Pulmonary Infections

Pseudomonas aeruginosa persisted in the airways of patients with chronic obstructive pulmonary disease (COPD), based on data from 23 patients over a 1-year period.

P. aeruginosa is cultured in as many as 20% of bacterial exacerbations and has been linked to increased morbidity and mortality in patients with COPD, wrote Josefin Eklöf, MD, of the University of Copenhagen and colleagues. However, its patterns and characteristics have not been well studied, and researchers proposed that P. aerunginosa persists in COPD patients in part because of genetic adaptations in the genes related to antibiotic resistance.

In a study published in Clinical Microbiology and Infection, the researchers identified 23 consecutive patients enrolled in an ongoing randomized clinical trial at four sites in Denmark between Jan. 2018 and Jan. 2020. Participants were randomized 1:1 to targeted antipseudomonal antibiotic treatment for 14 days (between visit day 1 and visit day 14) or no antipseudomonal treatment. Sputum samples were collected at baseline on day 1 and on days 14, 30, 60, 90, and 365.

The researchers sequenced isolates from 23 adult patients over 365 days of follow-up. The recurrence of P. aeruginosa occurred in 19 patients (83%) during this period. Ultimately, a total of 153 isolates were analyzed. The researchers found that each patient carried their own unique lineage, with the except of one patient in whom two distinct lineages were identified.

“Independent mutation of the same gene across multiple lineages may be the result of positive selection of adaptive mutations,” Dr. Eklöf and colleagues wrote. They found 38 genes for P. aeruginosa that were mutated in at least two lineages, which suggested adaptive mutations. Some of the more frequently mutated genes were those important to antibiotic resistance and chronic infections, the researchers said. Specifically, mutations occurred in 40 of 140 pathoadaptive genes, compared with 265 of 5,572 other genes (P < .001). In addition, the 24 total lineages carried 4-6 antibiotic resistance genes, and no evidence suggested that lineages acquired or lost these genes during carriage.

Overall, the results indicate that the recurrence of P. aeruginosa was caused by persistence of the same clonal lineage in each patient. “This pattern of persistence was associated with genetic adaptation related to phenotypes considered important for P. aeruginosa infections,” the researchers said.

The study findings were limited by the relatively small number of samples and isolates per sample, the follow-up of only 1 year, and the inability to account for mutations in the early stage because few patients were naive to P. aeruginosa at the start of the study, the researchers noted. However, the results were strengthened by the relatively large and well-defined study population and high rate of sampling compliance, they said.

Overall, “the findings warrant research to improve therapy, including trial data on possible clinical benefits of attempting antibiotic eradication of P. aeruginosa in this vulnerable group of patients,” they concluded.

The study was supported by the Independent Research Fund Denmark and the Research committee at Copenhagen University Hospital-Herlev and Gentofte Hospital. The researchers had no financial conflicts to disclose.

Pseudomonas aeruginosa persisted in the airways of patients with chronic obstructive pulmonary disease (COPD), based on data from 23 patients over a 1-year period.

P. aeruginosa is cultured in as many as 20% of bacterial exacerbations and has been linked to increased morbidity and mortality in patients with COPD, wrote Josefin Eklöf, MD, of the University of Copenhagen and colleagues. However, its patterns and characteristics have not been well studied, and researchers proposed that P. aerunginosa persists in COPD patients in part because of genetic adaptations in the genes related to antibiotic resistance.

In a study published in Clinical Microbiology and Infection, the researchers identified 23 consecutive patients enrolled in an ongoing randomized clinical trial at four sites in Denmark between Jan. 2018 and Jan. 2020. Participants were randomized 1:1 to targeted antipseudomonal antibiotic treatment for 14 days (between visit day 1 and visit day 14) or no antipseudomonal treatment. Sputum samples were collected at baseline on day 1 and on days 14, 30, 60, 90, and 365.

The researchers sequenced isolates from 23 adult patients over 365 days of follow-up. The recurrence of P. aeruginosa occurred in 19 patients (83%) during this period. Ultimately, a total of 153 isolates were analyzed. The researchers found that each patient carried their own unique lineage, with the except of one patient in whom two distinct lineages were identified.

“Independent mutation of the same gene across multiple lineages may be the result of positive selection of adaptive mutations,” Dr. Eklöf and colleagues wrote. They found 38 genes for P. aeruginosa that were mutated in at least two lineages, which suggested adaptive mutations. Some of the more frequently mutated genes were those important to antibiotic resistance and chronic infections, the researchers said. Specifically, mutations occurred in 40 of 140 pathoadaptive genes, compared with 265 of 5,572 other genes (P < .001). In addition, the 24 total lineages carried 4-6 antibiotic resistance genes, and no evidence suggested that lineages acquired or lost these genes during carriage.

Overall, the results indicate that the recurrence of P. aeruginosa was caused by persistence of the same clonal lineage in each patient. “This pattern of persistence was associated with genetic adaptation related to phenotypes considered important for P. aeruginosa infections,” the researchers said.

The study findings were limited by the relatively small number of samples and isolates per sample, the follow-up of only 1 year, and the inability to account for mutations in the early stage because few patients were naive to P. aeruginosa at the start of the study, the researchers noted. However, the results were strengthened by the relatively large and well-defined study population and high rate of sampling compliance, they said.

Overall, “the findings warrant research to improve therapy, including trial data on possible clinical benefits of attempting antibiotic eradication of P. aeruginosa in this vulnerable group of patients,” they concluded.

The study was supported by the Independent Research Fund Denmark and the Research committee at Copenhagen University Hospital-Herlev and Gentofte Hospital. The researchers had no financial conflicts to disclose.

Pseudomonas aeruginosa persisted in the airways of patients with chronic obstructive pulmonary disease (COPD), based on data from 23 patients over a 1-year period.

P. aeruginosa is cultured in as many as 20% of bacterial exacerbations and has been linked to increased morbidity and mortality in patients with COPD, wrote Josefin Eklöf, MD, of the University of Copenhagen and colleagues. However, its patterns and characteristics have not been well studied, and researchers proposed that P. aerunginosa persists in COPD patients in part because of genetic adaptations in the genes related to antibiotic resistance.

In a study published in Clinical Microbiology and Infection, the researchers identified 23 consecutive patients enrolled in an ongoing randomized clinical trial at four sites in Denmark between Jan. 2018 and Jan. 2020. Participants were randomized 1:1 to targeted antipseudomonal antibiotic treatment for 14 days (between visit day 1 and visit day 14) or no antipseudomonal treatment. Sputum samples were collected at baseline on day 1 and on days 14, 30, 60, 90, and 365.

The researchers sequenced isolates from 23 adult patients over 365 days of follow-up. The recurrence of P. aeruginosa occurred in 19 patients (83%) during this period. Ultimately, a total of 153 isolates were analyzed. The researchers found that each patient carried their own unique lineage, with the except of one patient in whom two distinct lineages were identified.

