not been well studied, said Dr. Meda, of Medstar Health/Georgetown University Hospital, Washington.
To examine trends in hospitalization for VAP, Dr. Meda and colleagues reviewed data from the National Inpatient Sample from January 2013 to December 2019. The study population included adult patients with VAP as a primary or secondary diagnosis based on ICD-9 or ICD-10 codes.
Overall, the trend in hospitalizations showed a consistent increase, said Dr. Meda.
The researchers identified 128,025 adult hospitalizations with VAP during the study period, with an increase from 50 VAP cases per 100,000 hospitalizations in 2013 to 75 cases per 100,000 hospitalizations in 2019.
A total of 42,120 hospitalizations were associated with tracheostomy, ventilator dependence, or both. Hospitalizations in these categories increased by 80% during the study period, from 15 cases per 100,000 hospitalizations in 2013 to 27 cases per 100,000 hospitalizations in 2019.
The median cost for each hospitalization was $83,311, and showed a 2.9% increase from 2013 to 2019. The estimated annual cost of VAP hospitalizations was approximately $2.8 billion in 2019, Dr. Meda emphasized. However, all-cause hospital mortality remained unchanged over the study period, at approximately 20%.
The mean age of the hospitalized VAP patients was 58 years across all VAP-related hospitalizations, and 36.5% were women. More than half (58%) were White, 21% were Black, and 12% were Hispanic.
The researchers noted some sex and racial disparities; the median age was lower for Black and Hispanic patients, compared with White patients, but all-cause mortality was lower. Men had a significantly longer median length of stay, compared with women (21 days vs. 19 days), and higher median costs ($87,981 vs. $74,889) with a P <.001 for both, but the all-cause in-hospital mortality was not significantly different between sexes.
The steady increase in hospitalization for VAP without a significant change in all-cause mortality, might be driven by hospitals with higher levels of tracheostomy and ventilator dependence, but more research is needed, Dr. Meda noted.
The study was limited by the observational design, which allowed the researchers to report an association, but not causality, said Dr. Meda. However, the results reflect the ongoing financial burden of VAP on the health care system, although “it would be interesting to see how the trend might change if we just looked at the clinical definition versus billing data,” she noted.
The study did not include data since the advent of COVID-19, but COVID is likely to drive the trend of increasing VAP hospitalization higher, Dr. Meda added.
The study received no outside funding. The researchers had no financial conflicts to disclose.
FROM CHEST 2022