Infectious Disease Practitioner

A new federal rule seeks to reduce Medicare Advantage insurance plans’ prior authorization burdens on physicians while also ensuring that enrollees have the same access to necessary care that they would receive under traditional fee-for-service Medicare.

The prior authorization changes, announced this week, are part of the Centers for Medicare & Medicaid Services’ 2024 update of policy changes for Medicare Advantage and Part D pharmacy plans

Medicare Advantage plans’ business practices have raised significant concerns in recent years. More than 28 million Americans were enrolled in a Medicare Advantage plan in 2022, which is nearly half of all Medicare enrollees, according to the Kaiser Family Foundation.

Medicare pays a fixed amount per enrollee per year to these privately run managed care plans, in contrast to traditional fee-for-service Medicare. Medicare Advantage plans have been criticized for aggressive marketing, for overbilling the federal government for care, and for using prior authorization to inappropriately deny needed care to patients.

About 13% of prior authorization requests that are denied by Medicare Advantage plans actually met Medicare coverage rules and should have been approved, the Office of the Inspector General at the U.S. Department of Health & Human Services reported in 2022.

The newly finalized rule now requires Medicare Advantage plans to do the following.

• Ensure that a prior authorization approval, once granted, remains valid for as long as medically necessary to avoid disruptions in care.
• Conduct an annual review of utilization management policies.
• Ensure that coverage denials based on medical necessity be reviewed by health care professionals with relevant expertise before a denial can be issued.

Physician groups welcomed the changes. In a statement, the American Medical Association said that an initial reading of the rule suggested CMS had “taken important steps toward right-sizing the prior authorization process.”

The Medical Group Management Association praised CMS in a statement for having limited “dangerous disruptions and delays to necessary patient care” resulting from the cumbersome processes of prior approval. With the new rules, CMS will provide greater consistency across Advantage plans as well as traditional Medicare, said Anders Gilberg, MGMA’s senior vice president of government affairs, in a statement.
 

Peer consideration

The final rule did disappoint physician groups in one key way. CMS rebuffed requests to have CMS require Advantage plans to use reviewers of the same specialty as treating physicians in handling disputes about prior authorization. CMS said it expects plans to exercise judgment in finding reviewers with “sufficient expertise to make an informed and supportable decision.”

“In some instances, we expect that plans will use a physician or other health care professional of the same specialty or subspecialty as the treating physician,” CMS said. “In other instances, we expect that plans will utilize a reviewer with specialized training, certification, or clinical experience in the applicable field of medicine.”
 

Medicare Advantage marketing ‘sowing confusion’

With this final rule, CMS also sought to protect consumers from “potentially misleading marketing practices” used in promoting Medicare Advantage and Part D prescription drug plans.

The agency said it had received complaints about people who have received official-looking promotional materials for Medicare that directed them not to government sources of information but to Medicare Advantage and Part D plans or their agents and brokers.

Ads now must mention a specific plan name, and they cannot use the Medicare name, CMS logo, Medicare card, or other government information in a misleading way, CMS said.

“CMS can see no value or purpose in a non-governmental entity’s use of the Medicare logo or HHS logo except for the express purpose of sowing confusion and misrepresenting itself as the government,” the agency said.

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

A new federal rule seeks to reduce Medicare Advantage insurance plans’ prior authorization burdens on physicians while also ensuring that enrollees have the same access to necessary care that they would receive under traditional fee-for-service Medicare.

The prior authorization changes, announced this week, are part of the Centers for Medicare & Medicaid Services’ 2024 update of policy changes for Medicare Advantage and Part D pharmacy plans

Medicare Advantage plans’ business practices have raised significant concerns in recent years. More than 28 million Americans were enrolled in a Medicare Advantage plan in 2022, which is nearly half of all Medicare enrollees, according to the Kaiser Family Foundation.

Medicare pays a fixed amount per enrollee per year to these privately run managed care plans, in contrast to traditional fee-for-service Medicare. Medicare Advantage plans have been criticized for aggressive marketing, for overbilling the federal government for care, and for using prior authorization to inappropriately deny needed care to patients.

About 13% of prior authorization requests that are denied by Medicare Advantage plans actually met Medicare coverage rules and should have been approved, the Office of the Inspector General at the U.S. Department of Health & Human Services reported in 2022.

The newly finalized rule now requires Medicare Advantage plans to do the following.

• Ensure that a prior authorization approval, once granted, remains valid for as long as medically necessary to avoid disruptions in care.
• Conduct an annual review of utilization management policies.
• Ensure that coverage denials based on medical necessity be reviewed by health care professionals with relevant expertise before a denial can be issued.

Physician groups welcomed the changes. In a statement, the American Medical Association said that an initial reading of the rule suggested CMS had “taken important steps toward right-sizing the prior authorization process.”

The Medical Group Management Association praised CMS in a statement for having limited “dangerous disruptions and delays to necessary patient care” resulting from the cumbersome processes of prior approval. With the new rules, CMS will provide greater consistency across Advantage plans as well as traditional Medicare, said Anders Gilberg, MGMA’s senior vice president of government affairs, in a statement.
 

Peer consideration

The final rule did disappoint physician groups in one key way. CMS rebuffed requests to have CMS require Advantage plans to use reviewers of the same specialty as treating physicians in handling disputes about prior authorization. CMS said it expects plans to exercise judgment in finding reviewers with “sufficient expertise to make an informed and supportable decision.”

“In some instances, we expect that plans will use a physician or other health care professional of the same specialty or subspecialty as the treating physician,” CMS said. “In other instances, we expect that plans will utilize a reviewer with specialized training, certification, or clinical experience in the applicable field of medicine.”
 

Medicare Advantage marketing ‘sowing confusion’

With this final rule, CMS also sought to protect consumers from “potentially misleading marketing practices” used in promoting Medicare Advantage and Part D prescription drug plans.

The agency said it had received complaints about people who have received official-looking promotional materials for Medicare that directed them not to government sources of information but to Medicare Advantage and Part D plans or their agents and brokers.

Ads now must mention a specific plan name, and they cannot use the Medicare name, CMS logo, Medicare card, or other government information in a misleading way, CMS said.

“CMS can see no value or purpose in a non-governmental entity’s use of the Medicare logo or HHS logo except for the express purpose of sowing confusion and misrepresenting itself as the government,” the agency said.

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

A new federal rule seeks to reduce Medicare Advantage insurance plans’ prior authorization burdens on physicians while also ensuring that enrollees have the same access to necessary care that they would receive under traditional fee-for-service Medicare.

The prior authorization changes, announced this week, are part of the Centers for Medicare & Medicaid Services’ 2024 update of policy changes for Medicare Advantage and Part D pharmacy plans

Medicare Advantage plans’ business practices have raised significant concerns in recent years. More than 28 million Americans were enrolled in a Medicare Advantage plan in 2022, which is nearly half of all Medicare enrollees, according to the Kaiser Family Foundation.

Medicare pays a fixed amount per enrollee per year to these privately run managed care plans, in contrast to traditional fee-for-service Medicare. Medicare Advantage plans have been criticized for aggressive marketing, for overbilling the federal government for care, and for using prior authorization to inappropriately deny needed care to patients.

About 13% of prior authorization requests that are denied by Medicare Advantage plans actually met Medicare coverage rules and should have been approved, the Office of the Inspector General at the U.S. Department of Health & Human Services reported in 2022.

The newly finalized rule now requires Medicare Advantage plans to do the following.

• Ensure that a prior authorization approval, once granted, remains valid for as long as medically necessary to avoid disruptions in care.
• Conduct an annual review of utilization management policies.
• Ensure that coverage denials based on medical necessity be reviewed by health care professionals with relevant expertise before a denial can be issued.

Physician groups welcomed the changes. In a statement, the American Medical Association said that an initial reading of the rule suggested CMS had “taken important steps toward right-sizing the prior authorization process.”

The Medical Group Management Association praised CMS in a statement for having limited “dangerous disruptions and delays to necessary patient care” resulting from the cumbersome processes of prior approval. With the new rules, CMS will provide greater consistency across Advantage plans as well as traditional Medicare, said Anders Gilberg, MGMA’s senior vice president of government affairs, in a statement.
 

Peer consideration

The final rule did disappoint physician groups in one key way. CMS rebuffed requests to have CMS require Advantage plans to use reviewers of the same specialty as treating physicians in handling disputes about prior authorization. CMS said it expects plans to exercise judgment in finding reviewers with “sufficient expertise to make an informed and supportable decision.”

“In some instances, we expect that plans will use a physician or other health care professional of the same specialty or subspecialty as the treating physician,” CMS said. “In other instances, we expect that plans will utilize a reviewer with specialized training, certification, or clinical experience in the applicable field of medicine.”
 

Medicare Advantage marketing ‘sowing confusion’

With this final rule, CMS also sought to protect consumers from “potentially misleading marketing practices” used in promoting Medicare Advantage and Part D prescription drug plans.

The agency said it had received complaints about people who have received official-looking promotional materials for Medicare that directed them not to government sources of information but to Medicare Advantage and Part D plans or their agents and brokers.

Ads now must mention a specific plan name, and they cannot use the Medicare name, CMS logo, Medicare card, or other government information in a misleading way, CMS said.

“CMS can see no value or purpose in a non-governmental entity’s use of the Medicare logo or HHS logo except for the express purpose of sowing confusion and misrepresenting itself as the government,” the agency said.

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

Alpha-gal syndrome is an increasingly common cause of gastrointestinal issues that remains underrecognized by the medical community, according to an American Gastroenterological Association clinical practice update.

Although the allergic response is best known for a combination of anaphylaxis, skin changes, and gastrointestinal symptoms that occurs within hours of consuming mammalian-derived food products, health care providers should know that many patients experience gastrointestinal distress in the absence of other clinical signs, lead author Sarah K. McGill, MD, MSc, of the University of North Carolina at Chapel Hill, and colleagues reported.

“It is important for gastroenterologists to be aware of this condition and to be capable of diagnosing and treating it in a timely manner,” the investigators wrote in Clinical Gastroenterology and Hepatology.

To this end, Dr. McGill and colleagues drafted the present clinical practice update, covering pathogenesis, clinical manifestations, diagnosis, and management.

“The allergy in alpha-gal syndrome is to galactose alpha-1,3-galactose, an oligosaccharide on the cells of all nonprimate mammals,” the investigators wrote. “Surprisingly, sensitization to alpha-gal, that is, the process by which human beings develop IgE antibodies to the sugar, is understood to occur after the bite of a tick or parasitic infection. In the United States, the Lone Star tick, an ectoparasite whose principal host is deer, is strongly implicated.”

Gastrointestinal focused clinical research is scarce, the investigators noted, citing two observational studies involving 375 patients positive for alpha-gal IgE. Almost half of these patients (40.7%) had gastrointestinal symptoms alone. Across the entire population, the most common gastrointestinal symptoms were abdominal pain (71%) and vomiting (22%). About three out of four patients reported improvement on an alpha-gal avoidance diet.

“Clinicians should consider alpha-gal syndrome in the differential diagnosis of patients with unexplained gastrointestinal symptoms of abdominal pain, diarrhea, nausea, and vomiting, particularly those who live or have lived in an alpha-gal–prevalent area,” the investigators wrote.

In the United States, these areas span the domain of the Lone Star tick, including most of the East Coast, the central Midwest, the South, and all of Texas. Overseas, alpha-gal syndrome has been reported in Japan, Australia, Western Europe, and South Africa.

Clinical suspicion should be increased in patients with a history of tick bite, engagement in outdoor activities, and awakening in the night with gastrointestinal distress (because of the delay between allergen ingestion and symptom onset). Workup should include serum testing for alpha-gal IgE antibodies, according to the update. Serum positivity alone, however, is not sufficient for diagnosis. Alpha-gal syndrome must be confirmed by symptom resolution or improvement upon adherence to an alpha-gal avoidance diet for at least a month.

“During this time, patients may want to avoid eating at restaurants, which can easily cross-contaminate food, and processed food, which may contain alpha-gal in additives,” Dr. McGill and colleagues wrote.

Patients with alpha-gal syndrome who accidentally consume alpha-gal should take 25-50 mg of diphenhydramine and ensure access to a self-injectable epinephrine if symptoms progress, particularly if respiratory compromise occurs, they added.

The coauthors are Jana G. Hasash, MD, and Thomas A. Platts-Mills, MD, PhD.

The investigators disclosed relationships with Olympus America, Exact Sciences, Guardant Health, Finch Therapeutics, and others.

Alpha-gal syndrome is an increasingly common cause of gastrointestinal issues that remains underrecognized by the medical community, according to an American Gastroenterological Association clinical practice update.

Although the allergic response is best known for a combination of anaphylaxis, skin changes, and gastrointestinal symptoms that occurs within hours of consuming mammalian-derived food products, health care providers should know that many patients experience gastrointestinal distress in the absence of other clinical signs, lead author Sarah K. McGill, MD, MSc, of the University of North Carolina at Chapel Hill, and colleagues reported.

“It is important for gastroenterologists to be aware of this condition and to be capable of diagnosing and treating it in a timely manner,” the investigators wrote in Clinical Gastroenterology and Hepatology.

To this end, Dr. McGill and colleagues drafted the present clinical practice update, covering pathogenesis, clinical manifestations, diagnosis, and management.

“The allergy in alpha-gal syndrome is to galactose alpha-1,3-galactose, an oligosaccharide on the cells of all nonprimate mammals,” the investigators wrote. “Surprisingly, sensitization to alpha-gal, that is, the process by which human beings develop IgE antibodies to the sugar, is understood to occur after the bite of a tick or parasitic infection. In the United States, the Lone Star tick, an ectoparasite whose principal host is deer, is strongly implicated.”

Gastrointestinal focused clinical research is scarce, the investigators noted, citing two observational studies involving 375 patients positive for alpha-gal IgE. Almost half of these patients (40.7%) had gastrointestinal symptoms alone. Across the entire population, the most common gastrointestinal symptoms were abdominal pain (71%) and vomiting (22%). About three out of four patients reported improvement on an alpha-gal avoidance diet.

“Clinicians should consider alpha-gal syndrome in the differential diagnosis of patients with unexplained gastrointestinal symptoms of abdominal pain, diarrhea, nausea, and vomiting, particularly those who live or have lived in an alpha-gal–prevalent area,” the investigators wrote.

In the United States, these areas span the domain of the Lone Star tick, including most of the East Coast, the central Midwest, the South, and all of Texas. Overseas, alpha-gal syndrome has been reported in Japan, Australia, Western Europe, and South Africa.

Clinical suspicion should be increased in patients with a history of tick bite, engagement in outdoor activities, and awakening in the night with gastrointestinal distress (because of the delay between allergen ingestion and symptom onset). Workup should include serum testing for alpha-gal IgE antibodies, according to the update. Serum positivity alone, however, is not sufficient for diagnosis. Alpha-gal syndrome must be confirmed by symptom resolution or improvement upon adherence to an alpha-gal avoidance diet for at least a month.