“Independent mutation of the same gene across multiple lineages may be the result of positive selection of adaptive mutations,” Dr. Eklöf and colleagues wrote. They found 38 genes for P. aeruginosa that were mutated in at least two lineages, which suggested adaptive mutations. Some of the more frequently mutated genes were those important to antibiotic resistance and chronic infections, the researchers said. Specifically, mutations occurred in 40 of 140 pathoadaptive genes, compared with 265 of 5,572 other genes (P < .001). In addition, the 24 total lineages carried 4-6 antibiotic resistance genes, and no evidence suggested that lineages acquired or lost these genes during carriage.

Overall, the results indicate that the recurrence of P. aeruginosa was caused by persistence of the same clonal lineage in each patient. “This pattern of persistence was associated with genetic adaptation related to phenotypes considered important for P. aeruginosa infections,” the researchers said.

The study findings were limited by the relatively small number of samples and isolates per sample, the follow-up of only 1 year, and the inability to account for mutations in the early stage because few patients were naive to P. aeruginosa at the start of the study, the researchers noted. However, the results were strengthened by the relatively large and well-defined study population and high rate of sampling compliance, they said.

Overall, “the findings warrant research to improve therapy, including trial data on possible clinical benefits of attempting antibiotic eradication of P. aeruginosa in this vulnerable group of patients,” they concluded.

The study was supported by the Independent Research Fund Denmark and the Research committee at Copenhagen University Hospital-Herlev and Gentofte Hospital. The researchers had no financial conflicts to disclose.

Azithromycin administered for severe early-life respiratory syncytial virus (RSV) bronchiolitis did not prevent recurrent wheezing in affected children over the next 2-4 years, a randomized, single-center study found.

Antibiotics are frequently given to patients with RSV bronchiolitis, although this practice is not supported by American Academy of Pediatrics clinical guidelines. Many doctors will prescribe them anyway if they see redness in the ears or other signs of infection, lead author Avraham Beigelman, MD, a pediatric allergist and immunologist at Washington University in St. Louis, said in an interview.

The double-blind, placebo-controlled trial, presented at the 2022 meeting of the American Academy of Allergy, Asthma & Immunology in Phoenix, was simultaneously published online Feb. 27, 2022, in the New England Journal of Medicine–Evidence.

Since azithromycin has shown anti-inflammatory benefit in chronic lung diseases and is a mainstay of care in cystic fibrosis and had shown previous effects in RSV patients, this trial examined its potential for preventing future recurrent wheezing in infants hospitalized with RSV who are at risk for developing asthma later. About half of children admitted to the hospital for RSV will develop asthma by age 7, Dr. Beigelman said.

“We were very surprised that azithromycin didn’t help in this trial given our previous findings,” Dr. Beigelman said.

And while those given azithromycin versus those given a placebo showed no significant decrease in recurrent wheezing, there was a slight suggestion that treatment with antibiotics of any kind may increase the risk of later wheezing in infants hospitalized with the virus.

“The study was not designed to tease at the effects of different antibiotics or combinations of antibiotics, so we have to be very cautious about this trend,” Dr. Beigelman said. “There may be short-term effects and long-term effects. Certain antibiotics may affect the infant microbiome in other parts of the body, such as the gut, [in] a way that may predispose to asthma. But all these associations suggest that early-life antibiotics for viral infections are not good for you.”

He pointed to the longstanding question among clinicians whether it is the antibiotic that’s increasing the risk of the harm or the condition for which the antibiotic is prescribed. These exploratory data, however, suggest that antibiotics for RSV may be causing harm.

In pursuit of that hypothesis, his group has collected airway microbiome samples from these infants and plan to investigate whether bacteria colonizing the airway may interact with the antibiotics to increase wheezing. The researchers will analyze stool samples from the babies to see whether the gut microbiome may also play a role in wheezing and the subsequent risk of developing childhood asthma.
 

Study details

The trial prospectively enrolled 200 otherwise healthy babies aged 1-18 months who were hospitalized at St. Louis Children’s Hospital for acute RSV bronchiolitis. Although RSV is a very common pediatric virus, only bout 3% of babies will require hospitalization in order to receive oxygen, Dr. Beigelman said.

Babies were randomly assigned to receive placebo or oral azithromycin at 10 mg/kg daily for 7 days, followed by 5 mg/kg daily for 7 days. Randomization was stratified by recent open-label antibiotic use. The primary outcome was recurrent wheeze, defined as a third episode of post-RSV wheeze over the following 2-4 years.

The biologic activity of azithromycin was clear since nasal-wash interleukin at day 14 after randomization was lower in azithromycin-treated infants. But despite evidence of activity, the risk of post-RSV recurrent wheeze was similar in both arms: 47% in the azithromycin group versus 36% in the placebo group, for an adjusted hazard ratio of 1.45 (95% confidence interval, 0.92-2.29; P = .11).

Nor did azithromycin lower the risk of recurrent wheeze in babies already receiving other antibiotics at the time of enrollment (HR, 0.94; 95% CI, 0.43-2.07). As for antibiotic-naive participants receiving azithromycin, there was a slight signal of potential increased risk of developing recurrent wheezing (HR, 1.79; 95% CI, 1.03-3.1).

The bottom line? The findings support current clinical guidelines recommending against the use of antibiotics for RSV. “At the very least, azithromycin and antibiotics in general have no benefit in preventing recurrent wheeze, and there is a possibility they may be harmful,” Dr. Beigelman said.

This trial is funded by the National Heart, Lung, and Blood Institute. Dr. Beigelman reported relationships with AstraZeneca, Novartis, and Sanofi. Two study coauthors disclosed various ties to industry.

Azithromycin administered for severe early-life respiratory syncytial virus (RSV) bronchiolitis did not prevent recurrent wheezing in affected children over the next 2-4 years, a randomized, single-center study found.

Antibiotics are frequently given to patients with RSV bronchiolitis, although this practice is not supported by American Academy of Pediatrics clinical guidelines. Many doctors will prescribe them anyway if they see redness in the ears or other signs of infection, lead author Avraham Beigelman, MD, a pediatric allergist and immunologist at Washington University in St. Louis, said in an interview.

The double-blind, placebo-controlled trial, presented at the 2022 meeting of the American Academy of Allergy, Asthma & Immunology in Phoenix, was simultaneously published online Feb. 27, 2022, in the New England Journal of Medicine–Evidence.

Since azithromycin has shown anti-inflammatory benefit in chronic lung diseases and is a mainstay of care in cystic fibrosis and had shown previous effects in RSV patients, this trial examined its potential for preventing future recurrent wheezing in infants hospitalized with RSV who are at risk for developing asthma later. About half of children admitted to the hospital for RSV will develop asthma by age 7, Dr. Beigelman said.

“We were very surprised that azithromycin didn’t help in this trial given our previous findings,” Dr. Beigelman said.

And while those given azithromycin versus those given a placebo showed no significant decrease in recurrent wheezing, there was a slight suggestion that treatment with antibiotics of any kind may increase the risk of later wheezing in infants hospitalized with the virus.

“The study was not designed to tease at the effects of different antibiotics or combinations of antibiotics, so we have to be very cautious about this trend,” Dr. Beigelman said. “There may be short-term effects and long-term effects. Certain antibiotics may affect the infant microbiome in other parts of the body, such as the gut, [in] a way that may predispose to asthma. But all these associations suggest that early-life antibiotics for viral infections are not good for you.”

He pointed to the longstanding question among clinicians whether it is the antibiotic that’s increasing the risk of the harm or the condition for which the antibiotic is prescribed. These exploratory data, however, suggest that antibiotics for RSV may be causing harm.

In pursuit of that hypothesis, his group has collected airway microbiome samples from these infants and plan to investigate whether bacteria colonizing the airway may interact with the antibiotics to increase wheezing. The researchers will analyze stool samples from the babies to see whether the gut microbiome may also play a role in wheezing and the subsequent risk of developing childhood asthma.
 

Study details

The trial prospectively enrolled 200 otherwise healthy babies aged 1-18 months who were hospitalized at St. Louis Children’s Hospital for acute RSV bronchiolitis. Although RSV is a very common pediatric virus, only bout 3% of babies will require hospitalization in order to receive oxygen, Dr. Beigelman said.

Babies were randomly assigned to receive placebo or oral azithromycin at 10 mg/kg daily for 7 days, followed by 5 mg/kg daily for 7 days. Randomization was stratified by recent open-label antibiotic use. The primary outcome was recurrent wheeze, defined as a third episode of post-RSV wheeze over the following 2-4 years.

The biologic activity of azithromycin was clear since nasal-wash interleukin at day 14 after randomization was lower in azithromycin-treated infants. But despite evidence of activity, the risk of post-RSV recurrent wheeze was similar in both arms: 47% in the azithromycin group versus 36% in the placebo group, for an adjusted hazard ratio of 1.45 (95% confidence interval, 0.92-2.29; P = .11).

Nor did azithromycin lower the risk of recurrent wheeze in babies already receiving other antibiotics at the time of enrollment (HR, 0.94; 95% CI, 0.43-2.07). As for antibiotic-naive participants receiving azithromycin, there was a slight signal of potential increased risk of developing recurrent wheezing (HR, 1.79; 95% CI, 1.03-3.1).

The bottom line? The findings support current clinical guidelines recommending against the use of antibiotics for RSV. “At the very least, azithromycin and antibiotics in general have no benefit in preventing recurrent wheeze, and there is a possibility they may be harmful,” Dr. Beigelman said.

This trial is funded by the National Heart, Lung, and Blood Institute. Dr. Beigelman reported relationships with AstraZeneca, Novartis, and Sanofi. Two study coauthors disclosed various ties to industry.

Azithromycin administered for severe early-life respiratory syncytial virus (RSV) bronchiolitis did not prevent recurrent wheezing in affected children over the next 2-4 years, a randomized, single-center study found.

Antibiotics are frequently given to patients with RSV bronchiolitis, although this practice is not supported by American Academy of Pediatrics clinical guidelines. Many doctors will prescribe them anyway if they see redness in the ears or other signs of infection, lead author Avraham Beigelman, MD, a pediatric allergist and immunologist at Washington University in St. Louis, said in an interview.

The double-blind, placebo-controlled trial, presented at the 2022 meeting of the American Academy of Allergy, Asthma & Immunology in Phoenix, was simultaneously published online Feb. 27, 2022, in the New England Journal of Medicine–Evidence.

Since azithromycin has shown anti-inflammatory benefit in chronic lung diseases and is a mainstay of care in cystic fibrosis and had shown previous effects in RSV patients, this trial examined its potential for preventing future recurrent wheezing in infants hospitalized with RSV who are at risk for developing asthma later. About half of children admitted to the hospital for RSV will develop asthma by age 7, Dr. Beigelman said.

“We were very surprised that azithromycin didn’t help in this trial given our previous findings,” Dr. Beigelman said.

And while those given azithromycin versus those given a placebo showed no significant decrease in recurrent wheezing, there was a slight suggestion that treatment with antibiotics of any kind may increase the risk of later wheezing in infants hospitalized with the virus.

“The study was not designed to tease at the effects of different antibiotics or combinations of antibiotics, so we have to be very cautious about this trend,” Dr. Beigelman said. “There may be short-term effects and long-term effects. Certain antibiotics may affect the infant microbiome in other parts of the body, such as the gut, [in] a way that may predispose to asthma. But all these associations suggest that early-life antibiotics for viral infections are not good for you.”

He pointed to the longstanding question among clinicians whether it is the antibiotic that’s increasing the risk of the harm or the condition for which the antibiotic is prescribed. These exploratory data, however, suggest that antibiotics for RSV may be causing harm.

In pursuit of that hypothesis, his group has collected airway microbiome samples from these infants and plan to investigate whether bacteria colonizing the airway may interact with the antibiotics to increase wheezing. The researchers will analyze stool samples from the babies to see whether the gut microbiome may also play a role in wheezing and the subsequent risk of developing childhood asthma.
 

Study details

The trial prospectively enrolled 200 otherwise healthy babies aged 1-18 months who were hospitalized at St. Louis Children’s Hospital for acute RSV bronchiolitis. Although RSV is a very common pediatric virus, only bout 3% of babies will require hospitalization in order to receive oxygen, Dr. Beigelman said.

Babies were randomly assigned to receive placebo or oral azithromycin at 10 mg/kg daily for 7 days, followed by 5 mg/kg daily for 7 days. Randomization was stratified by recent open-label antibiotic use. The primary outcome was recurrent wheeze, defined as a third episode of post-RSV wheeze over the following 2-4 years.

The biologic activity of azithromycin was clear since nasal-wash interleukin at day 14 after randomization was lower in azithromycin-treated infants. But despite evidence of activity, the risk of post-RSV recurrent wheeze was similar in both arms: 47% in the azithromycin group versus 36% in the placebo group, for an adjusted hazard ratio of 1.45 (95% confidence interval, 0.92-2.29; P = .11).

Nor did azithromycin lower the risk of recurrent wheeze in babies already receiving other antibiotics at the time of enrollment (HR, 0.94; 95% CI, 0.43-2.07). As for antibiotic-naive participants receiving azithromycin, there was a slight signal of potential increased risk of developing recurrent wheezing (HR, 1.79; 95% CI, 1.03-3.1).

The bottom line? The findings support current clinical guidelines recommending against the use of antibiotics for RSV. “At the very least, azithromycin and antibiotics in general have no benefit in preventing recurrent wheeze, and there is a possibility they may be harmful,” Dr. Beigelman said.