“During this time, patients may want to avoid eating at restaurants, which can easily cross-contaminate food, and processed food, which may contain alpha-gal in additives,” Dr. McGill and colleagues wrote.

Patients with alpha-gal syndrome who accidentally consume alpha-gal should take 25-50 mg of diphenhydramine and ensure access to a self-injectable epinephrine if symptoms progress, particularly if respiratory compromise occurs, they added.

The coauthors are Jana G. Hasash, MD, and Thomas A. Platts-Mills, MD, PhD.

The investigators disclosed relationships with Olympus America, Exact Sciences, Guardant Health, Finch Therapeutics, and others.

Alpha-gal syndrome is an increasingly common cause of gastrointestinal issues that remains underrecognized by the medical community, according to an American Gastroenterological Association clinical practice update.

Although the allergic response is best known for a combination of anaphylaxis, skin changes, and gastrointestinal symptoms that occurs within hours of consuming mammalian-derived food products, health care providers should know that many patients experience gastrointestinal distress in the absence of other clinical signs, lead author Sarah K. McGill, MD, MSc, of the University of North Carolina at Chapel Hill, and colleagues reported.

“It is important for gastroenterologists to be aware of this condition and to be capable of diagnosing and treating it in a timely manner,” the investigators wrote in Clinical Gastroenterology and Hepatology.

To this end, Dr. McGill and colleagues drafted the present clinical practice update, covering pathogenesis, clinical manifestations, diagnosis, and management.

“The allergy in alpha-gal syndrome is to galactose alpha-1,3-galactose, an oligosaccharide on the cells of all nonprimate mammals,” the investigators wrote. “Surprisingly, sensitization to alpha-gal, that is, the process by which human beings develop IgE antibodies to the sugar, is understood to occur after the bite of a tick or parasitic infection. In the United States, the Lone Star tick, an ectoparasite whose principal host is deer, is strongly implicated.”

Gastrointestinal focused clinical research is scarce, the investigators noted, citing two observational studies involving 375 patients positive for alpha-gal IgE. Almost half of these patients (40.7%) had gastrointestinal symptoms alone. Across the entire population, the most common gastrointestinal symptoms were abdominal pain (71%) and vomiting (22%). About three out of four patients reported improvement on an alpha-gal avoidance diet.

“Clinicians should consider alpha-gal syndrome in the differential diagnosis of patients with unexplained gastrointestinal symptoms of abdominal pain, diarrhea, nausea, and vomiting, particularly those who live or have lived in an alpha-gal–prevalent area,” the investigators wrote.

In the United States, these areas span the domain of the Lone Star tick, including most of the East Coast, the central Midwest, the South, and all of Texas. Overseas, alpha-gal syndrome has been reported in Japan, Australia, Western Europe, and South Africa.

Clinical suspicion should be increased in patients with a history of tick bite, engagement in outdoor activities, and awakening in the night with gastrointestinal distress (because of the delay between allergen ingestion and symptom onset). Workup should include serum testing for alpha-gal IgE antibodies, according to the update. Serum positivity alone, however, is not sufficient for diagnosis. Alpha-gal syndrome must be confirmed by symptom resolution or improvement upon adherence to an alpha-gal avoidance diet for at least a month.

“During this time, patients may want to avoid eating at restaurants, which can easily cross-contaminate food, and processed food, which may contain alpha-gal in additives,” Dr. McGill and colleagues wrote.

Patients with alpha-gal syndrome who accidentally consume alpha-gal should take 25-50 mg of diphenhydramine and ensure access to a self-injectable epinephrine if symptoms progress, particularly if respiratory compromise occurs, they added.

The coauthors are Jana G. Hasash, MD, and Thomas A. Platts-Mills, MD, PhD.

The investigators disclosed relationships with Olympus America, Exact Sciences, Guardant Health, Finch Therapeutics, and others.

A whole new, tiny level of hangry

Ever been so hungry that everything just got on your nerves? Maybe you feel a little snappy right now? Like you’ll just lash out unless you get something to eat? Been there. And so have bacteria.

New research shows that some bacteria go into a full-on Hulk smash if they’re not getting the nutrients they need by releasing toxins into the body. Sounds like a bacterial temper tantrum.

Rosenthal et al.

Even though two cells may be genetically identical, they don’t always behave the same in a bacterial community. Some do their job and stay in line, but some evil twins rage out and make people sick by releasing toxins into the environment, Adam Rosenthal, PhD, of the University of North Carolina and his colleagues discovered.

To figure out why some cells were all business as usual while others were not, the investigators looked at Clostridium perfringens, a bacterium found in the intestines of humans and other vertebrates. When the C. perfringens cells were fed a little acetate to munch on, the hangry cells calmed down faster than a kid with a bag of fruit snacks, reducing toxin levels. Some cells even disappeared, falling in line with their model-citizen counterparts.

So what does this really mean? More research, duh. Now that we know nutrients play a role in toxicity, it may open the door to finding a way to fight against antibiotic resistance in humans and reduce antibiotic use in the food industry.

So think to yourself. Are you bothered for no reason? Getting a little testy with your friends and coworkers? Maybe you just haven’t eaten in a while. You’re literally not alone. Even a single-cell organism can behave based on its hunger levels.

Now go have a snack. Your bacteria are getting restless.
 

The very hangry iguana?

Imagine yourself on a warm, sunny tropical beach. You are enjoying a piece of cake as you take in the slow beat of the waves lapping against the shore. Life is as good as it could be.

Then you feel a presence nearby. Hostility. Hunger. A set of feral, covetous eyes in the nearby jungle. A reptilian beast stalks you, and its all-encompassing sweet tooth desires your cake.

Wait, hold on, what?

As an unfortunate 3-year-old on vacation in Costa Rica found out, there’s at least one iguana in the world out there with a taste for sugar (better than a taste for blood, we suppose).

Ulrike Mai/Pixabay

While out on the beach, the lizard darted out of nowhere, bit the girl on the back of the hand, and stole her cake. Still not the worst party guest ever. The child was taken to a local clinic, where the wound was cleaned and a 5-day antibiotic treatment (lizards carry salmonella) was provided. Things seemed fine, and the girl returned home without incident.

But of course, that’s not the end of the story. Five months later, the girl’s parents noticed a red bump at the wound site. Over the next 3 months, the surrounding skin grew red and painful. A trip to the hospital in California revealed that she had a ganglion cyst and a discharge of pus. Turns out our cake-obsessed lizard friend did give the little girl a gift: the first known human case of Mycobacterium marinum infection following an iguana bite on record.

M. marinum, which causes a disease similar to tuberculosis, typically infects fish but can infect humans if skin wounds are exposed to contaminated water. It’s also resistant to most antibiotics, which is why the first round didn’t clear up the infection. A second round of more-potent antibiotics seems to be working well.

So, to sum up, this poor child got bitten by a lizard, had her cake stolen, and contracted a rare illness in exchange. For a 3-year-old, that’s gotta be in the top-10 worst days ever. Unless, of course, we’re actually living in the Marvel universe (sorry, multiverse at this point). Then we’re totally going to see the emergence of the new superhero Iguana Girl in 15 years or so. Keep your eyes open.
 

No allergies? Let them give up cake

Allergy season is already here – starting earlier every year, it seems – and many people are not happy about it. So unhappy, actually, that there’s a list of things they would be willing to give up for a year to get rid of their of allergies, according to a survey conducted by OnePoll on behalf of Flonase.

nicoletaionescu/Getty Images

Nearly 40% of 2,000 respondents with allergies would go a year without eating cake or chocolate or playing video games in exchange for allergy-free status, the survey results show. Almost as many would forgo coffee (38%) or pizza (37%) for a year, while 36% would stay off social media and 31% would take a pay cut or give up their smartphones, the Independent reported.

More than half of the allergic Americans – 54%, to be exact – who were polled this past winter – Feb. 24 to March 1, to be exact – consider allergy symptoms to be the most frustrating part of the spring. Annoying things that were less frustrating to the group included mosquitoes (41%), filing tax returns (38%), and daylight savings time (37%).

The Trump arraignment circus, of course, occurred too late to make the list, as did the big “We’re going back to the office! No wait, we’re closing the office forever!” email extravaganza and emotional roller coaster. That second one, however, did not get nearly as much media coverage.

A whole new, tiny level of hangry

Ever been so hungry that everything just got on your nerves? Maybe you feel a little snappy right now? Like you’ll just lash out unless you get something to eat? Been there. And so have bacteria.

New research shows that some bacteria go into a full-on Hulk smash if they’re not getting the nutrients they need by releasing toxins into the body. Sounds like a bacterial temper tantrum.

Rosenthal et al.

Even though two cells may be genetically identical, they don’t always behave the same in a bacterial community. Some do their job and stay in line, but some evil twins rage out and make people sick by releasing toxins into the environment, Adam Rosenthal, PhD, of the University of North Carolina and his colleagues discovered.

To figure out why some cells were all business as usual while others were not, the investigators looked at Clostridium perfringens, a bacterium found in the intestines of humans and other vertebrates. When the C. perfringens cells were fed a little acetate to munch on, the hangry cells calmed down faster than a kid with a bag of fruit snacks, reducing toxin levels. Some cells even disappeared, falling in line with their model-citizen counterparts.

So what does this really mean? More research, duh. Now that we know nutrients play a role in toxicity, it may open the door to finding a way to fight against antibiotic resistance in humans and reduce antibiotic use in the food industry.

So think to yourself. Are you bothered for no reason? Getting a little testy with your friends and coworkers? Maybe you just haven’t eaten in a while. You’re literally not alone. Even a single-cell organism can behave based on its hunger levels.

Now go have a snack. Your bacteria are getting restless.
 

The very hangry iguana?

Imagine yourself on a warm, sunny tropical beach. You are enjoying a piece of cake as you take in the slow beat of the waves lapping against the shore. Life is as good as it could be.

Then you feel a presence nearby. Hostility. Hunger. A set of feral, covetous eyes in the nearby jungle. A reptilian beast stalks you, and its all-encompassing sweet tooth desires your cake.

Wait, hold on, what?

As an unfortunate 3-year-old on vacation in Costa Rica found out, there’s at least one iguana in the world out there with a taste for sugar (better than a taste for blood, we suppose).

Ulrike Mai/Pixabay

While out on the beach, the lizard darted out of nowhere, bit the girl on the back of the hand, and stole her cake. Still not the worst party guest ever. The child was taken to a local clinic, where the wound was cleaned and a 5-day antibiotic treatment (lizards carry salmonella) was provided. Things seemed fine, and the girl returned home without incident.

But of course, that’s not the end of the story. Five months later, the girl’s parents noticed a red bump at the wound site. Over the next 3 months, the surrounding skin grew red and painful. A trip to the hospital in California revealed that she had a ganglion cyst and a discharge of pus. Turns out our cake-obsessed lizard friend did give the little girl a gift: the first known human case of Mycobacterium marinum infection following an iguana bite on record.

M. marinum, which causes a disease similar to tuberculosis, typically infects fish but can infect humans if skin wounds are exposed to contaminated water. It’s also resistant to most antibiotics, which is why the first round didn’t clear up the infection. A second round of more-potent antibiotics seems to be working well.

So, to sum up, this poor child got bitten by a lizard, had her cake stolen, and contracted a rare illness in exchange. For a 3-year-old, that’s gotta be in the top-10 worst days ever. Unless, of course, we’re actually living in the Marvel universe (sorry, multiverse at this point). Then we’re totally going to see the emergence of the new superhero Iguana Girl in 15 years or so. Keep your eyes open.
 

No allergies? Let them give up cake

Allergy season is already here – starting earlier every year, it seems – and many people are not happy about it. So unhappy, actually, that there’s a list of things they would be willing to give up for a year to get rid of their of allergies, according to a survey conducted by OnePoll on behalf of Flonase.

nicoletaionescu/Getty Images

Nearly 40% of 2,000 respondents with allergies would go a year without eating cake or chocolate or playing video games in exchange for allergy-free status, the survey results show. Almost as many would forgo coffee (38%) or pizza (37%) for a year, while 36% would stay off social media and 31% would take a pay cut or give up their smartphones, the Independent reported.

More than half of the allergic Americans – 54%, to be exact – who were polled this past winter – Feb. 24 to March 1, to be exact – consider allergy symptoms to be the most frustrating part of the spring. Annoying things that were less frustrating to the group included mosquitoes (41%), filing tax returns (38%), and daylight savings time (37%).

The Trump arraignment circus, of course, occurred too late to make the list, as did the big “We’re going back to the office! No wait, we’re closing the office forever!” email extravaganza and emotional roller coaster. That second one, however, did not get nearly as much media coverage.

A whole new, tiny level of hangry

Ever been so hungry that everything just got on your nerves? Maybe you feel a little snappy right now? Like you’ll just lash out unless you get something to eat? Been there. And so have bacteria.

New research shows that some bacteria go into a full-on Hulk smash if they’re not getting the nutrients they need by releasing toxins into the body. Sounds like a bacterial temper tantrum.

Rosenthal et al.

Even though two cells may be genetically identical, they don’t always behave the same in a bacterial community. Some do their job and stay in line, but some evil twins rage out and make people sick by releasing toxins into the environment, Adam Rosenthal, PhD, of the University of North Carolina and his colleagues discovered.

To figure out why some cells were all business as usual while others were not, the investigators looked at Clostridium perfringens, a bacterium found in the intestines of humans and other vertebrates. When the C. perfringens cells were fed a little acetate to munch on, the hangry cells calmed down faster than a kid with a bag of fruit snacks, reducing toxin levels. Some cells even disappeared, falling in line with their model-citizen counterparts.

So what does this really mean? More research, duh. Now that we know nutrients play a role in toxicity, it may open the door to finding a way to fight against antibiotic resistance in humans and reduce antibiotic use in the food industry.

So think to yourself. Are you bothered for no reason? Getting a little testy with your friends and coworkers? Maybe you just haven’t eaten in a while. You’re literally not alone. Even a single-cell organism can behave based on its hunger levels.

Now go have a snack. Your bacteria are getting restless.
 

The very hangry iguana?

Imagine yourself on a warm, sunny tropical beach. You are enjoying a piece of cake as you take in the slow beat of the waves lapping against the shore. Life is as good as it could be.

Then you feel a presence nearby. Hostility. Hunger. A set of feral, covetous eyes in the nearby jungle. A reptilian beast stalks you, and its all-encompassing sweet tooth desires your cake.

Wait, hold on, what?

As an unfortunate 3-year-old on vacation in Costa Rica found out, there’s at least one iguana in the world out there with a taste for sugar (better than a taste for blood, we suppose).

Ulrike Mai/Pixabay

While out on the beach, the lizard darted out of nowhere, bit the girl on the back of the hand, and stole her cake. Still not the worst party guest ever. The child was taken to a local clinic, where the wound was cleaned and a 5-day antibiotic treatment (lizards carry salmonella) was provided. Things seemed fine, and the girl returned home without incident.