This trial is funded by the National Heart, Lung, and Blood Institute. Dr. Beigelman reported relationships with AstraZeneca, Novartis, and Sanofi. Two study coauthors disclosed various ties to industry.

A study of the nasal microbiome helped researchers predict recurrent polyps in chronic rhinosinusitis patients with more than 90% accuracy, based on data from 85 individuals.

Chronic rhinosinusitis with nasal polyps (CRSwNP) has a significant impact on patient quality of life, but the underlying mechanism of the disease has not been well studied, and treatment options remain limited, wrote Yan Zhao, MD, of Capital Medical University, Beijing, and study coauthors.

Previous research has shown that nasal microbiome composition differs in patients with and without asthma, and some studies suggest that changes in microbiota could contribute to CRSwNP, the authors wrote. The researchers wondered if features of the nasal microbiome can predict the recurrence of nasal polyps after endoscopic sinus surgery and serve as a potential treatment target.

In a study in Allergy, the researchers examined nasal swab samples from 85 adults with CRSwNP who underwent endoscopic sinus surgery between August 2014 and March 2016 at a single center in China. The researchers performed bacterial analysis and gene sequencing on all samples.

The patients ranged in age from 18-73 years, with a mean age of 46 years, and included 64 men and 21 women. The primary outcome was recurrence of polyps. Of the total, 39 individuals had recurrence, and 46 did not.

When the researchers compared microbiota from swab samples of recurrent and nonrecurrent patients, they found differences in composition based on bacterial genus abundance. “Campylobacter, Bdellovibrio, and Aggregatibacter, among others, were more abundant in swabs from CRSwNP recurrence samples, whereas Actinobacillus, Gemella, and Moraxella were more abundant in non-recurrence samples,” they wrote.

The researchers then tested their theory that distinct nasal microbiota could be a predictive marker of risk for future nasal polyp recurrence. They used a training set of 48 samples and constructed models from nasal microbiota alone, clinical features alone, and both together.

The regression model identified Porphyromonas, Bacteroides, Moryella, Aggregatibacter, Butyrivibrio, Shewanella, Pseudoxanthomonas, Friedmanniella, Limnobacter, and Curvibacter as the most important taxa that distinguished recurrence from nonrecurrence in the specimens. When the model was validated, the area under the curve was 0.914, yielding a predictor of nasal polyp recurrence with 91.4% accuracy.

“It is highly likely that proteins, nucleic acids, and other small molecules produced by nasal microbiota are associated with the progression of CRSwNP,” the researchers noted in their discussion of the findings. “Further, the nasal microbiota could maintain a stable community environment through the secretion of various chemical compounds and/or inflammatory factors, thus playing a central role in the development of CRSwNP.”

The study findings were limited by several factors, including the analysis of nasal flora only at the genus level in the screening phase, the use only of bioinformatic analysis for recurrence prediction, and the inclusion only of subjects from a single center, the researchers noted. Future studies should combine predictors to increase accuracy and include deeper sequencing, they said. However, the results support data from previous studies and suggest a strategy to meet the need for predictors of recurrence in CRSwNP, they concluded.

“There is a critical need to understand the role of the upper airway microbiome in different phenotypes of CRS,” said Emily K. Cope, PhD, assistant director at the Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, in an interview. “This was one of the first studies to evaluate the predictive power of the microbiome in recurrence of a common CRS phenotype – CRS with nasal polyps,” she said. “Importantly, the researchers were able to predict recurrence of polyps prior to the disease manifestation,” she noted.  

“Given the nascent state of current upper airway microbiome research, I was surprised that they were able to predict polyp recurrence prior to disease manifestation,” Dr. Cope said. “This is exciting, and I can imagine a future where we use microbiome data to understand risk for disease.”

What is the take-home message for clinicians? Although the immediate clinical implications are limited, Dr. Cope expressed enthusiasm for additional research. “At this point, there’s not a lot we can do without validation studies, but this study is promising. I hope we can understand the mechanism that an altered microbiome might drive (or be a result of) polyposis,” she said.

The study was supported by the National Natural Science Foundation of China, the program for the Changjiang scholars and innovative research team, the Beijing Bai-Qian-Wan talent project, the Public Welfare Development and Reform Pilot Project, the National Science and Technology Major Project, and the CAMS Innovation Fund for Medical Sciences. The researchers and Dr. Cope disclosed no financial conflicts.

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

A study of the nasal microbiome helped researchers predict recurrent polyps in chronic rhinosinusitis patients with more than 90% accuracy, based on data from 85 individuals.

Chronic rhinosinusitis with nasal polyps (CRSwNP) has a significant impact on patient quality of life, but the underlying mechanism of the disease has not been well studied, and treatment options remain limited, wrote Yan Zhao, MD, of Capital Medical University, Beijing, and study coauthors.

Previous research has shown that nasal microbiome composition differs in patients with and without asthma, and some studies suggest that changes in microbiota could contribute to CRSwNP, the authors wrote. The researchers wondered if features of the nasal microbiome can predict the recurrence of nasal polyps after endoscopic sinus surgery and serve as a potential treatment target.

In a study in Allergy, the researchers examined nasal swab samples from 85 adults with CRSwNP who underwent endoscopic sinus surgery between August 2014 and March 2016 at a single center in China. The researchers performed bacterial analysis and gene sequencing on all samples.

The patients ranged in age from 18-73 years, with a mean age of 46 years, and included 64 men and 21 women. The primary outcome was recurrence of polyps. Of the total, 39 individuals had recurrence, and 46 did not.

When the researchers compared microbiota from swab samples of recurrent and nonrecurrent patients, they found differences in composition based on bacterial genus abundance. “Campylobacter, Bdellovibrio, and Aggregatibacter, among others, were more abundant in swabs from CRSwNP recurrence samples, whereas Actinobacillus, Gemella, and Moraxella were more abundant in non-recurrence samples,” they wrote.

The researchers then tested their theory that distinct nasal microbiota could be a predictive marker of risk for future nasal polyp recurrence. They used a training set of 48 samples and constructed models from nasal microbiota alone, clinical features alone, and both together.

The regression model identified Porphyromonas, Bacteroides, Moryella, Aggregatibacter, Butyrivibrio, Shewanella, Pseudoxanthomonas, Friedmanniella, Limnobacter, and Curvibacter as the most important taxa that distinguished recurrence from nonrecurrence in the specimens. When the model was validated, the area under the curve was 0.914, yielding a predictor of nasal polyp recurrence with 91.4% accuracy.

“It is highly likely that proteins, nucleic acids, and other small molecules produced by nasal microbiota are associated with the progression of CRSwNP,” the researchers noted in their discussion of the findings. “Further, the nasal microbiota could maintain a stable community environment through the secretion of various chemical compounds and/or inflammatory factors, thus playing a central role in the development of CRSwNP.”