But of course, that’s not the end of the story. Five months later, the girl’s parents noticed a red bump at the wound site. Over the next 3 months, the surrounding skin grew red and painful. A trip to the hospital in California revealed that she had a ganglion cyst and a discharge of pus. Turns out our cake-obsessed lizard friend did give the little girl a gift: the first known human case of Mycobacterium marinum infection following an iguana bite on record.

M. marinum, which causes a disease similar to tuberculosis, typically infects fish but can infect humans if skin wounds are exposed to contaminated water. It’s also resistant to most antibiotics, which is why the first round didn’t clear up the infection. A second round of more-potent antibiotics seems to be working well.

So, to sum up, this poor child got bitten by a lizard, had her cake stolen, and contracted a rare illness in exchange. For a 3-year-old, that’s gotta be in the top-10 worst days ever. Unless, of course, we’re actually living in the Marvel universe (sorry, multiverse at this point). Then we’re totally going to see the emergence of the new superhero Iguana Girl in 15 years or so. Keep your eyes open.
 

No allergies? Let them give up cake

Allergy season is already here – starting earlier every year, it seems – and many people are not happy about it. So unhappy, actually, that there’s a list of things they would be willing to give up for a year to get rid of their of allergies, according to a survey conducted by OnePoll on behalf of Flonase.

nicoletaionescu/Getty Images

Nearly 40% of 2,000 respondents with allergies would go a year without eating cake or chocolate or playing video games in exchange for allergy-free status, the survey results show. Almost as many would forgo coffee (38%) or pizza (37%) for a year, while 36% would stay off social media and 31% would take a pay cut or give up their smartphones, the Independent reported.

More than half of the allergic Americans – 54%, to be exact – who were polled this past winter – Feb. 24 to March 1, to be exact – consider allergy symptoms to be the most frustrating part of the spring. Annoying things that were less frustrating to the group included mosquitoes (41%), filing tax returns (38%), and daylight savings time (37%).

The Trump arraignment circus, of course, occurred too late to make the list, as did the big “We’re going back to the office! No wait, we’re closing the office forever!” email extravaganza and emotional roller coaster. That second one, however, did not get nearly as much media coverage.

Researchers have found for the first time that COVID infection has crossed the placenta and caused brain damage in two newborns, according to a study published online today in Pediatrics .

One of the infants died at 13 months and the other remained in hospice care at time of manuscript submission.

Lead author Merline Benny, MD, with the division of neonatology, department of pediatrics at University of Miami, and colleagues briefed reporters today ahead of the release.

Zelda Calvert

“This is a first,” said senior author Shahnaz Duara, MD, medical director of the Neonatal Intensive Care Unit at Holtz Children’s Hospital, Miami, explaining it is the first study to confirm cross-placental SARS-CoV-2 transmission leading to brain injury in a newborn.
 

Both infants negative for the virus at birth

The two infants were admitted in the early days of the pandemic in the Delta wave to the neonatal ICU at Holtz Children’s Hospital at University of Miami/Jackson Memorial Medical Center.

Both infants tested negative for the virus at birth, but had significantly elevated SARS-CoV-2 antibodies in their blood, indicating that either antibodies crossed the placenta, or the virus crossed and the immune response was the baby’s.

Dr. Benny explained that the researchers have seen, to this point, more than 700 mother/infant pairs in whom the mother tested positive for COVID in Jackson hospital.

Most who tested positive for COVID were asymptomatic and most of the mothers and infants left the hospital without complications.

“However, (these) two babies had a very unusual clinical picture,” Dr. Benny said.

Those infants were born to mothers who became COVID positive in the second trimester and delivered a few weeks later.

Seizures started on day 1 of life

The babies began to seize from the first day of life. They had profound low tone (hypotonia) in their clinical exam, Dr. Benny explained.

“We had absolutely no good explanation for the early seizures and the degree of brain injury we saw,” Dr. Duara said.

Dr. Benny said that as their bodies grew, they had very small head circumference. Unlike some babies born with the Zika virus, these babies were not microcephalic at birth. Brain imaging on the two babies indicated significant brain atrophy, and neurodevelopment exams showed significant delay.

Discussions began with the center’s multidisciplinary team including neurologists, pathologists, neuroradiologists, and obstetricians who cared for both the mothers and the babies.

The experts examined the placentas and found some characteristic COVID changes and presence of the COVID virus. This was accompanied by increased markers for inflammation and a severe reduction in a hormone critical for placental health and brain development.

Examining the infant’s autopsy findings further raised suspicions of maternal transmission, something that had not been documented before.

Coauthor Ali G. Saad, MD, pediatric and perinatal pathology director at Miami, said, “I have seen literally thousands of brains in autopsies over the last 14 years, and this was the most dramatic case of leukoencephalopathy or loss of white matter in a patient with no significant reason. That’s what triggered the investigation.”
 

Mothers had very different presentations

Coauthor Michael J. Paidas, MD, with the department of obstetrics, gynecology, and reproductive sciences at Miami, pointed out that the circumstances of the two mothers, who were in their 20s, were very different.

One mother delivered at 32 weeks and had a very severe COVID presentation and spent a month in the intensive care unit. The team decided to deliver the child to save the mother, Dr. Paidas said.

In contrast, the other mother had asymptomatic COVID infection in the second trimester and delivered at full term.

He said one of the early suspicions in the babies’ presentations was hypoxic ischemic encephalopathy. “But it wasn’t lack of blood flow to the placenta that caused this,” he said. “As best we can tell, it was the viral infection.”
 

Instances are rare

The researchers emphasized that these instances are rare and have not been seen before or since the period of this study to their knowledge.

Dr. Duara said, “This is something we want to alert the medical community to more than the general public. We do not want the lay public to be panicked. We’re trying to understand what made these two pregnancies different, so we can direct research towards protecting vulnerable babies.”

Previous data have indicated a relatively benign status in infants who test negative for the COVID virus after birth. Dr. Benny added that COVID vaccination has been found safe in pregnancy and both vaccination and breastfeeding can help passage of antibodies to the infant and help protect the baby. Because these cases happened in the early days of the pandemic, no vaccines were available.

Dr. Paidas received funding from BioIncept to study hypoxic-ischemic encephalopathy with Preimplantation Factor, is a scientific advisory board member, and has stock options. Dr. Paidas and coauthor Dr. Jayakumar are coinventors of SPIKENET, University of Miami, patent pending 2023. The other authors have no conflicts of interest to disclose.

Researchers have found for the first time that COVID infection has crossed the placenta and caused brain damage in two newborns, according to a study published online today in Pediatrics .

One of the infants died at 13 months and the other remained in hospice care at time of manuscript submission.

Lead author Merline Benny, MD, with the division of neonatology, department of pediatrics at University of Miami, and colleagues briefed reporters today ahead of the release.

Zelda Calvert

“This is a first,” said senior author Shahnaz Duara, MD, medical director of the Neonatal Intensive Care Unit at Holtz Children’s Hospital, Miami, explaining it is the first study to confirm cross-placental SARS-CoV-2 transmission leading to brain injury in a newborn.
 

Both infants negative for the virus at birth

The two infants were admitted in the early days of the pandemic in the Delta wave to the neonatal ICU at Holtz Children’s Hospital at University of Miami/Jackson Memorial Medical Center.

Both infants tested negative for the virus at birth, but had significantly elevated SARS-CoV-2 antibodies in their blood, indicating that either antibodies crossed the placenta, or the virus crossed and the immune response was the baby’s.

Dr. Benny explained that the researchers have seen, to this point, more than 700 mother/infant pairs in whom the mother tested positive for COVID in Jackson hospital.

Most who tested positive for COVID were asymptomatic and most of the mothers and infants left the hospital without complications.

“However, (these) two babies had a very unusual clinical picture,” Dr. Benny said.

Those infants were born to mothers who became COVID positive in the second trimester and delivered a few weeks later.

Seizures started on day 1 of life

The babies began to seize from the first day of life. They had profound low tone (hypotonia) in their clinical exam, Dr. Benny explained.

“We had absolutely no good explanation for the early seizures and the degree of brain injury we saw,” Dr. Duara said.

Dr. Benny said that as their bodies grew, they had very small head circumference. Unlike some babies born with the Zika virus, these babies were not microcephalic at birth. Brain imaging on the two babies indicated significant brain atrophy, and neurodevelopment exams showed significant delay.

Discussions began with the center’s multidisciplinary team including neurologists, pathologists, neuroradiologists, and obstetricians who cared for both the mothers and the babies.

The experts examined the placentas and found some characteristic COVID changes and presence of the COVID virus. This was accompanied by increased markers for inflammation and a severe reduction in a hormone critical for placental health and brain development.

Examining the infant’s autopsy findings further raised suspicions of maternal transmission, something that had not been documented before.

Coauthor Ali G. Saad, MD, pediatric and perinatal pathology director at Miami, said, “I have seen literally thousands of brains in autopsies over the last 14 years, and this was the most dramatic case of leukoencephalopathy or loss of white matter in a patient with no significant reason. That’s what triggered the investigation.”
 

Mothers had very different presentations

Coauthor Michael J. Paidas, MD, with the department of obstetrics, gynecology, and reproductive sciences at Miami, pointed out that the circumstances of the two mothers, who were in their 20s, were very different.

One mother delivered at 32 weeks and had a very severe COVID presentation and spent a month in the intensive care unit. The team decided to deliver the child to save the mother, Dr. Paidas said.

In contrast, the other mother had asymptomatic COVID infection in the second trimester and delivered at full term.

He said one of the early suspicions in the babies’ presentations was hypoxic ischemic encephalopathy. “But it wasn’t lack of blood flow to the placenta that caused this,” he said. “As best we can tell, it was the viral infection.”
 

Instances are rare

The researchers emphasized that these instances are rare and have not been seen before or since the period of this study to their knowledge.

Dr. Duara said, “This is something we want to alert the medical community to more than the general public. We do not want the lay public to be panicked. We’re trying to understand what made these two pregnancies different, so we can direct research towards protecting vulnerable babies.”

Previous data have indicated a relatively benign status in infants who test negative for the COVID virus after birth. Dr. Benny added that COVID vaccination has been found safe in pregnancy and both vaccination and breastfeeding can help passage of antibodies to the infant and help protect the baby. Because these cases happened in the early days of the pandemic, no vaccines were available.

Dr. Paidas received funding from BioIncept to study hypoxic-ischemic encephalopathy with Preimplantation Factor, is a scientific advisory board member, and has stock options. Dr. Paidas and coauthor Dr. Jayakumar are coinventors of SPIKENET, University of Miami, patent pending 2023. The other authors have no conflicts of interest to disclose.

Researchers have found for the first time that COVID infection has crossed the placenta and caused brain damage in two newborns, according to a study published online today in Pediatrics .

One of the infants died at 13 months and the other remained in hospice care at time of manuscript submission.

Lead author Merline Benny, MD, with the division of neonatology, department of pediatrics at University of Miami, and colleagues briefed reporters today ahead of the release.

Zelda Calvert

“This is a first,” said senior author Shahnaz Duara, MD, medical director of the Neonatal Intensive Care Unit at Holtz Children’s Hospital, Miami, explaining it is the first study to confirm cross-placental SARS-CoV-2 transmission leading to brain injury in a newborn.
 

Both infants negative for the virus at birth

The two infants were admitted in the early days of the pandemic in the Delta wave to the neonatal ICU at Holtz Children’s Hospital at University of Miami/Jackson Memorial Medical Center.

Both infants tested negative for the virus at birth, but had significantly elevated SARS-CoV-2 antibodies in their blood, indicating that either antibodies crossed the placenta, or the virus crossed and the immune response was the baby’s.

Dr. Benny explained that the researchers have seen, to this point, more than 700 mother/infant pairs in whom the mother tested positive for COVID in Jackson hospital.

Most who tested positive for COVID were asymptomatic and most of the mothers and infants left the hospital without complications.

“However, (these) two babies had a very unusual clinical picture,” Dr. Benny said.

Those infants were born to mothers who became COVID positive in the second trimester and delivered a few weeks later.

Seizures started on day 1 of life

The babies began to seize from the first day of life. They had profound low tone (hypotonia) in their clinical exam, Dr. Benny explained.

“We had absolutely no good explanation for the early seizures and the degree of brain injury we saw,” Dr. Duara said.

Dr. Benny said that as their bodies grew, they had very small head circumference. Unlike some babies born with the Zika virus, these babies were not microcephalic at birth. Brain imaging on the two babies indicated significant brain atrophy, and neurodevelopment exams showed significant delay.

Discussions began with the center’s multidisciplinary team including neurologists, pathologists, neuroradiologists, and obstetricians who cared for both the mothers and the babies.

The experts examined the placentas and found some characteristic COVID changes and presence of the COVID virus. This was accompanied by increased markers for inflammation and a severe reduction in a hormone critical for placental health and brain development.

Examining the infant’s autopsy findings further raised suspicions of maternal transmission, something that had not been documented before.

Coauthor Ali G. Saad, MD, pediatric and perinatal pathology director at Miami, said, “I have seen literally thousands of brains in autopsies over the last 14 years, and this was the most dramatic case of leukoencephalopathy or loss of white matter in a patient with no significant reason. That’s what triggered the investigation.”
 

Mothers had very different presentations

Coauthor Michael J. Paidas, MD, with the department of obstetrics, gynecology, and reproductive sciences at Miami, pointed out that the circumstances of the two mothers, who were in their 20s, were very different.

One mother delivered at 32 weeks and had a very severe COVID presentation and spent a month in the intensive care unit. The team decided to deliver the child to save the mother, Dr. Paidas said.

In contrast, the other mother had asymptomatic COVID infection in the second trimester and delivered at full term.

He said one of the early suspicions in the babies’ presentations was hypoxic ischemic encephalopathy. “But it wasn’t lack of blood flow to the placenta that caused this,” he said. “As best we can tell, it was the viral infection.”
 

Instances are rare

The researchers emphasized that these instances are rare and have not been seen before or since the period of this study to their knowledge.

Dr. Duara said, “This is something we want to alert the medical community to more than the general public. We do not want the lay public to be panicked. We’re trying to understand what made these two pregnancies different, so we can direct research towards protecting vulnerable babies.”

Previous data have indicated a relatively benign status in infants who test negative for the COVID virus after birth. Dr. Benny added that COVID vaccination has been found safe in pregnancy and both vaccination and breastfeeding can help passage of antibodies to the infant and help protect the baby. Because these cases happened in the early days of the pandemic, no vaccines were available.

Dr. Paidas received funding from BioIncept to study hypoxic-ischemic encephalopathy with Preimplantation Factor, is a scientific advisory board member, and has stock options. Dr. Paidas and coauthor Dr. Jayakumar are coinventors of SPIKENET, University of Miami, patent pending 2023. The other authors have no conflicts of interest to disclose.

Lisa McCorkell had a mild bout of COVID-19 in March 2020. Young and healthy, she assumed that she would bounce back quickly. But when her fatigue, shortness of breath, and brain fog persisted, she realized that she most likely had long COVID. 

“Back then, we as patients basically coined the term,” she said. While her first primary care provider was sympathetic, they were unsure how to treat her. After her insurance changed, she ended up with a second primary care provider who didn’t take her symptoms seriously. “They dismissed my complaints and told me they were all in my head. I didn’t seek care for a while after that.”

Ms. McCorkell’s symptoms improved after her first COVID vaccine in the spring of 2021. She also finally found a new primary care doctor she could trust. But as one of the founders of the Patient-Led Research Collaborative, a group of researchers who study long COVID, she said many doctors still don’t know the hallmark symptoms of the condition or how to treat it. 

“There’s still a lack of education on what long COVID is, and the symptoms associated with it,” she said. “Many of the symptoms that occur in long COVID are symptoms of other chronic conditions, such as chronic fatigue syndrome, that are often dismissed. And even if providers believe patients and send them for a workup, many of the routine blood and imaging tests come back normal.”

The term “long COVID” emerged in May 2020. And though the condition was recognized within a few months of the start of the pandemic, doctors weren’t sure how to screen or treat it. 

While knowledge has developed since then, primary care doctors are still in a tough spot. They’re often the first providers that patients turn to when they have symptoms of long COVID. But with no standard diagnostic tests, treatment guidelines, standard care recommendations, and a large range of symptoms the condition can produce, doctors may not know what to look for, nor how to help patients.

“There’s no clear algorithm to pick up long COVID – there are no definite blood tests or biomarkers, or specific things to look for on a physical exam,” said Lawrence Purpura, MD, an infectious disease specialist and director of the long COVID clinic at Columbia University Medical Center, New York. “It’s a complicated disease that can impact every organ system of the body.”

Even so, emerging research has identified a checklist of sorts that doctors should consider when a patient seeks care for what appears to be long COVID. Among them: the key systems and organs impacted by the disease, the most common symptoms, useful therapeutic options for symptom management that have been found to help people with long COVID, and the best healthy lifestyle choices that doctors can recommend to help their patients 

Here’s a closer look at each of these aspects, based on research and interviews with experts, patients, and doctors. 
 

Key systems, organs impacted

About 10% of people who are infected with COVID-19 go on to have long COVID, according to a recent study that Ms. McCorkell helped coauthor. But more than 3 years into the pandemic, much about the condition is still a mystery.

COVID is a unique virus because it can spread far and wide in a patient’s body. A December 2022 study, published in Nature, autopsied 44 people who died of COVID and found that the virus could spread throughout the body and persist, in one case as long as 230 days after symptoms started. 

“We know that there are dozens of symptoms across multiple organ systems,” said Ms. McCorkell. “That makes it harder for a primary care physician to connect the dots and associate it with COVID.”

A paper published in Nature Medicine proposed one way to help guide diagnosis. It divided symptoms into four groups: 

• Cardiac and renal issues such as heart palpitations, chest pain, and kidney damage
• Sleep and anxiety problems like insomnia, waking up in the middle of the night, and anxiety
• In the musculoskeletal and nervous systems: musculoskeletal pain, osteoarthritis, and problems with mental skills
• In the digestive and respiratory systems: trouble breathing, asthma, stomach pain, nausea, and vomiting

There were also specific patterns in these groups. People in the first group were more likely to be older, male, have other conditions and to have been infected during the first wave of the COVID pandemic. People in the second group were over 60% female, and were more likely to have had previous allergies or asthma. The third group was also about 60% female, and many of them already had autoimmune conditions such as rheumatoid arthritis. Members of the fourth group – also 60% female – were the least likely of all the groups to have another condition.

This research is helpful, because it gives doctors a better sense of what conditions might make a patient more likely to get long COVID, as well as specific symptoms to look out for, said Steven Flanagan, MD, a physical medicine and rehabilitation specialist at New York University Langone Medical Center who also specializes in treating patients with long COVID. 

But the “challenge there, though, for health care providers is that not everyone will fall neatly into one of these categories,” he stressed.
 

Checklist of symptoms 

Although long COVID can be confusing, doctors say there are several symptoms that appear consistently that primary care providers should look out for, that could flag long COVID.

Postexertional malaise (PEM). This is different from simply feeling tired. “This term is often conflated with fatigue, but it’s very different,” said David Putrino, PhD, director of rehabilitation innovation at the Mount Sinai Health System in New York, who says that he sees it in about 90% of patients who come to his long COVID clinic. 

PEM is the worsening of symptoms after physical or mental exertion. This usually occurs a day or 2 after the activity, but it can last for days, and sometimes weeks. 

“It’s very different from fatigue, which is just a generalized tiredness, and exercise intolerance, where someone complains of not being able to do their usual workout on the treadmill,” he noted. “People with PEM are able to push through and do what they need to do, and then are hit with symptoms anywhere from 12 to 72 hours later.”

Dysautonomia. This is an umbrella term used to describe a dysfunction of the autonomic nervous system, which regulates bodily functions that you can’t control, like your blood pressure, heart rate, and breathing. This can cause symptoms such as heart palpitations, along with orthostatic intolerance, which means you can’t stand up for long without feeling faint or dizzy. 

“In my practice, about 80% of patients meet criteria for dysautonomia,” said Dr. Putrino. Other research has found that it’s present in about two-thirds of long COVID patients.

One relatively easy way primary care providers can diagnose dysautonomia is to do the tilt table test. This helps check for postural orthostatic tachycardia syndrome (POTS), one of the most common forms of dysautonomia. During this exam, the patient lies flat on a table. As the head of the table is raised to an almost upright position, their heart rate and blood pressure are measured. Signs of POTS include an abnormal heart rate when you’re upright, as well as a worsening of symptoms.

Exercise intolerance. A review published in the journal JAMA Network Open analyzed 38 studies on long COVID and exercise and found that patients with the condition had a much harder time doing physical activity. Exercise capacity was reduced to levels that would be expected about a decade later in life, according to study authors. 

“This is especially important because it can’t be explained just by deconditioning,” said Dr. Purpura. “Sometimes these patients are encouraged to ramp up exercise as a way to help with symptoms, but in these cases, encouraging them to push through can cause postexertional malaise, which sets patients back and delays recovery.”

While long COVID can cause dozens of symptoms, a paper Ms. McCorkell coauthored zeroed in on some of the most common ones: chest pain, heart palpitations, coughing, shortness of breath, belly pain, nausea, problems with mental skills, fatigue, disordered sleep, memory loss, ringing in the ears (tinnitus), erectile dysfunction, irregular menstruation, and worsened premenstrual syndrome.

While most primary care providers are familiar with some of these long COVID symptoms, they may not be aware of others. 

“COVID itself seems to cause hormonal changes that can lead to erection and menstrual cycle problems,” explained Dr. Putrino. “But these may not be picked up in a visit if the patient is complaining of other signs of long COVID.” 

It’s not just what symptoms are, but when they began to occur, he added. “Usually, these symptoms either start with the initial COVID infection, or begin sometime within 3 months after the acute COVID infection. That’s why it’s important for people with COVID to take notice of anything unusual that crops up within a month or 2 after getting sick.”
 

Can you prevent long COVID?

You can’t, but one of the best ways to reduce your risk is to get vaccinated. Getting at least one dose of a COVID vaccine before you test positive for COVID lowers your risk of long COVID by about 35% according to a study published in Antimicrobial Stewardship & Healthcare Epidemiology. Unvaccinated people who recovered from COVID, and then got a vaccine, lowered their own long COVID risk by 27%. 

In addition, a study published in JAMA Internal Medicine found that women who were infected with COVID were less likely to go on to get long COVID and/or have less debilitating symptoms if they had a healthy lifestyle, which included the following: a healthy weight (a body mass index between 18.5 and 24.7 kg/m²), never-smoker, moderate alcohol consumption, a high-quality diet, 7-9 hours of sleep a night, and at least 150 minutes per week of physical activity

But Ms. McCorkell noted that she herself had a healthy preinfection lifestyle but got long COVID anyway, suggesting these approaches don’t work for everyone.

“I think one reason my symptoms weren’t addressed by primary care physicians for so long is because they looked at me and saw that I was young and healthy, so they dismissed my reports as being all in my head,” she explained. “But we know now anyone can get long COVID, regardless of age, health status, or disease severity. That’s why it’s so important that primary care physicians be able to recognize symptoms.”

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

Lisa McCorkell had a mild bout of COVID-19 in March 2020. Young and healthy, she assumed that she would bounce back quickly. But when her fatigue, shortness of breath, and brain fog persisted, she realized that she most likely had long COVID. 

“Back then, we as patients basically coined the term,” she said. While her first primary care provider was sympathetic, they were unsure how to treat her. After her insurance changed, she ended up with a second primary care provider who didn’t take her symptoms seriously. “They dismissed my complaints and told me they were all in my head. I didn’t seek care for a while after that.”

Ms. McCorkell’s symptoms improved after her first COVID vaccine in the spring of 2021. She also finally found a new primary care doctor she could trust. But as one of the founders of the Patient-Led Research Collaborative, a group of researchers who study long COVID, she said many doctors still don’t know the hallmark symptoms of the condition or how to treat it. 

“There’s still a lack of education on what long COVID is, and the symptoms associated with it,” she said. “Many of the symptoms that occur in long COVID are symptoms of other chronic conditions, such as chronic fatigue syndrome, that are often dismissed. And even if providers believe patients and send them for a workup, many of the routine blood and imaging tests come back normal.”

The term “long COVID” emerged in May 2020. And though the condition was recognized within a few months of the start of the pandemic, doctors weren’t sure how to screen or treat it. 

While knowledge has developed since then, primary care doctors are still in a tough spot. They’re often the first providers that patients turn to when they have symptoms of long COVID. But with no standard diagnostic tests, treatment guidelines, standard care recommendations, and a large range of symptoms the condition can produce, doctors may not know what to look for, nor how to help patients.

“There’s no clear algorithm to pick up long COVID – there are no definite blood tests or biomarkers, or specific things to look for on a physical exam,” said Lawrence Purpura, MD, an infectious disease specialist and director of the long COVID clinic at Columbia University Medical Center, New York. “It’s a complicated disease that can impact every organ system of the body.”

Even so, emerging research has identified a checklist of sorts that doctors should consider when a patient seeks care for what appears to be long COVID. Among them: the key systems and organs impacted by the disease, the most common symptoms, useful therapeutic options for symptom management that have been found to help people with long COVID, and the best healthy lifestyle choices that doctors can recommend to help their patients 

Here’s a closer look at each of these aspects, based on research and interviews with experts, patients, and doctors. 
 

Key systems, organs impacted

About 10% of people who are infected with COVID-19 go on to have long COVID, according to a recent study that Ms. McCorkell helped coauthor. But more than 3 years into the pandemic, much about the condition is still a mystery.

COVID is a unique virus because it can spread far and wide in a patient’s body. A December 2022 study, published in Nature, autopsied 44 people who died of COVID and found that the virus could spread throughout the body and persist, in one case as long as 230 days after symptoms started. 

“We know that there are dozens of symptoms across multiple organ systems,” said Ms. McCorkell. “That makes it harder for a primary care physician to connect the dots and associate it with COVID.”

A paper published in Nature Medicine proposed one way to help guide diagnosis. It divided symptoms into four groups: 

• Cardiac and renal issues such as heart palpitations, chest pain, and kidney damage
• Sleep and anxiety problems like insomnia, waking up in the middle of the night, and anxiety
• In the musculoskeletal and nervous systems: musculoskeletal pain, osteoarthritis, and problems with mental skills
• In the digestive and respiratory systems: trouble breathing, asthma, stomach pain, nausea, and vomiting

There were also specific patterns in these groups. People in the first group were more likely to be older, male, have other conditions and to have been infected during the first wave of the COVID pandemic. People in the second group were over 60% female, and were more likely to have had previous allergies or asthma. The third group was also about 60% female, and many of them already had autoimmune conditions such as rheumatoid arthritis. Members of the fourth group – also 60% female – were the least likely of all the groups to have another condition.

This research is helpful, because it gives doctors a better sense of what conditions might make a patient more likely to get long COVID, as well as specific symptoms to look out for, said Steven Flanagan, MD, a physical medicine and rehabilitation specialist at New York University Langone Medical Center who also specializes in treating patients with long COVID. 

But the “challenge there, though, for health care providers is that not everyone will fall neatly into one of these categories,” he stressed.
 

Checklist of symptoms 

Although long COVID can be confusing, doctors say there are several symptoms that appear consistently that primary care providers should look out for, that could flag long COVID.

Postexertional malaise (PEM). This is different from simply feeling tired. “This term is often conflated with fatigue, but it’s very different,” said David Putrino, PhD, director of rehabilitation innovation at the Mount Sinai Health System in New York, who says that he sees it in about 90% of patients who come to his long COVID clinic. 

PEM is the worsening of symptoms after physical or mental exertion. This usually occurs a day or 2 after the activity, but it can last for days, and sometimes weeks. 

“It’s very different from fatigue, which is just a generalized tiredness, and exercise intolerance, where someone complains of not being able to do their usual workout on the treadmill,” he noted. “People with PEM are able to push through and do what they need to do, and then are hit with symptoms anywhere from 12 to 72 hours later.”

Dysautonomia. This is an umbrella term used to describe a dysfunction of the autonomic nervous system, which regulates bodily functions that you can’t control, like your blood pressure, heart rate, and breathing. This can cause symptoms such as heart palpitations, along with orthostatic intolerance, which means you can’t stand up for long without feeling faint or dizzy. 

“In my practice, about 80% of patients meet criteria for dysautonomia,” said Dr. Putrino. Other research has found that it’s present in about two-thirds of long COVID patients.

One relatively easy way primary care providers can diagnose dysautonomia is to do the tilt table test. This helps check for postural orthostatic tachycardia syndrome (POTS), one of the most common forms of dysautonomia. During this exam, the patient lies flat on a table. As the head of the table is raised to an almost upright position, their heart rate and blood pressure are measured. Signs of POTS include an abnormal heart rate when you’re upright, as well as a worsening of symptoms.

Exercise intolerance. A review published in the journal JAMA Network Open analyzed 38 studies on long COVID and exercise and found that patients with the condition had a much harder time doing physical activity. Exercise capacity was reduced to levels that would be expected about a decade later in life, according to study authors. 

“This is especially important because it can’t be explained just by deconditioning,” said Dr. Purpura. “Sometimes these patients are encouraged to ramp up exercise as a way to help with symptoms, but in these cases, encouraging them to push through can cause postexertional malaise, which sets patients back and delays recovery.”

While long COVID can cause dozens of symptoms, a paper Ms. McCorkell coauthored zeroed in on some of the most common ones: chest pain, heart palpitations, coughing, shortness of breath, belly pain, nausea, problems with mental skills, fatigue, disordered sleep, memory loss, ringing in the ears (tinnitus), erectile dysfunction, irregular menstruation, and worsened premenstrual syndrome.

While most primary care providers are familiar with some of these long COVID symptoms, they may not be aware of others. 