The study findings were limited by several factors, including the analysis of nasal flora only at the genus level in the screening phase, the use only of bioinformatic analysis for recurrence prediction, and the inclusion only of subjects from a single center, the researchers noted. Future studies should combine predictors to increase accuracy and include deeper sequencing, they said. However, the results support data from previous studies and suggest a strategy to meet the need for predictors of recurrence in CRSwNP, they concluded.

“There is a critical need to understand the role of the upper airway microbiome in different phenotypes of CRS,” said Emily K. Cope, PhD, assistant director at the Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, in an interview. “This was one of the first studies to evaluate the predictive power of the microbiome in recurrence of a common CRS phenotype – CRS with nasal polyps,” she said. “Importantly, the researchers were able to predict recurrence of polyps prior to the disease manifestation,” she noted.  

“Given the nascent state of current upper airway microbiome research, I was surprised that they were able to predict polyp recurrence prior to disease manifestation,” Dr. Cope said. “This is exciting, and I can imagine a future where we use microbiome data to understand risk for disease.”

What is the take-home message for clinicians? Although the immediate clinical implications are limited, Dr. Cope expressed enthusiasm for additional research. “At this point, there’s not a lot we can do without validation studies, but this study is promising. I hope we can understand the mechanism that an altered microbiome might drive (or be a result of) polyposis,” she said.

The study was supported by the National Natural Science Foundation of China, the program for the Changjiang scholars and innovative research team, the Beijing Bai-Qian-Wan talent project, the Public Welfare Development and Reform Pilot Project, the National Science and Technology Major Project, and the CAMS Innovation Fund for Medical Sciences. The researchers and Dr. Cope disclosed no financial conflicts.

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

A study of the nasal microbiome helped researchers predict recurrent polyps in chronic rhinosinusitis patients with more than 90% accuracy, based on data from 85 individuals.

Chronic rhinosinusitis with nasal polyps (CRSwNP) has a significant impact on patient quality of life, but the underlying mechanism of the disease has not been well studied, and treatment options remain limited, wrote Yan Zhao, MD, of Capital Medical University, Beijing, and study coauthors.

Previous research has shown that nasal microbiome composition differs in patients with and without asthma, and some studies suggest that changes in microbiota could contribute to CRSwNP, the authors wrote. The researchers wondered if features of the nasal microbiome can predict the recurrence of nasal polyps after endoscopic sinus surgery and serve as a potential treatment target.

In a study in Allergy, the researchers examined nasal swab samples from 85 adults with CRSwNP who underwent endoscopic sinus surgery between August 2014 and March 2016 at a single center in China. The researchers performed bacterial analysis and gene sequencing on all samples.

The patients ranged in age from 18-73 years, with a mean age of 46 years, and included 64 men and 21 women. The primary outcome was recurrence of polyps. Of the total, 39 individuals had recurrence, and 46 did not.

When the researchers compared microbiota from swab samples of recurrent and nonrecurrent patients, they found differences in composition based on bacterial genus abundance. “Campylobacter, Bdellovibrio, and Aggregatibacter, among others, were more abundant in swabs from CRSwNP recurrence samples, whereas Actinobacillus, Gemella, and Moraxella were more abundant in non-recurrence samples,” they wrote.

The researchers then tested their theory that distinct nasal microbiota could be a predictive marker of risk for future nasal polyp recurrence. They used a training set of 48 samples and constructed models from nasal microbiota alone, clinical features alone, and both together.

The regression model identified Porphyromonas, Bacteroides, Moryella, Aggregatibacter, Butyrivibrio, Shewanella, Pseudoxanthomonas, Friedmanniella, Limnobacter, and Curvibacter as the most important taxa that distinguished recurrence from nonrecurrence in the specimens. When the model was validated, the area under the curve was 0.914, yielding a predictor of nasal polyp recurrence with 91.4% accuracy.

“It is highly likely that proteins, nucleic acids, and other small molecules produced by nasal microbiota are associated with the progression of CRSwNP,” the researchers noted in their discussion of the findings. “Further, the nasal microbiota could maintain a stable community environment through the secretion of various chemical compounds and/or inflammatory factors, thus playing a central role in the development of CRSwNP.”

The study findings were limited by several factors, including the analysis of nasal flora only at the genus level in the screening phase, the use only of bioinformatic analysis for recurrence prediction, and the inclusion only of subjects from a single center, the researchers noted. Future studies should combine predictors to increase accuracy and include deeper sequencing, they said. However, the results support data from previous studies and suggest a strategy to meet the need for predictors of recurrence in CRSwNP, they concluded.

“There is a critical need to understand the role of the upper airway microbiome in different phenotypes of CRS,” said Emily K. Cope, PhD, assistant director at the Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, in an interview. “This was one of the first studies to evaluate the predictive power of the microbiome in recurrence of a common CRS phenotype – CRS with nasal polyps,” she said. “Importantly, the researchers were able to predict recurrence of polyps prior to the disease manifestation,” she noted.  

“Given the nascent state of current upper airway microbiome research, I was surprised that they were able to predict polyp recurrence prior to disease manifestation,” Dr. Cope said. “This is exciting, and I can imagine a future where we use microbiome data to understand risk for disease.”

What is the take-home message for clinicians? Although the immediate clinical implications are limited, Dr. Cope expressed enthusiasm for additional research. “At this point, there’s not a lot we can do without validation studies, but this study is promising. I hope we can understand the mechanism that an altered microbiome might drive (or be a result of) polyposis,” she said.

The study was supported by the National Natural Science Foundation of China, the program for the Changjiang scholars and innovative research team, the Beijing Bai-Qian-Wan talent project, the Public Welfare Development and Reform Pilot Project, the National Science and Technology Major Project, and the CAMS Innovation Fund for Medical Sciences. The researchers and Dr. Cope disclosed no financial conflicts.

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

Early initiation of the antiviral oseltamivir (Tamiflu) reduces the risk for death in patients hospitalized with community-acquired pneumonia (CAP) but patients have to be tested for influenza first and that is not happening often enough, a large observational cohort of adult patients indicates.

“Early testing allows for early treatment, and we found that early treatment was associated with reduced mortality so testing patients during the flu season is crucial,” senior author Michael Rothberg, MD, MPH, of the Cleveland Clinic said in an interview.

“Even during the flu season, most patients with CAP in our study went untested for influenza [even though] those who received early oseltamivir exhibited lower 14-day in-hospital case fatality ... suggesting more widespread testing might improve patient outcomes,” the authors added.

The study was published online Feb. 5, 2022, in the journal CHEST.
 

Premier database

Data from the Premier Database – a hospital discharge database with information from over 600 hospitals in the United States – were analyzed between July 2010 and June 2015. Microbiological laboratory data was provided by 179 hospitals. “For each year, we evaluated the total percentage of patients tested for influenza A/B within 3 days of hospitalization,” lead author Abhishek Deshpande, MD, PhD, Cleveland Clinic, and colleagues explained.