“COVID itself seems to cause hormonal changes that can lead to erection and menstrual cycle problems,” explained Dr. Putrino. “But these may not be picked up in a visit if the patient is complaining of other signs of long COVID.” 

It’s not just what symptoms are, but when they began to occur, he added. “Usually, these symptoms either start with the initial COVID infection, or begin sometime within 3 months after the acute COVID infection. That’s why it’s important for people with COVID to take notice of anything unusual that crops up within a month or 2 after getting sick.”
 

Can you prevent long COVID?

You can’t, but one of the best ways to reduce your risk is to get vaccinated. Getting at least one dose of a COVID vaccine before you test positive for COVID lowers your risk of long COVID by about 35% according to a study published in Antimicrobial Stewardship & Healthcare Epidemiology. Unvaccinated people who recovered from COVID, and then got a vaccine, lowered their own long COVID risk by 27%. 

In addition, a study published in JAMA Internal Medicine found that women who were infected with COVID were less likely to go on to get long COVID and/or have less debilitating symptoms if they had a healthy lifestyle, which included the following: a healthy weight (a body mass index between 18.5 and 24.7 kg/m²), never-smoker, moderate alcohol consumption, a high-quality diet, 7-9 hours of sleep a night, and at least 150 minutes per week of physical activity

But Ms. McCorkell noted that she herself had a healthy preinfection lifestyle but got long COVID anyway, suggesting these approaches don’t work for everyone.

“I think one reason my symptoms weren’t addressed by primary care physicians for so long is because they looked at me and saw that I was young and healthy, so they dismissed my reports as being all in my head,” she explained. “But we know now anyone can get long COVID, regardless of age, health status, or disease severity. That’s why it’s so important that primary care physicians be able to recognize symptoms.”

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

Lisa McCorkell had a mild bout of COVID-19 in March 2020. Young and healthy, she assumed that she would bounce back quickly. But when her fatigue, shortness of breath, and brain fog persisted, she realized that she most likely had long COVID. 

“Back then, we as patients basically coined the term,” she said. While her first primary care provider was sympathetic, they were unsure how to treat her. After her insurance changed, she ended up with a second primary care provider who didn’t take her symptoms seriously. “They dismissed my complaints and told me they were all in my head. I didn’t seek care for a while after that.”

Ms. McCorkell’s symptoms improved after her first COVID vaccine in the spring of 2021. She also finally found a new primary care doctor she could trust. But as one of the founders of the Patient-Led Research Collaborative, a group of researchers who study long COVID, she said many doctors still don’t know the hallmark symptoms of the condition or how to treat it. 

“There’s still a lack of education on what long COVID is, and the symptoms associated with it,” she said. “Many of the symptoms that occur in long COVID are symptoms of other chronic conditions, such as chronic fatigue syndrome, that are often dismissed. And even if providers believe patients and send them for a workup, many of the routine blood and imaging tests come back normal.”

The term “long COVID” emerged in May 2020. And though the condition was recognized within a few months of the start of the pandemic, doctors weren’t sure how to screen or treat it. 

While knowledge has developed since then, primary care doctors are still in a tough spot. They’re often the first providers that patients turn to when they have symptoms of long COVID. But with no standard diagnostic tests, treatment guidelines, standard care recommendations, and a large range of symptoms the condition can produce, doctors may not know what to look for, nor how to help patients.

“There’s no clear algorithm to pick up long COVID – there are no definite blood tests or biomarkers, or specific things to look for on a physical exam,” said Lawrence Purpura, MD, an infectious disease specialist and director of the long COVID clinic at Columbia University Medical Center, New York. “It’s a complicated disease that can impact every organ system of the body.”

Even so, emerging research has identified a checklist of sorts that doctors should consider when a patient seeks care for what appears to be long COVID. Among them: the key systems and organs impacted by the disease, the most common symptoms, useful therapeutic options for symptom management that have been found to help people with long COVID, and the best healthy lifestyle choices that doctors can recommend to help their patients 

Here’s a closer look at each of these aspects, based on research and interviews with experts, patients, and doctors. 
 

Key systems, organs impacted

About 10% of people who are infected with COVID-19 go on to have long COVID, according to a recent study that Ms. McCorkell helped coauthor. But more than 3 years into the pandemic, much about the condition is still a mystery.

COVID is a unique virus because it can spread far and wide in a patient’s body. A December 2022 study, published in Nature, autopsied 44 people who died of COVID and found that the virus could spread throughout the body and persist, in one case as long as 230 days after symptoms started. 

“We know that there are dozens of symptoms across multiple organ systems,” said Ms. McCorkell. “That makes it harder for a primary care physician to connect the dots and associate it with COVID.”

A paper published in Nature Medicine proposed one way to help guide diagnosis. It divided symptoms into four groups: 

• Cardiac and renal issues such as heart palpitations, chest pain, and kidney damage
• Sleep and anxiety problems like insomnia, waking up in the middle of the night, and anxiety
• In the musculoskeletal and nervous systems: musculoskeletal pain, osteoarthritis, and problems with mental skills
• In the digestive and respiratory systems: trouble breathing, asthma, stomach pain, nausea, and vomiting

There were also specific patterns in these groups. People in the first group were more likely to be older, male, have other conditions and to have been infected during the first wave of the COVID pandemic. People in the second group were over 60% female, and were more likely to have had previous allergies or asthma. The third group was also about 60% female, and many of them already had autoimmune conditions such as rheumatoid arthritis. Members of the fourth group – also 60% female – were the least likely of all the groups to have another condition.

This research is helpful, because it gives doctors a better sense of what conditions might make a patient more likely to get long COVID, as well as specific symptoms to look out for, said Steven Flanagan, MD, a physical medicine and rehabilitation specialist at New York University Langone Medical Center who also specializes in treating patients with long COVID. 

But the “challenge there, though, for health care providers is that not everyone will fall neatly into one of these categories,” he stressed.
 

Checklist of symptoms 

Although long COVID can be confusing, doctors say there are several symptoms that appear consistently that primary care providers should look out for, that could flag long COVID.

Postexertional malaise (PEM). This is different from simply feeling tired. “This term is often conflated with fatigue, but it’s very different,” said David Putrino, PhD, director of rehabilitation innovation at the Mount Sinai Health System in New York, who says that he sees it in about 90% of patients who come to his long COVID clinic. 

PEM is the worsening of symptoms after physical or mental exertion. This usually occurs a day or 2 after the activity, but it can last for days, and sometimes weeks. 

“It’s very different from fatigue, which is just a generalized tiredness, and exercise intolerance, where someone complains of not being able to do their usual workout on the treadmill,” he noted. “People with PEM are able to push through and do what they need to do, and then are hit with symptoms anywhere from 12 to 72 hours later.”

Dysautonomia. This is an umbrella term used to describe a dysfunction of the autonomic nervous system, which regulates bodily functions that you can’t control, like your blood pressure, heart rate, and breathing. This can cause symptoms such as heart palpitations, along with orthostatic intolerance, which means you can’t stand up for long without feeling faint or dizzy. 

“In my practice, about 80% of patients meet criteria for dysautonomia,” said Dr. Putrino. Other research has found that it’s present in about two-thirds of long COVID patients.

One relatively easy way primary care providers can diagnose dysautonomia is to do the tilt table test. This helps check for postural orthostatic tachycardia syndrome (POTS), one of the most common forms of dysautonomia. During this exam, the patient lies flat on a table. As the head of the table is raised to an almost upright position, their heart rate and blood pressure are measured. Signs of POTS include an abnormal heart rate when you’re upright, as well as a worsening of symptoms.

Exercise intolerance. A review published in the journal JAMA Network Open analyzed 38 studies on long COVID and exercise and found that patients with the condition had a much harder time doing physical activity. Exercise capacity was reduced to levels that would be expected about a decade later in life, according to study authors. 

“This is especially important because it can’t be explained just by deconditioning,” said Dr. Purpura. “Sometimes these patients are encouraged to ramp up exercise as a way to help with symptoms, but in these cases, encouraging them to push through can cause postexertional malaise, which sets patients back and delays recovery.”

While long COVID can cause dozens of symptoms, a paper Ms. McCorkell coauthored zeroed in on some of the most common ones: chest pain, heart palpitations, coughing, shortness of breath, belly pain, nausea, problems with mental skills, fatigue, disordered sleep, memory loss, ringing in the ears (tinnitus), erectile dysfunction, irregular menstruation, and worsened premenstrual syndrome.

While most primary care providers are familiar with some of these long COVID symptoms, they may not be aware of others. 

“COVID itself seems to cause hormonal changes that can lead to erection and menstrual cycle problems,” explained Dr. Putrino. “But these may not be picked up in a visit if the patient is complaining of other signs of long COVID.” 

It’s not just what symptoms are, but when they began to occur, he added. “Usually, these symptoms either start with the initial COVID infection, or begin sometime within 3 months after the acute COVID infection. That’s why it’s important for people with COVID to take notice of anything unusual that crops up within a month or 2 after getting sick.”
 

Can you prevent long COVID?

You can’t, but one of the best ways to reduce your risk is to get vaccinated. Getting at least one dose of a COVID vaccine before you test positive for COVID lowers your risk of long COVID by about 35% according to a study published in Antimicrobial Stewardship & Healthcare Epidemiology. Unvaccinated people who recovered from COVID, and then got a vaccine, lowered their own long COVID risk by 27%. 

In addition, a study published in JAMA Internal Medicine found that women who were infected with COVID were less likely to go on to get long COVID and/or have less debilitating symptoms if they had a healthy lifestyle, which included the following: a healthy weight (a body mass index between 18.5 and 24.7 kg/m²), never-smoker, moderate alcohol consumption, a high-quality diet, 7-9 hours of sleep a night, and at least 150 minutes per week of physical activity

But Ms. McCorkell noted that she herself had a healthy preinfection lifestyle but got long COVID anyway, suggesting these approaches don’t work for everyone.

“I think one reason my symptoms weren’t addressed by primary care physicians for so long is because they looked at me and saw that I was young and healthy, so they dismissed my reports as being all in my head,” she explained. “But we know now anyone can get long COVID, regardless of age, health status, or disease severity. That’s why it’s so important that primary care physicians be able to recognize symptoms.”

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

Investigators found that simultaneous infection with adeno-associated virus type 2 (AAV2) and certain other viruses is associated with the outbreak of mysterious pediatric hepatitis cases worldwide.

Coinfection with AAV2 and a human adenovirus (HAdV), in particular, appears to leave some children more vulnerable to this acute hepatitis of unknown origin, researchers reported in three studies published online in Nature. Coinfection with Epstein-Barr virus (EBV), herpes, and enterovirus also were found. Adeno-associated viruses are not considered pathogenic on their own and require a “helper” virus for productive infection.

“I am quite confident that we have identified the key viruses involved because we used a comprehensive metagenomic sequencing approach to look for potential infections from any virus or non-viral pathogen,” Charles Chiu, MD, PhD, senior author and professor of laboratory medicine and medicine/infectious diseases at the University of California, San Francisco, said in an interview.

Dr. Chiu and colleagues propose that lockdowns and social isolation during the COVID-19 pandemic left more children susceptible. A major aspect of immunity in childhood is the adaptive immune response – both cell-mediated and humoral – shaped in part by exposure to viruses and other pathogens early in life, Dr. Chiu said.

“Due to COVID-19, a large population of children did not experience this, so it is possible once restrictions were lifted, they were suddenly exposed over a short period of time to multiple viruses that, in a poorly trained immune system, would have increased their risk of developing severe disease,” he said.

This theory has been popular, especially because cases of unexplained acute hepatitis peaked during the height of the COVID-19 pandemic when isolation was common, William F. Balistreri, MD, who was not affiliated with the study, told this news organization. Dr. Balistreri is professor of pediatrics and director emeritus of the Pediatric Liver Care Center at Cincinnati Children’s Hospital Medical Center.
 

Identifying the culprits

Determining what factors might be involved was the main aim of the etiology study by Dr. Chiu and colleagues published online  in Nature.

The journal simultaneously published a genomic study confirming the presence of AAV2 and other suspected viruses and a genomic and laboratory study further corroborating the results.

More than 1,000 children worldwide had been diagnosed with unexplained acute pediatric hepatitis as of August 2022. In the United States, there have been 358 cases, including 22 in which the child required a liver transplant and 13 in which the child died.

This new form of hepatitis, first detected in October 2021, does not fit into existing classifications of types A through E, so some researchers refer to the condition as acute non–A-E hepatitis of unknown etiology.

The investigators started with an important clue based on previous research: the role adenovirus might play. Dr. Chiu and colleagues assessed 27 blood, stool, and other samples from 16 affected children who each previously tested positive for adenoviruses. The researchers included cases of the condition identified up until May 22, 2022. The median age was 3 years, and approximately half were boys.

They compared viruses present in these children with those in 113 controls without the mysterious hepatitis. The control group consisted of 15 children who were hospitalized with a nonhepatitis inflammatory condition, 27 with a noninflammatory condition, 30 with acute hepatitis of known origin, 12 with acute gastroenteritis and an HAdV-positive stool sample, and 11 with acute gastroenteritis and an HAdV-negative stool sample, as well as 18 blood donors. The median age was 7 years.

The researchers assessed samples using multiple technologies, including metagenomic sequencing, tiling multiplex polymerase chain reaction (PCR) amplicon sequencing, metagenomic sequencing with probe capture viral enrichment, and virus-specific PCR. Many of these advanced techniques were not even available 5-10 years ago, Dr. Chiu said.
 

Key findings

Blood samples were available for 14 of the 16 children with acute hepatitis of unknown origin. Among this study group, AAV2 was found in 13 (93%). No other adeno-associated viruses were found. HAdV was detected in all 14 children: HAdV-41 in 11 children and HAdV-40, HAdV-2, and an untypeable strain in one child each. This finding was not intuitive because HAdVs are not commonly associated with hepatitis, according to the study.

AAV2 was much less common in the control group. For example, it was found in none of the children with hepatitis of known origin and in only four children (3.5%) with acute gastroenteritis and HAdV-positive stool. Of note, neither AAV2 nor HAdV-41 was detected among the 30 pediatric controls with acute hepatitis of defined etiology nor 42 of the hospitalized children without hepatitis, the researchers wrote.

In the search for other viruses in the study group, metagenomic sequencing detected EBV, also known as human herpesvirus (HHV)–4, in two children, cytomegalovirus (CMV) in one child, and HAdV type C in one child.

Analysis of whole blood revealed enterovirus A71 in one patient. HAdV type C also was detected in one child on the basis of a nasopharyngeal swab, and picobirnavirus was found in a stool sample from another patient.

Researchers conducted virus-specific PCR tests on both patient groups to identify additional viruses that may be associated with the unexplained acute hepatitis. EBV/HHV-4 was detected in 11 children (79%) in the study group vs. in 1 child (0.88%) in the control group. HHV-6 was detected in seven children (50%) in the study group, compared with one case in the control group. CMV was not detected in any of the children in the study group versus vs. two children (1.8%) in the control group.