A total of 166,268 patients with CAP were included in the study, among which only about one-quarter were tested for influenza. Some 11.5% tested positive for the flu, the authors noted. Testing did increase from 15.4% in 2010 to 35.6% in 2015 and it was higher at close to 29% during the influenza season, compared with only about 8% during the summer months.

Patients who were tested for influenza were younger at age 66.6 years, compared with untested patients, who were 70 years of age (P < .001). Tested patients were also less likely to have been admitted from a nursing facility (P < .001), were less likely to have been hospitalized in the preceding 6 months (P < .001) and have fewer comorbidities than those who were not tested (P < .001).

“Both groups had similar illness severities on admission,” the authors observed, “but patients who were tested were less likely to die in the hospital within 14 days,” the authors reported – at 6.7% versus 10.9% for untested patients (P < .001).

More than 80% of patients who tested positive for influenza received an antibacterial on day 1 of their admission, compared with virtually all those who were either not tested or who tested negative, the investigators added (P < .001). The mean duration of antibacterial therapy among patients with a bacterial coinfection was not influenced by influenza test results.

However, among those who tested positive for influenza, almost 60% received oseltamivir on day 1 whereas roughly 30% received treatment on day 2 or later. In fact, almost all patients who received early oseltamivir were tested for influenza on day 1, the investigators pointed out. Patients who received early oseltamivir had a 25% lower risk of death within the first 14 days in hospital at an adjusted odds ratio of 0.75 (95% confidence interval, 0.59-0.96).

Early initiation of the antiviral also reduced the risk of requiring subsequent ICU care by 36% at an aOR of 0.64; invasive mechanical ventilation by 46% at an aOR of 0.54, and the need for vasopressor therapy by 47% at an aOR of 0.53. All results were within the 95% confidence levels.

Early use of antiviral therapy also reduced both the length of hospital stay and the cost of that stay by 12%.
 

ATS-IDSA guidelines

As Dr. Deshpande noted, the American Thoracic Society and the Infectious Diseases Society of America guidelines recommend testing and empiric treatment of influenza in patients hospitalized with CAP. “Testing more inpatients especially during the flu season can reduce other diagnostic testing and improve antimicrobial stewardship,” Deshpande noted.

Thus, while the rate of testing for influenza did increase over the 5-year study interval, “there is substantial room for improvement,” he added, as a positive test clearly does trigger the need for intervention. As Dr. Deshpande also noted, the past two influenza seasons have been mild, but influenza activity has again picked up lately again in many parts of the United States.

With the COVID-19 pandemic overwhelming influenza over the past few years, “differentiating between the two based on symptoms alone can be challenging,” he acknowledged, “and clinicians will need to test and treat accordingly.” This is particularly important given that this study clearly indicates that early treatment with an antiviral can lower the risk of short-term mortality in hospitalized CAP patients.

One limitation of the study was the lack of data on time of symptom onset, which may be an important confounder of the effect of oseltamivir on outcomes, the authors point out. Asked to comment on the findings, Barbara Jones, MD, University of Utah Health, Salt Lake City, noted that timely antivirals for patients with influenza are highly effective at mitigating severe disease and are thus strongly recommended by practice guidelines.

“However, it is hard for clinicians to keep influenza on the radar and change testing and treatment approaches according to the season and prevalence [of influenza infections],” she said in an interview. “This is an important study that highlights this challenge.

“We need a better understanding of the solutions that have been effective at improving influenza recognition and treatment, possibly by studying facilities that perform well at this process,” she said.

Dr. Deshpande reported receiving research funding to his institution from the Clorox Company and consultant fees from Merck.

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

Early initiation of the antiviral oseltamivir (Tamiflu) reduces the risk for death in patients hospitalized with community-acquired pneumonia (CAP) but patients have to be tested for influenza first and that is not happening often enough, a large observational cohort of adult patients indicates.

“Early testing allows for early treatment, and we found that early treatment was associated with reduced mortality so testing patients during the flu season is crucial,” senior author Michael Rothberg, MD, MPH, of the Cleveland Clinic said in an interview.

“Even during the flu season, most patients with CAP in our study went untested for influenza [even though] those who received early oseltamivir exhibited lower 14-day in-hospital case fatality ... suggesting more widespread testing might improve patient outcomes,” the authors added.

The study was published online Feb. 5, 2022, in the journal CHEST.
 

Premier database

Data from the Premier Database – a hospital discharge database with information from over 600 hospitals in the United States – were analyzed between July 2010 and June 2015. Microbiological laboratory data was provided by 179 hospitals. “For each year, we evaluated the total percentage of patients tested for influenza A/B within 3 days of hospitalization,” lead author Abhishek Deshpande, MD, PhD, Cleveland Clinic, and colleagues explained.

A total of 166,268 patients with CAP were included in the study, among which only about one-quarter were tested for influenza. Some 11.5% tested positive for the flu, the authors noted. Testing did increase from 15.4% in 2010 to 35.6% in 2015 and it was higher at close to 29% during the influenza season, compared with only about 8% during the summer months.

Patients who were tested for influenza were younger at age 66.6 years, compared with untested patients, who were 70 years of age (P < .001). Tested patients were also less likely to have been admitted from a nursing facility (P < .001), were less likely to have been hospitalized in the preceding 6 months (P < .001) and have fewer comorbidities than those who were not tested (P < .001).

“Both groups had similar illness severities on admission,” the authors observed, “but patients who were tested were less likely to die in the hospital within 14 days,” the authors reported – at 6.7% versus 10.9% for untested patients (P < .001).

More than 80% of patients who tested positive for influenza received an antibacterial on day 1 of their admission, compared with virtually all those who were either not tested or who tested negative, the investigators added (P < .001). The mean duration of antibacterial therapy among patients with a bacterial coinfection was not influenced by influenza test results.

However, among those who tested positive for influenza, almost 60% received oseltamivir on day 1 whereas roughly 30% received treatment on day 2 or later. In fact, almost all patients who received early oseltamivir were tested for influenza on day 1, the investigators pointed out. Patients who received early oseltamivir had a 25% lower risk of death within the first 14 days in hospital at an adjusted odds ratio of 0.75 (95% confidence interval, 0.59-0.96).

Early initiation of the antiviral also reduced the risk of requiring subsequent ICU care by 36% at an aOR of 0.64; invasive mechanical ventilation by 46% at an aOR of 0.54, and the need for vasopressor therapy by 47% at an aOR of 0.53. All results were within the 95% confidence levels.

Early use of antiviral therapy also reduced both the length of hospital stay and the cost of that stay by 12%.
 

ATS-IDSA guidelines

As Dr. Deshpande noted, the American Thoracic Society and the Infectious Diseases Society of America guidelines recommend testing and empiric treatment of influenza in patients hospitalized with CAP. “Testing more inpatients especially during the flu season can reduce other diagnostic testing and improve antimicrobial stewardship,” Deshpande noted.

Thus, while the rate of testing for influenza did increase over the 5-year study interval, “there is substantial room for improvement,” he added, as a positive test clearly does trigger the need for intervention. As Dr. Deshpande also noted, the past two influenza seasons have been mild, but influenza activity has again picked up lately again in many parts of the United States.

With the COVID-19 pandemic overwhelming influenza over the past few years, “differentiating between the two based on symptoms alone can be challenging,” he acknowledged, “and clinicians will need to test and treat accordingly.” This is particularly important given that this study clearly indicates that early treatment with an antiviral can lower the risk of short-term mortality in hospitalized CAP patients.

One limitation of the study was the lack of data on time of symptom onset, which may be an important confounder of the effect of oseltamivir on outcomes, the authors point out. Asked to comment on the findings, Barbara Jones, MD, University of Utah Health, Salt Lake City, noted that timely antivirals for patients with influenza are highly effective at mitigating severe disease and are thus strongly recommended by practice guidelines.

“However, it is hard for clinicians to keep influenza on the radar and change testing and treatment approaches according to the season and prevalence [of influenza infections],” she said in an interview. “This is an important study that highlights this challenge.

“We need a better understanding of the solutions that have been effective at improving influenza recognition and treatment, possibly by studying facilities that perform well at this process,” she said.

Dr. Deshpande reported receiving research funding to his institution from the Clorox Company and consultant fees from Merck.

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

Early initiation of the antiviral oseltamivir (Tamiflu) reduces the risk for death in patients hospitalized with community-acquired pneumonia (CAP) but patients have to be tested for influenza first and that is not happening often enough, a large observational cohort of adult patients indicates.

“Early testing allows for early treatment, and we found that early treatment was associated with reduced mortality so testing patients during the flu season is crucial,” senior author Michael Rothberg, MD, MPH, of the Cleveland Clinic said in an interview.

“Even during the flu season, most patients with CAP in our study went untested for influenza [even though] those who received early oseltamivir exhibited lower 14-day in-hospital case fatality ... suggesting more widespread testing might improve patient outcomes,” the authors added.

The study was published online Feb. 5, 2022, in the journal CHEST.
 

Premier database

Data from the Premier Database – a hospital discharge database with information from over 600 hospitals in the United States – were analyzed between July 2010 and June 2015. Microbiological laboratory data was provided by 179 hospitals. “For each year, we evaluated the total percentage of patients tested for influenza A/B within 3 days of hospitalization,” lead author Abhishek Deshpande, MD, PhD, Cleveland Clinic, and colleagues explained.

A total of 166,268 patients with CAP were included in the study, among which only about one-quarter were tested for influenza. Some 11.5% tested positive for the flu, the authors noted. Testing did increase from 15.4% in 2010 to 35.6% in 2015 and it was higher at close to 29% during the influenza season, compared with only about 8% during the summer months.

Patients who were tested for influenza were younger at age 66.6 years, compared with untested patients, who were 70 years of age (P < .001). Tested patients were also less likely to have been admitted from a nursing facility (P < .001), were less likely to have been hospitalized in the preceding 6 months (P < .001) and have fewer comorbidities than those who were not tested (P < .001).

“Both groups had similar illness severities on admission,” the authors observed, “but patients who were tested were less likely to die in the hospital within 14 days,” the authors reported – at 6.7% versus 10.9% for untested patients (P < .001).

More than 80% of patients who tested positive for influenza received an antibacterial on day 1 of their admission, compared with virtually all those who were either not tested or who tested negative, the investigators added (P < .001). The mean duration of antibacterial therapy among patients with a bacterial coinfection was not influenced by influenza test results.

However, among those who tested positive for influenza, almost 60% received oseltamivir on day 1 whereas roughly 30% received treatment on day 2 or later. In fact, almost all patients who received early oseltamivir were tested for influenza on day 1, the investigators pointed out. Patients who received early oseltamivir had a 25% lower risk of death within the first 14 days in hospital at an adjusted odds ratio of 0.75 (95% confidence interval, 0.59-0.96).

Early initiation of the antiviral also reduced the risk of requiring subsequent ICU care by 36% at an aOR of 0.64; invasive mechanical ventilation by 46% at an aOR of 0.54, and the need for vasopressor therapy by 47% at an aOR of 0.53. All results were within the 95% confidence levels.

Early use of antiviral therapy also reduced both the length of hospital stay and the cost of that stay by 12%.
 

ATS-IDSA guidelines

As Dr. Deshpande noted, the American Thoracic Society and the Infectious Diseases Society of America guidelines recommend testing and empiric treatment of influenza in patients hospitalized with CAP. “Testing more inpatients especially during the flu season can reduce other diagnostic testing and improve antimicrobial stewardship,” Deshpande noted.

Thus, while the rate of testing for influenza did increase over the 5-year study interval, “there is substantial room for improvement,” he added, as a positive test clearly does trigger the need for intervention. As Dr. Deshpande also noted, the past two influenza seasons have been mild, but influenza activity has again picked up lately again in many parts of the United States.

With the COVID-19 pandemic overwhelming influenza over the past few years, “differentiating between the two based on symptoms alone can be challenging,” he acknowledged, “and clinicians will need to test and treat accordingly.” This is particularly important given that this study clearly indicates that early treatment with an antiviral can lower the risk of short-term mortality in hospitalized CAP patients.

One limitation of the study was the lack of data on time of symptom onset, which may be an important confounder of the effect of oseltamivir on outcomes, the authors point out. Asked to comment on the findings, Barbara Jones, MD, University of Utah Health, Salt Lake City, noted that timely antivirals for patients with influenza are highly effective at mitigating severe disease and are thus strongly recommended by practice guidelines.

“However, it is hard for clinicians to keep influenza on the radar and change testing and treatment approaches according to the season and prevalence [of influenza infections],” she said in an interview. “This is an important study that highlights this challenge.

“We need a better understanding of the solutions that have been effective at improving influenza recognition and treatment, possibly by studying facilities that perform well at this process,” she said.

Dr. Deshpande reported receiving research funding to his institution from the Clorox Company and consultant fees from Merck.

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

The American Academy of Pediatrics said it supports the Recommended Childhood and Adolescent Immunization Schedule: United States, 2022.

In a policy statement published online Feb. 17 in Pediatrics, the AAP said the updated recommendations differ little from those released last year by the Advisory Committee on Immunization Practices of the Centers for Disease Control and Prevention.

“The only significant change this year was to add the dengue vaccine to the schedule,” Sean T. O’Leary, MD, MPH, vice chair of the AAP’s 2021-2022 Committee on Infectious Diseases and a coauthor of the statement, told this news organization. “But that is really only relevant for children living in endemic areas, primarily Puerto Rico but some other smaller U.S .territories as well.”