“Although we found significant differences in the relative proportions of EBV and HHV-6 in cases compared to controls, we do not believe that these viruses are the primary cause of acute severe hepatitis,” the researchers wrote. The viral load of the two herpes viruses were very low, so the positive results could represent integrated proviral DNA rather than bona fide low-level herpesvirus. In addition, herpesvirus can be reactivated by an inflammatory condition.

“Nevertheless, it is striking that among the 16 cases (in the study group), dual, triple, or quadruple infections with AAV2, adenovirus, and one or both herpesviruses were detected in whole blood from at least 12 cases (75%),” the researchers wrote.
 

Management of suspected hepatitis

The study’s key messages for parents and health care providers “are awareness and reassurance,” Dr. Balistreri said in an interview.

Vigilance also is warranted if a child develops prodromal symptoms including respiratory and/or gastrointestinal signs such as nausea, vomiting, diarrhea, and abdomen pain, he said. If jaundice or scleral icterus is noted, then hepatitis should be suspected.

Some patients need hospitalization and quickly recover. In very rare instances, the inflammation may progress to liver failure and transplantation, Dr. Balistreri said.

“Reassurance is based on the good news that most children with acute hepatitis get better. If a case arises, it is good practice to keep the child well hydrated, offer a normal diet, and avoid medications that may be cleared by the liver,” Dr. Balistreri added.

“Of course, COVID-19 vaccination is strongly suggested,” he said.

Some existing treatments could help against unexplained acute hepatitis, Dr. Chiu said. “The findings suggest that antiviral therapy might be effective in these cases.”

Cidofovir can be effective against adenovirus, according to a report in The Lancet . Similarly, ganciclovir or valganciclovir may have activity against EBV/HHV-4 or HHV-6, Dr. Chiu said. “However, antiviral therapy is not available for AAV2.”

The three studies published in Nature “offer compelling evidence, from disparate centers, of a linkage of outbreak cases to infection by AAV2,” Dr. Balistreri said. The studies also suggest that liver injury was related to abnormal immune responses. This is an important clinical distinction, indicating a potential therapeutic approach to future cases – immunosuppression rather than anti-adenoviral agents, he said.

“We await further studies of this important concept,” Dr. Balistreri said.

Many unanswered questions remain about the condition’s etiology, he added. Is there a synergy or shared susceptibility related to SARS-CoV-2? Is the COVID-19 virus helping to trigger these infections, or does it increase the risk once infected? Also, are other epigenetic factors or viruses involved?
 

Moving forward

The next steps in the research could go beyond identifying presence of these different viruses and determining which one(s) are contributing the most to the acute pediatric hepatitis, Dr. Chiu said.

The researchers also would like to test early results from the United Kingdom that identified a potential association of acute severe hepatitis with the presence of human leukocyte antigen genotype DRB1*04:01, he added.

They also might investigate other unintended potential clinical consequences of the COVID-19 pandemic, including long COVID and resurgence of infections from other viruses, such as respiratory syncytial virus, influenza, and enterovirus D68.

The study was supported by the Centers for Disease Control and Prevention, the National Institutes of Health, the Department of Homeland Security, and other grants. Dr. Chiu is a founder of Delve Bio and on the scientific advisory board for Delve Bio, Mammoth Biosciences, BiomeSense, and Poppy Health. Dr. Balistreri had no relevant disclosures.
 

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

Investigators found that simultaneous infection with adeno-associated virus type 2 (AAV2) and certain other viruses is associated with the outbreak of mysterious pediatric hepatitis cases worldwide.

Coinfection with AAV2 and a human adenovirus (HAdV), in particular, appears to leave some children more vulnerable to this acute hepatitis of unknown origin, researchers reported in three studies published online in Nature. Coinfection with Epstein-Barr virus (EBV), herpes, and enterovirus also were found. Adeno-associated viruses are not considered pathogenic on their own and require a “helper” virus for productive infection.

“I am quite confident that we have identified the key viruses involved because we used a comprehensive metagenomic sequencing approach to look for potential infections from any virus or non-viral pathogen,” Charles Chiu, MD, PhD, senior author and professor of laboratory medicine and medicine/infectious diseases at the University of California, San Francisco, said in an interview.

Dr. Chiu and colleagues propose that lockdowns and social isolation during the COVID-19 pandemic left more children susceptible. A major aspect of immunity in childhood is the adaptive immune response – both cell-mediated and humoral – shaped in part by exposure to viruses and other pathogens early in life, Dr. Chiu said.

“Due to COVID-19, a large population of children did not experience this, so it is possible once restrictions were lifted, they were suddenly exposed over a short period of time to multiple viruses that, in a poorly trained immune system, would have increased their risk of developing severe disease,” he said.

This theory has been popular, especially because cases of unexplained acute hepatitis peaked during the height of the COVID-19 pandemic when isolation was common, William F. Balistreri, MD, who was not affiliated with the study, told this news organization. Dr. Balistreri is professor of pediatrics and director emeritus of the Pediatric Liver Care Center at Cincinnati Children’s Hospital Medical Center.
 

Identifying the culprits

Determining what factors might be involved was the main aim of the etiology study by Dr. Chiu and colleagues published online  in Nature.

The journal simultaneously published a genomic study confirming the presence of AAV2 and other suspected viruses and a genomic and laboratory study further corroborating the results.

More than 1,000 children worldwide had been diagnosed with unexplained acute pediatric hepatitis as of August 2022. In the United States, there have been 358 cases, including 22 in which the child required a liver transplant and 13 in which the child died.

This new form of hepatitis, first detected in October 2021, does not fit into existing classifications of types A through E, so some researchers refer to the condition as acute non–A-E hepatitis of unknown etiology.

The investigators started with an important clue based on previous research: the role adenovirus might play. Dr. Chiu and colleagues assessed 27 blood, stool, and other samples from 16 affected children who each previously tested positive for adenoviruses. The researchers included cases of the condition identified up until May 22, 2022. The median age was 3 years, and approximately half were boys.

They compared viruses present in these children with those in 113 controls without the mysterious hepatitis. The control group consisted of 15 children who were hospitalized with a nonhepatitis inflammatory condition, 27 with a noninflammatory condition, 30 with acute hepatitis of known origin, 12 with acute gastroenteritis and an HAdV-positive stool sample, and 11 with acute gastroenteritis and an HAdV-negative stool sample, as well as 18 blood donors. The median age was 7 years.

The researchers assessed samples using multiple technologies, including metagenomic sequencing, tiling multiplex polymerase chain reaction (PCR) amplicon sequencing, metagenomic sequencing with probe capture viral enrichment, and virus-specific PCR. Many of these advanced techniques were not even available 5-10 years ago, Dr. Chiu said.
 

Key findings

Blood samples were available for 14 of the 16 children with acute hepatitis of unknown origin. Among this study group, AAV2 was found in 13 (93%). No other adeno-associated viruses were found. HAdV was detected in all 14 children: HAdV-41 in 11 children and HAdV-40, HAdV-2, and an untypeable strain in one child each. This finding was not intuitive because HAdVs are not commonly associated with hepatitis, according to the study.

AAV2 was much less common in the control group. For example, it was found in none of the children with hepatitis of known origin and in only four children (3.5%) with acute gastroenteritis and HAdV-positive stool. Of note, neither AAV2 nor HAdV-41 was detected among the 30 pediatric controls with acute hepatitis of defined etiology nor 42 of the hospitalized children without hepatitis, the researchers wrote.

In the search for other viruses in the study group, metagenomic sequencing detected EBV, also known as human herpesvirus (HHV)–4, in two children, cytomegalovirus (CMV) in one child, and HAdV type C in one child.

Analysis of whole blood revealed enterovirus A71 in one patient. HAdV type C also was detected in one child on the basis of a nasopharyngeal swab, and picobirnavirus was found in a stool sample from another patient.

Researchers conducted virus-specific PCR tests on both patient groups to identify additional viruses that may be associated with the unexplained acute hepatitis. EBV/HHV-4 was detected in 11 children (79%) in the study group vs. in 1 child (0.88%) in the control group. HHV-6 was detected in seven children (50%) in the study group, compared with one case in the control group. CMV was not detected in any of the children in the study group versus vs. two children (1.8%) in the control group.

“Although we found significant differences in the relative proportions of EBV and HHV-6 in cases compared to controls, we do not believe that these viruses are the primary cause of acute severe hepatitis,” the researchers wrote. The viral load of the two herpes viruses were very low, so the positive results could represent integrated proviral DNA rather than bona fide low-level herpesvirus. In addition, herpesvirus can be reactivated by an inflammatory condition.

“Nevertheless, it is striking that among the 16 cases (in the study group), dual, triple, or quadruple infections with AAV2, adenovirus, and one or both herpesviruses were detected in whole blood from at least 12 cases (75%),” the researchers wrote.
 

Management of suspected hepatitis

The study’s key messages for parents and health care providers “are awareness and reassurance,” Dr. Balistreri said in an interview.

Vigilance also is warranted if a child develops prodromal symptoms including respiratory and/or gastrointestinal signs such as nausea, vomiting, diarrhea, and abdomen pain, he said. If jaundice or scleral icterus is noted, then hepatitis should be suspected.

Some patients need hospitalization and quickly recover. In very rare instances, the inflammation may progress to liver failure and transplantation, Dr. Balistreri said.

“Reassurance is based on the good news that most children with acute hepatitis get better. If a case arises, it is good practice to keep the child well hydrated, offer a normal diet, and avoid medications that may be cleared by the liver,” Dr. Balistreri added.

“Of course, COVID-19 vaccination is strongly suggested,” he said.

Some existing treatments could help against unexplained acute hepatitis, Dr. Chiu said. “The findings suggest that antiviral therapy might be effective in these cases.”

Cidofovir can be effective against adenovirus, according to a report in The Lancet . Similarly, ganciclovir or valganciclovir may have activity against EBV/HHV-4 or HHV-6, Dr. Chiu said. “However, antiviral therapy is not available for AAV2.”

The three studies published in Nature “offer compelling evidence, from disparate centers, of a linkage of outbreak cases to infection by AAV2,” Dr. Balistreri said. The studies also suggest that liver injury was related to abnormal immune responses. This is an important clinical distinction, indicating a potential therapeutic approach to future cases – immunosuppression rather than anti-adenoviral agents, he said.

“We await further studies of this important concept,” Dr. Balistreri said.

Many unanswered questions remain about the condition’s etiology, he added. Is there a synergy or shared susceptibility related to SARS-CoV-2? Is the COVID-19 virus helping to trigger these infections, or does it increase the risk once infected? Also, are other epigenetic factors or viruses involved?
 

Moving forward

The next steps in the research could go beyond identifying presence of these different viruses and determining which one(s) are contributing the most to the acute pediatric hepatitis, Dr. Chiu said.

The researchers also would like to test early results from the United Kingdom that identified a potential association of acute severe hepatitis with the presence of human leukocyte antigen genotype DRB1*04:01, he added.

They also might investigate other unintended potential clinical consequences of the COVID-19 pandemic, including long COVID and resurgence of infections from other viruses, such as respiratory syncytial virus, influenza, and enterovirus D68.

The study was supported by the Centers for Disease Control and Prevention, the National Institutes of Health, the Department of Homeland Security, and other grants. Dr. Chiu is a founder of Delve Bio and on the scientific advisory board for Delve Bio, Mammoth Biosciences, BiomeSense, and Poppy Health. Dr. Balistreri had no relevant disclosures.
 

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

Investigators found that simultaneous infection with adeno-associated virus type 2 (AAV2) and certain other viruses is associated with the outbreak of mysterious pediatric hepatitis cases worldwide.

Coinfection with AAV2 and a human adenovirus (HAdV), in particular, appears to leave some children more vulnerable to this acute hepatitis of unknown origin, researchers reported in three studies published online in Nature. Coinfection with Epstein-Barr virus (EBV), herpes, and enterovirus also were found. Adeno-associated viruses are not considered pathogenic on their own and require a “helper” virus for productive infection.

“I am quite confident that we have identified the key viruses involved because we used a comprehensive metagenomic sequencing approach to look for potential infections from any virus or non-viral pathogen,” Charles Chiu, MD, PhD, senior author and professor of laboratory medicine and medicine/infectious diseases at the University of California, San Francisco, said in an interview.

Dr. Chiu and colleagues propose that lockdowns and social isolation during the COVID-19 pandemic left more children susceptible. A major aspect of immunity in childhood is the adaptive immune response – both cell-mediated and humoral – shaped in part by exposure to viruses and other pathogens early in life, Dr. Chiu said.

“Due to COVID-19, a large population of children did not experience this, so it is possible once restrictions were lifted, they were suddenly exposed over a short period of time to multiple viruses that, in a poorly trained immune system, would have increased their risk of developing severe disease,” he said.

This theory has been popular, especially because cases of unexplained acute hepatitis peaked during the height of the COVID-19 pandemic when isolation was common, William F. Balistreri, MD, who was not affiliated with the study, told this news organization. Dr. Balistreri is professor of pediatrics and director emeritus of the Pediatric Liver Care Center at Cincinnati Children’s Hospital Medical Center.
 

Identifying the culprits

Determining what factors might be involved was the main aim of the etiology study by Dr. Chiu and colleagues published online  in Nature.

The journal simultaneously published a genomic study confirming the presence of AAV2 and other suspected viruses and a genomic and laboratory study further corroborating the results.

More than 1,000 children worldwide had been diagnosed with unexplained acute pediatric hepatitis as of August 2022. In the United States, there have been 358 cases, including 22 in which the child required a liver transplant and 13 in which the child died.

This new form of hepatitis, first detected in October 2021, does not fit into existing classifications of types A through E, so some researchers refer to the condition as acute non–A-E hepatitis of unknown etiology.

The investigators started with an important clue based on previous research: the role adenovirus might play. Dr. Chiu and colleagues assessed 27 blood, stool, and other samples from 16 affected children who each previously tested positive for adenoviruses. The researchers included cases of the condition identified up until May 22, 2022. The median age was 3 years, and approximately half were boys.

They compared viruses present in these children with those in 113 controls without the mysterious hepatitis. The control group consisted of 15 children who were hospitalized with a nonhepatitis inflammatory condition, 27 with a noninflammatory condition, 30 with acute hepatitis of known origin, 12 with acute gastroenteritis and an HAdV-positive stool sample, and 11 with acute gastroenteritis and an HAdV-negative stool sample, as well as 18 blood donors. The median age was 7 years.

The researchers assessed samples using multiple technologies, including metagenomic sequencing, tiling multiplex polymerase chain reaction (PCR) amplicon sequencing, metagenomic sequencing with probe capture viral enrichment, and virus-specific PCR. Many of these advanced techniques were not even available 5-10 years ago, Dr. Chiu said.
 

Key findings

Blood samples were available for 14 of the 16 children with acute hepatitis of unknown origin. Among this study group, AAV2 was found in 13 (93%). No other adeno-associated viruses were found. HAdV was detected in all 14 children: HAdV-41 in 11 children and HAdV-40, HAdV-2, and an untypeable strain in one child each. This finding was not intuitive because HAdVs are not commonly associated with hepatitis, according to the study.

AAV2 was much less common in the control group. For example, it was found in none of the children with hepatitis of known origin and in only four children (3.5%) with acute gastroenteritis and HAdV-positive stool. Of note, neither AAV2 nor HAdV-41 was detected among the 30 pediatric controls with acute hepatitis of defined etiology nor 42 of the hospitalized children without hepatitis, the researchers wrote.

In the search for other viruses in the study group, metagenomic sequencing detected EBV, also known as human herpesvirus (HHV)–4, in two children, cytomegalovirus (CMV) in one child, and HAdV type C in one child.

Analysis of whole blood revealed enterovirus A71 in one patient. HAdV type C also was detected in one child on the basis of a nasopharyngeal swab, and picobirnavirus was found in a stool sample from another patient.

Researchers conducted virus-specific PCR tests on both patient groups to identify additional viruses that may be associated with the unexplained acute hepatitis. EBV/HHV-4 was detected in 11 children (79%) in the study group vs. in 1 child (0.88%) in the control group. HHV-6 was detected in seven children (50%) in the study group, compared with one case in the control group. CMV was not detected in any of the children in the study group versus vs. two children (1.8%) in the control group.

“Although we found significant differences in the relative proportions of EBV and HHV-6 in cases compared to controls, we do not believe that these viruses are the primary cause of acute severe hepatitis,” the researchers wrote. The viral load of the two herpes viruses were very low, so the positive results could represent integrated proviral DNA rather than bona fide low-level herpesvirus. In addition, herpesvirus can be reactivated by an inflammatory condition.

“Nevertheless, it is striking that among the 16 cases (in the study group), dual, triple, or quadruple infections with AAV2, adenovirus, and one or both herpesviruses were detected in whole blood from at least 12 cases (75%),” the researchers wrote.
 

Management of suspected hepatitis

The study’s key messages for parents and health care providers “are awareness and reassurance,” Dr. Balistreri said in an interview.

Vigilance also is warranted if a child develops prodromal symptoms including respiratory and/or gastrointestinal signs such as nausea, vomiting, diarrhea, and abdomen pain, he said. If jaundice or scleral icterus is noted, then hepatitis should be suspected.

Some patients need hospitalization and quickly recover. In very rare instances, the inflammation may progress to liver failure and transplantation, Dr. Balistreri said.

“Reassurance is based on the good news that most children with acute hepatitis get better. If a case arises, it is good practice to keep the child well hydrated, offer a normal diet, and avoid medications that may be cleared by the liver,” Dr. Balistreri added.

“Of course, COVID-19 vaccination is strongly suggested,” he said.

Some existing treatments could help against unexplained acute hepatitis, Dr. Chiu said. “The findings suggest that antiviral therapy might be effective in these cases.”

Cidofovir can be effective against adenovirus, according to a report in The Lancet . Similarly, ganciclovir or valganciclovir may have activity against EBV/HHV-4 or HHV-6, Dr. Chiu said. “However, antiviral therapy is not available for AAV2.”

The three studies published in Nature “offer compelling evidence, from disparate centers, of a linkage of outbreak cases to infection by AAV2,” Dr. Balistreri said. The studies also suggest that liver injury was related to abnormal immune responses. This is an important clinical distinction, indicating a potential therapeutic approach to future cases – immunosuppression rather than anti-adenoviral agents, he said.

“We await further studies of this important concept,” Dr. Balistreri said.

Many unanswered questions remain about the condition’s etiology, he added. Is there a synergy or shared susceptibility related to SARS-CoV-2? Is the COVID-19 virus helping to trigger these infections, or does it increase the risk once infected? Also, are other epigenetic factors or viruses involved?
 

Moving forward

The next steps in the research could go beyond identifying presence of these different viruses and determining which one(s) are contributing the most to the acute pediatric hepatitis, Dr. Chiu said.

The researchers also would like to test early results from the United Kingdom that identified a potential association of acute severe hepatitis with the presence of human leukocyte antigen genotype DRB1*04:01, he added.

They also might investigate other unintended potential clinical consequences of the COVID-19 pandemic, including long COVID and resurgence of infections from other viruses, such as respiratory syncytial virus, influenza, and enterovirus D68.

The study was supported by the Centers for Disease Control and Prevention, the National Institutes of Health, the Department of Homeland Security, and other grants. Dr. Chiu is a founder of Delve Bio and on the scientific advisory board for Delve Bio, Mammoth Biosciences, BiomeSense, and Poppy Health. Dr. Balistreri had no relevant disclosures.
 

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

Contaminated, deadly, and blindness-causing eyedrops that were recalled earlier this year were made in India at a factory not inspected by the U.S. Food and Drug Administration, according to a new report. 

Scientists are concerned that the once-rare treatment-resistant bacteria found in the eyedrops can spread person-to-person, posing a risk of becoming a recurrent problem in the United States, The New York Times reported.

In January, EzriCare and Delsam Pharma artificial tears and ointment products were recalled after being linked to the bacterium P. aeruginosa. The bacteria have caused at least 68 infections, including three deaths and at least eight cases of blindness. The eyedrops were imported to the United States from India, and many of the cases occurred after the bacteria spread person-to-person at a long-term care facility in Connecticut, according to the Times, which cited FDA and Centers for Disease Control and Prevention lead investigator Maroya Walters, PhD.

Dr. Walters said the cases that caused death or blindness were traced to the EzriCare artificial tears product.

“It’s very hard to get rid of,” University of North Carolina at Chapel Hill infectious disease specialist David van Duin, MD, PhD, told the Times, noting that the bacteria cling to sink drains, water faucets, and other moist places. 

The FDA said it had halted the import of the recalled products and has since visited the plant in India where they were made, which is owned by Global Pharma Healthcare. In a citation to the company dated March 2, the FDA listed nearly a dozen problems, such as dirty equipment and the absence of safety procedures and tests. 

A version of this article originally appeared on WebMD.com.

Contaminated, deadly, and blindness-causing eyedrops that were recalled earlier this year were made in India at a factory not inspected by the U.S. Food and Drug Administration, according to a new report. 

Scientists are concerned that the once-rare treatment-resistant bacteria found in the eyedrops can spread person-to-person, posing a risk of becoming a recurrent problem in the United States, The New York Times reported.

In January, EzriCare and Delsam Pharma artificial tears and ointment products were recalled after being linked to the bacterium P. aeruginosa. The bacteria have caused at least 68 infections, including three deaths and at least eight cases of blindness. The eyedrops were imported to the United States from India, and many of the cases occurred after the bacteria spread person-to-person at a long-term care facility in Connecticut, according to the Times, which cited FDA and Centers for Disease Control and Prevention lead investigator Maroya Walters, PhD.

Dr. Walters said the cases that caused death or blindness were traced to the EzriCare artificial tears product.

“It’s very hard to get rid of,” University of North Carolina at Chapel Hill infectious disease specialist David van Duin, MD, PhD, told the Times, noting that the bacteria cling to sink drains, water faucets, and other moist places. 

The FDA said it had halted the import of the recalled products and has since visited the plant in India where they were made, which is owned by Global Pharma Healthcare. In a citation to the company dated March 2, the FDA listed nearly a dozen problems, such as dirty equipment and the absence of safety procedures and tests. 

A version of this article originally appeared on WebMD.com.

Contaminated, deadly, and blindness-causing eyedrops that were recalled earlier this year were made in India at a factory not inspected by the U.S. Food and Drug Administration, according to a new report. 

Scientists are concerned that the once-rare treatment-resistant bacteria found in the eyedrops can spread person-to-person, posing a risk of becoming a recurrent problem in the United States, The New York Times reported.

In January, EzriCare and Delsam Pharma artificial tears and ointment products were recalled after being linked to the bacterium P. aeruginosa. The bacteria have caused at least 68 infections, including three deaths and at least eight cases of blindness. The eyedrops were imported to the United States from India, and many of the cases occurred after the bacteria spread person-to-person at a long-term care facility in Connecticut, according to the Times, which cited FDA and Centers for Disease Control and Prevention lead investigator Maroya Walters, PhD.

Dr. Walters said the cases that caused death or blindness were traced to the EzriCare artificial tears product.

“It’s very hard to get rid of,” University of North Carolina at Chapel Hill infectious disease specialist David van Duin, MD, PhD, told the Times, noting that the bacteria cling to sink drains, water faucets, and other moist places. 

The FDA said it had halted the import of the recalled products and has since visited the plant in India where they were made, which is owned by Global Pharma Healthcare. In a citation to the company dated March 2, the FDA listed nearly a dozen problems, such as dirty equipment and the absence of safety procedures and tests. 

A version of this article originally appeared on WebMD.com.

The Centers for Disease Control and Prevention has updated its COVID-19 booster shot guidelines to clarify that only a single dose of the latest bivalent booster is recommended at this time. 

“If you have completed your updated booster dose, you are currently up to date. There is not a recommendation to get another updated booster dose,” the CDC website  now explains.

In January, the nation’s expert COVID panel recommended that the United States move toward an annual COVID booster shot in the fall, similar to the annual flu shot, that targets the most widely circulating strains of the virus. Recent studies have shown that booster strength wanes after a few months, spurring discussions of whether people at high risk of getting a severe case of COVID may need more than one annual shot.

September was the last time a new booster dose was recommended, when, at the time, the bivalent  booster was released, offering new protection against Omicron variants of the virus. Health officials’ focus is now shifting from preventing infections to reducing the likelihood of severe ones, the San Francisco Chronicle reported.

“The bottom line is that there is some waning of protection for those who got boosters more than six months ago and haven’t had an intervening infection,” said Bob Wachter, MD, head of the University of California–San Francisco’s department of medicine, according to the Chronicle. “But the level of protection versus severe infection continues to be fairly high, good enough that people who aren’t at super high risk are probably fine waiting until a new booster comes out in the fall.”

The Wall Street Journal reported recently that many people have been asking their doctors to give them another booster, which is not authorized by the Food and Drug Administration. 

About 8 in 10 people in the United States got the initial set of COVID-19 vaccines, which were first approved in August 2021. But just 16.4% of people in the United States have gotten the latest booster that was released in September, CDC data show.  

A version of this article originally appeared on WebMD.com.

The Centers for Disease Control and Prevention has updated its COVID-19 booster shot guidelines to clarify that only a single dose of the latest bivalent booster is recommended at this time. 

“If you have completed your updated booster dose, you are currently up to date. There is not a recommendation to get another updated booster dose,” the CDC website  now explains.

In January, the nation’s expert COVID panel recommended that the United States move toward an annual COVID booster shot in the fall, similar to the annual flu shot, that targets the most widely circulating strains of the virus. Recent studies have shown that booster strength wanes after a few months, spurring discussions of whether people at high risk of getting a severe case of COVID may need more than one annual shot.

September was the last time a new booster dose was recommended, when, at the time, the bivalent  booster was released, offering new protection against Omicron variants of the virus. Health officials’ focus is now shifting from preventing infections to reducing the likelihood of severe ones, the San Francisco Chronicle reported.

“The bottom line is that there is some waning of protection for those who got boosters more than six months ago and haven’t had an intervening infection,” said Bob Wachter, MD, head of the University of California–San Francisco’s department of medicine, according to the Chronicle. “But the level of protection versus severe infection continues to be fairly high, good enough that people who aren’t at super high risk are probably fine waiting until a new booster comes out in the fall.”

The Wall Street Journal reported recently that many people have been asking their doctors to give them another booster, which is not authorized by the Food and Drug Administration. 

About 8 in 10 people in the United States got the initial set of COVID-19 vaccines, which were first approved in August 2021. But just 16.4% of people in the United States have gotten the latest booster that was released in September, CDC data show.  

A version of this article originally appeared on WebMD.com.

The Centers for Disease Control and Prevention has updated its COVID-19 booster shot guidelines to clarify that only a single dose of the latest bivalent booster is recommended at this time. 

“If you have completed your updated booster dose, you are currently up to date. There is not a recommendation to get another updated booster dose,” the CDC website  now explains.

In January, the nation’s expert COVID panel recommended that the United States move toward an annual COVID booster shot in the fall, similar to the annual flu shot, that targets the most widely circulating strains of the virus. Recent studies have shown that booster strength wanes after a few months, spurring discussions of whether people at high risk of getting a severe case of COVID may need more than one annual shot.

September was the last time a new booster dose was recommended, when, at the time, the bivalent  booster was released, offering new protection against Omicron variants of the virus. Health officials’ focus is now shifting from preventing infections to reducing the likelihood of severe ones, the San Francisco Chronicle reported.

“The bottom line is that there is some waning of protection for those who got boosters more than six months ago and haven’t had an intervening infection,” said Bob Wachter, MD, head of the University of California–San Francisco’s department of medicine, according to the Chronicle. “But the level of protection versus severe infection continues to be fairly high, good enough that people who aren’t at super high risk are probably fine waiting until a new booster comes out in the fall.”

The Wall Street Journal reported recently that many people have been asking their doctors to give them another booster, which is not authorized by the Food and Drug Administration. 

About 8 in 10 people in the United States got the initial set of COVID-19 vaccines, which were first approved in August 2021. But just 16.4% of people in the United States have gotten the latest booster that was released in September, CDC data show.  

A version of this article originally appeared on WebMD.com.

People who had low hopes from a COVID-19 vaccine reported more negative side effects from the shots in a new study.

It fits the psychosomatic role of “nocebo effects,” the researchers say – when “psychological characteristics including anxiety, depression, and the tendency to amplify benign bodily sensations” cause participants to report more bad effects than others. 

In August 2021, researchers in Hamburg, Germany, followed 1,678 adults getting a second shot of Pfizer or Moderna mRNA-based vaccines. Participants reported symptoms in a diary, starting 2 weeks ahead of the vaccinations and going 7 days afterward.

Some participants said they weren’t expecting much benefit. Researchers said these people were more likely to “catastrophize instead of normalize benign bodily sensations.” People who’d had a bad experience with their first shot were more likely to say they felt aches, pains, and other side effects from the second.

The research was published in JAMA Network Open.

“Clinician-patient interactions and public vaccine campaigns may both benefit from these insights by optimizing and contextualizing information provided about COVID-19 vaccines,” the researchers said. “Unfavorable nocebo-related adverse effects could then be prevented, and overall vaccine acceptance could be improved.”

More than half of participants, 52.1%, expected bad effects to happen from the shot. Another 7.6% said they would be hospitalized from those bad effects, and 10.6% said the effects would last in the long term.

The Washington Times reported that “substantial numbers of patients reported adverse effects after vaccination,” but people with positive expectations reported them as minor. “Those who scored higher for anxiety, depression, and other psychosocial factors were more likely to flag these issues as severe.”
 

A version of this article originally appeared on WebMD.com.

People who had low hopes from a COVID-19 vaccine reported more negative side effects from the shots in a new study.

It fits the psychosomatic role of “nocebo effects,” the researchers say – when “psychological characteristics including anxiety, depression, and the tendency to amplify benign bodily sensations” cause participants to report more bad effects than others. 

In August 2021, researchers in Hamburg, Germany, followed 1,678 adults getting a second shot of Pfizer or Moderna mRNA-based vaccines. Participants reported symptoms in a diary, starting 2 weeks ahead of the vaccinations and going 7 days afterward.

Some participants said they weren’t expecting much benefit. Researchers said these people were more likely to “catastrophize instead of normalize benign bodily sensations.” People who’d had a bad experience with their first shot were more likely to say they felt aches, pains, and other side effects from the second.

The research was published in JAMA Network Open.

“Clinician-patient interactions and public vaccine campaigns may both benefit from these insights by optimizing and contextualizing information provided about COVID-19 vaccines,” the researchers said. “Unfavorable nocebo-related adverse effects could then be prevented, and overall vaccine acceptance could be improved.”

More than half of participants, 52.1%, expected bad effects to happen from the shot. Another 7.6% said they would be hospitalized from those bad effects, and 10.6% said the effects would last in the long term.

The Washington Times reported that “substantial numbers of patients reported adverse effects after vaccination,” but people with positive expectations reported them as minor. “Those who scored higher for anxiety, depression, and other psychosocial factors were more likely to flag these issues as severe.”
 

A version of this article originally appeared on WebMD.com.

People who had low hopes from a COVID-19 vaccine reported more negative side effects from the shots in a new study.

It fits the psychosomatic role of “nocebo effects,” the researchers say – when “psychological characteristics including anxiety, depression, and the tendency to amplify benign bodily sensations” cause participants to report more bad effects than others. 

In August 2021, researchers in Hamburg, Germany, followed 1,678 adults getting a second shot of Pfizer or Moderna mRNA-based vaccines. Participants reported symptoms in a diary, starting 2 weeks ahead of the vaccinations and going 7 days afterward.

Some participants said they weren’t expecting much benefit. Researchers said these people were more likely to “catastrophize instead of normalize benign bodily sensations.” People who’d had a bad experience with their first shot were more likely to say they felt aches, pains, and other side effects from the second.

The research was published in JAMA Network Open.

“Clinician-patient interactions and public vaccine campaigns may both benefit from these insights by optimizing and contextualizing information provided about COVID-19 vaccines,” the researchers said. “Unfavorable nocebo-related adverse effects could then be prevented, and overall vaccine acceptance could be improved.”

More than half of participants, 52.1%, expected bad effects to happen from the shot. Another 7.6% said they would be hospitalized from those bad effects, and 10.6% said the effects would last in the long term.

The Washington Times reported that “substantial numbers of patients reported adverse effects after vaccination,” but people with positive expectations reported them as minor. “Those who scored higher for anxiety, depression, and other psychosocial factors were more likely to flag these issues as severe.”
 

A version of this article originally appeared on WebMD.com.

An antiviral therapy in early development has the potential to prevent COVID-19 infections when given as a nasal spray as little as 4 hours before exposure. It also appears to work as a treatment if used within 4 hours after infection inside the nose, new research reveals. 

Known as TriSb92 (brand name Covidin, from drugmaker Pandemblock Oy in Finland), the viral inhibitor also appears effective against all coronavirus variants of concern, neutralizing even the Omicron variants BA.5, XBB, and BQ.1.1 in laboratory and mice studies. 

Unlike a COVID vaccine that boosts a person’s immune system as protection, the antiviral nasal spray works more directly by blocking the virus, acting as a “biological mask in the nasal cavity,” according to the biotechnology company set up to develop the treatment. 

The product targets a stable site on the spike protein of the virus that is not known to mutate. This same site is shared among many variants of the COVID virus, so it could be effective against future variants as well, researchers note.

“In animal models, by directly inactivating the virus, TriSb92 offers immediate and robust protection” against coronavirus infection and severe COVID, said Anna R. Mäkelä, PhD, lead author of the study and a senior scientist in the department of virology at the University of Helsinki. 

The study was published online in Nature Communications.
 

A potential first line of defense

Even in cases where the antiviral does not prevent coronavirus infection, the treatment could slow infection. This could happen by limiting how much virus could replicate early in the skin inside the nose and nasopharynx (the upper part of the throat), said Dr. Mäkelä, who is also CEO of Pandemblock Oy, the company set up to develop the product.

“TriSb92 could effectively tip the balance in favor of the [the person] and thereby help to reduce the risk of severe COVID-19 disease,” she said. 

The antiviral also could offer an alternative to people who cannot or do not respond to a vaccine.

“Many elderly people as well as individuals who are immunodeficient for various reasons do not respond to vaccines and are in the need of other protective measures,” said Kalle Saksela, MD, PhD, senior author of the study and a virologist at the University of Helsinki.
 

Multiple doses needed? 

TriSb92 is “one of multiple nasal spray approaches but unlikely to be as durable as effective nasal vaccines,” said Eric Topol, MD, a professor of molecular medicine and executive vice president of Scripps Research in La Jolla, Calif. Dr. Topol is also editor-in-chief of Medscape, WebMD’s sister site for medical professionals.

“The sprays generally require multiple doses per day, whereas a single dose of a nasal vaccine may protect for months,” he said.

“Both have the allure of being variant-proof,” Dr. Topol added. 
 

Thinking small

Many laboratories are shifting from treatments using monoclonal antibodies to treatments using smaller antibody fragments called “nanobodies” because they are more cost-effective and are able to last longer in storage, Dr. Mäkelä and colleagues noted. 

Several of these nanobodies have shown promise against viruses in cell culture or animal models, including as an intranasal preventive treatment for SARS-CoV-2. 

One of these smaller antibodies is being developed from llamas for example; another comes from experiments with yeast to develop synthetic nanobodies; and in a third case, researchers isolated nanobodies from llamas and from mice and showed they could neutralize the SARS-CoV-2 virus.

These nanobodies and TriSb92 target a specific part of the coronavirus spike protein called the receptor-binding domain (RBD). The RBD is where the coronavirus attaches to cells in the body. These agents essentially trick the virus by changing the structure of the outside of cells, so they look like a virus has already fused to them. This way, the virus moves on. 
 

Key findings

The researchers compared mice treated with TriSb92 before and after exposure to SARS-CoV-2. When given in advance, none of the treated mice had SARS-CoV-2 RNA in their lungs, while untreated mice in the comparison group had “abundant” levels.

Other evidence of viral infection showed similar differences between treated and untreated mice in the protective lining of cells called the epithelium inside the nose, nasal mucosa, and airways. 

Similarly, when given 2 or 4 hours after SARS-CoV-2 had already infected the epithelium, TriSb92 was linked to a complete lack of the virus’s RNA in the lungs.

It was more effective against the virus, though, when given before infection rather than after, “perhaps due to the initial establishment of the infection,” the researchers note.

The company led by Dr. Mäkelä is now working to secure funding for clinical trials of TriSb92 in humans. 

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

An antiviral therapy in early development has the potential to prevent COVID-19 infections when given as a nasal spray as little as 4 hours before exposure. It also appears to work as a treatment if used within 4 hours after infection inside the nose, new research reveals. 

Known as TriSb92 (brand name Covidin, from drugmaker Pandemblock Oy in Finland), the viral inhibitor also appears effective against all coronavirus variants of concern, neutralizing even the Omicron variants BA.5, XBB, and BQ.1.1 in laboratory and mice studies. 

Unlike a COVID vaccine that boosts a person’s immune system as protection, the antiviral nasal spray works more directly by blocking the virus, acting as a “biological mask in the nasal cavity,” according to the biotechnology company set up to develop the treatment. 

The product targets a stable site on the spike protein of the virus that is not known to mutate. This same site is shared among many variants of the COVID virus, so it could be effective against future variants as well, researchers note.

“In animal models, by directly inactivating the virus, TriSb92 offers immediate and robust protection” against coronavirus infection and severe COVID, said Anna R. Mäkelä, PhD, lead author of the study and a senior scientist in the department of virology at the University of Helsinki. 

The study was published online in Nature Communications.
 

A potential first line of defense

Even in cases where the antiviral does not prevent coronavirus infection, the treatment could slow infection. This could happen by limiting how much virus could replicate early in the skin inside the nose and nasopharynx (the upper part of the throat), said Dr. Mäkelä, who is also CEO of Pandemblock Oy, the company set up to develop the product.

“TriSb92 could effectively tip the balance in favor of the [the person] and thereby help to reduce the risk of severe COVID-19 disease,” she said. 

The antiviral also could offer an alternative to people who cannot or do not respond to a vaccine.

“Many elderly people as well as individuals who are immunodeficient for various reasons do not respond to vaccines and are in the need of other protective measures,” said Kalle Saksela, MD, PhD, senior author of the study and a virologist at the University of Helsinki.
 

Multiple doses needed? 

TriSb92 is “one of multiple nasal spray approaches but unlikely to be as durable as effective nasal vaccines,” said Eric Topol, MD, a professor of molecular medicine and executive vice president of Scripps Research in La Jolla, Calif. Dr. Topol is also editor-in-chief of Medscape, WebMD’s sister site for medical professionals.

“The sprays generally require multiple doses per day, whereas a single dose of a nasal vaccine may protect for months,” he said.

“Both have the allure of being variant-proof,” Dr. Topol added. 
 

Thinking small

Many laboratories are shifting from treatments using monoclonal antibodies to treatments using smaller antibody fragments called “nanobodies” because they are more cost-effective and are able to last longer in storage, Dr. Mäkelä and colleagues noted. 

Several of these nanobodies have shown promise against viruses in cell culture or animal models, including as an intranasal preventive treatment for SARS-CoV-2. 

One of these smaller antibodies is being developed from llamas for example; another comes from experiments with yeast to develop synthetic nanobodies; and in a third case, researchers isolated nanobodies from llamas and from mice and showed they could neutralize the SARS-CoV-2 virus.

These nanobodies and TriSb92 target a specific part of the coronavirus spike protein called the receptor-binding domain (RBD). The RBD is where the coronavirus attaches to cells in the body. These agents essentially trick the virus by changing the structure of the outside of cells, so they look like a virus has already fused to them. This way, the virus moves on. 
 

Key findings

The researchers compared mice treated with TriSb92 before and after exposure to SARS-CoV-2. When given in advance, none of the treated mice had SARS-CoV-2 RNA in their lungs, while untreated mice in the comparison group had “abundant” levels.

Other evidence of viral infection showed similar differences between treated and untreated mice in the protective lining of cells called the epithelium inside the nose, nasal mucosa, and airways. 

Similarly, when given 2 or 4 hours after SARS-CoV-2 had already infected the epithelium, TriSb92 was linked to a complete lack of the virus’s RNA in the lungs.

It was more effective against the virus, though, when given before infection rather than after, “perhaps due to the initial establishment of the infection,” the researchers note.

The company led by Dr. Mäkelä is now working to secure funding for clinical trials of TriSb92 in humans. 

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

An antiviral therapy in early development has the potential to prevent COVID-19 infections when given as a nasal spray as little as 4 hours before exposure. It also appears to work as a treatment if used within 4 hours after infection inside the nose, new research reveals. 

Known as TriSb92 (brand name Covidin, from drugmaker Pandemblock Oy in Finland), the viral inhibitor also appears effective against all coronavirus variants of concern, neutralizing even the Omicron variants BA.5, XBB, and BQ.1.1 in laboratory and mice studies. 

Unlike a COVID vaccine that boosts a person’s immune system as protection, the antiviral nasal spray works more directly by blocking the virus, acting as a “biological mask in the nasal cavity,” according to the biotechnology company set up to develop the treatment. 

The product targets a stable site on the spike protein of the virus that is not known to mutate. This same site is shared among many variants of the COVID virus, so it could be effective against future variants as well, researchers note.

“In animal models, by directly inactivating the virus, TriSb92 offers immediate and robust protection” against coronavirus infection and severe COVID, said Anna R. Mäkelä, PhD, lead author of the study and a senior scientist in the department of virology at the University of Helsinki. 

The study was published online in Nature Communications.
 

A potential first line of defense

Even in cases where the antiviral does not prevent coronavirus infection, the treatment could slow infection. This could happen by limiting how much virus could replicate early in the skin inside the nose and nasopharynx (the upper part of the throat), said Dr. Mäkelä, who is also CEO of Pandemblock Oy, the company set up to develop the product.

“TriSb92 could effectively tip the balance in favor of the [the person] and thereby help to reduce the risk of severe COVID-19 disease,” she said. 

The antiviral also could offer an alternative to people who cannot or do not respond to a vaccine.

“Many elderly people as well as individuals who are immunodeficient for various reasons do not respond to vaccines and are in the need of other protective measures,” said Kalle Saksela, MD, PhD, senior author of the study and a virologist at the University of Helsinki.
 

Multiple doses needed? 

TriSb92 is “one of multiple nasal spray approaches but unlikely to be as durable as effective nasal vaccines,” said Eric Topol, MD, a professor of molecular medicine and executive vice president of Scripps Research in La Jolla, Calif. Dr. Topol is also editor-in-chief of Medscape, WebMD’s sister site for medical professionals.

“The sprays generally require multiple doses per day, whereas a single dose of a nasal vaccine may protect for months,” he said.

“Both have the allure of being variant-proof,” Dr. Topol added. 
 

Thinking small

Many laboratories are shifting from treatments using monoclonal antibodies to treatments using smaller antibody fragments called “nanobodies” because they are more cost-effective and are able to last longer in storage, Dr. Mäkelä and colleagues noted. 

Several of these nanobodies have shown promise against viruses in cell culture or animal models, including as an intranasal preventive treatment for SARS-CoV-2. 

One of these smaller antibodies is being developed from llamas for example; another comes from experiments with yeast to develop synthetic nanobodies; and in a third case, researchers isolated nanobodies from llamas and from mice and showed they could neutralize the SARS-CoV-2 virus.

These nanobodies and TriSb92 target a specific part of the coronavirus spike protein called the receptor-binding domain (RBD). The RBD is where the coronavirus attaches to cells in the body. These agents essentially trick the virus by changing the structure of the outside of cells, so they look like a virus has already fused to them. This way, the virus moves on. 
 

Key findings

The researchers compared mice treated with TriSb92 before and after exposure to SARS-CoV-2. When given in advance, none of the treated mice had SARS-CoV-2 RNA in their lungs, while untreated mice in the comparison group had “abundant” levels.

Other evidence of viral infection showed similar differences between treated and untreated mice in the protective lining of cells called the epithelium inside the nose, nasal mucosa, and airways. 

Similarly, when given 2 or 4 hours after SARS-CoV-2 had already infected the epithelium, TriSb92 was linked to a complete lack of the virus’s RNA in the lungs.

It was more effective against the virus, though, when given before infection rather than after, “perhaps due to the initial establishment of the infection,” the researchers note.

The company led by Dr. Mäkelä is now working to secure funding for clinical trials of TriSb92 in humans. 

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