Dengue fever also is endemic in American Samoa and the U.S. Virgin Islands.

Notably, a new section has been added on routine recommendations for use of the Dengvaxia vaccine.

The 2022 policy statement addresses regular immunization of children from birth to 18 years and catch-up vaccination for those aged 4 months to 18 years. In addition to the AAP, multiple complementary physician and nurse organizations have approved the updates. The ACIP schedule is revised annually to reflect current recommendations on vaccines licensed by the U.S. Food and Drug Administration.

Most of the other changes this year involve minor updates to clarify language or improve usability. “CDC and AAP are always working to make the schedule as user-friendly as possible, with improvements made every year,” Dr. O’Leary, professor of pediatric infectious diseases at the University of Colorado at Denver, Aurora, said.

In terms of physician acceptance, he added, “I don’t think any of the changes would be considered controversial.”

Among other updates and clarifications:

• For Haemophilus influenzae type b (Hib) vaccination, the text now includes recommendations for the hexavalent Vaxelis vaccine (diphtheria, tetanus, pertussis, polio, Hib, and hepatitis B) for both routine and catch-up vaccination.
• For hepatitis A, the relevant note has been updated to clarify the age for routine vaccination.
• For human papillomavirus (HPV), the note now clarifies when an HPV series is complete with no additional dose recommended.
• The special situations section has been amended to specify which persons with immunocompromising conditions such as HIV should receive three doses of HPV vaccine regardless of age at initial vaccination.
• For measles, mumps, and rubella, routine vaccination now includes recommendations on the combination measles, mumps, rubella, and varicella vaccine.
• For meningococcal serogroup A, C, W, and Y vaccines, the augmented text explains when these can be simultaneously administered with serogroup B meningococcal vaccines, preferably at different anatomic sites. The language for the dosing schedule for Menveo vaccination in infants also has been clarified.
• In the catch-up immunization schedule for late-starting children aged 4 months to 18 years, the text on Hib has been changed so that the minimum interval between dose two and dose three now refers to Vaxelis, while reference to the discontinued Comvax (Hib-Hep B) vaccine has been removed.

As in other years, graphic changes have been made to table coloration and layout to improve accessibility. And as before, the 2022 childhood and adolescent immunization schedule has been updated to ensure consistency between its format and that of the 2022 adult immunization schedules.

The AAP committee stressed that clinically significant adverse events after immunization should be reported to the Vaccine Adverse Event Reporting System.

The full 2022 schedule can be found on the CDC’s website.

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

The American Academy of Pediatrics said it supports the Recommended Childhood and Adolescent Immunization Schedule: United States, 2022.

In a policy statement published online Feb. 17 in Pediatrics, the AAP said the updated recommendations differ little from those released last year by the Advisory Committee on Immunization Practices of the Centers for Disease Control and Prevention.

“The only significant change this year was to add the dengue vaccine to the schedule,” Sean T. O’Leary, MD, MPH, vice chair of the AAP’s 2021-2022 Committee on Infectious Diseases and a coauthor of the statement, told this news organization. “But that is really only relevant for children living in endemic areas, primarily Puerto Rico but some other smaller U.S .territories as well.”

Dengue fever also is endemic in American Samoa and the U.S. Virgin Islands.

Notably, a new section has been added on routine recommendations for use of the Dengvaxia vaccine.

The 2022 policy statement addresses regular immunization of children from birth to 18 years and catch-up vaccination for those aged 4 months to 18 years. In addition to the AAP, multiple complementary physician and nurse organizations have approved the updates. The ACIP schedule is revised annually to reflect current recommendations on vaccines licensed by the U.S. Food and Drug Administration.

Most of the other changes this year involve minor updates to clarify language or improve usability. “CDC and AAP are always working to make the schedule as user-friendly as possible, with improvements made every year,” Dr. O’Leary, professor of pediatric infectious diseases at the University of Colorado at Denver, Aurora, said.

In terms of physician acceptance, he added, “I don’t think any of the changes would be considered controversial.”

Among other updates and clarifications:

• For Haemophilus influenzae type b (Hib) vaccination, the text now includes recommendations for the hexavalent Vaxelis vaccine (diphtheria, tetanus, pertussis, polio, Hib, and hepatitis B) for both routine and catch-up vaccination.
• For hepatitis A, the relevant note has been updated to clarify the age for routine vaccination.
• For human papillomavirus (HPV), the note now clarifies when an HPV series is complete with no additional dose recommended.
• The special situations section has been amended to specify which persons with immunocompromising conditions such as HIV should receive three doses of HPV vaccine regardless of age at initial vaccination.
• For measles, mumps, and rubella, routine vaccination now includes recommendations on the combination measles, mumps, rubella, and varicella vaccine.
• For meningococcal serogroup A, C, W, and Y vaccines, the augmented text explains when these can be simultaneously administered with serogroup B meningococcal vaccines, preferably at different anatomic sites. The language for the dosing schedule for Menveo vaccination in infants also has been clarified.
• In the catch-up immunization schedule for late-starting children aged 4 months to 18 years, the text on Hib has been changed so that the minimum interval between dose two and dose three now refers to Vaxelis, while reference to the discontinued Comvax (Hib-Hep B) vaccine has been removed.

As in other years, graphic changes have been made to table coloration and layout to improve accessibility. And as before, the 2022 childhood and adolescent immunization schedule has been updated to ensure consistency between its format and that of the 2022 adult immunization schedules.

The AAP committee stressed that clinically significant adverse events after immunization should be reported to the Vaccine Adverse Event Reporting System.

The full 2022 schedule can be found on the CDC’s website.

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

The American Academy of Pediatrics said it supports the Recommended Childhood and Adolescent Immunization Schedule: United States, 2022.

In a policy statement published online Feb. 17 in Pediatrics, the AAP said the updated recommendations differ little from those released last year by the Advisory Committee on Immunization Practices of the Centers for Disease Control and Prevention.

“The only significant change this year was to add the dengue vaccine to the schedule,” Sean T. O’Leary, MD, MPH, vice chair of the AAP’s 2021-2022 Committee on Infectious Diseases and a coauthor of the statement, told this news organization. “But that is really only relevant for children living in endemic areas, primarily Puerto Rico but some other smaller U.S .territories as well.”

Dengue fever also is endemic in American Samoa and the U.S. Virgin Islands.

Notably, a new section has been added on routine recommendations for use of the Dengvaxia vaccine.

The 2022 policy statement addresses regular immunization of children from birth to 18 years and catch-up vaccination for those aged 4 months to 18 years. In addition to the AAP, multiple complementary physician and nurse organizations have approved the updates. The ACIP schedule is revised annually to reflect current recommendations on vaccines licensed by the U.S. Food and Drug Administration.

Most of the other changes this year involve minor updates to clarify language or improve usability. “CDC and AAP are always working to make the schedule as user-friendly as possible, with improvements made every year,” Dr. O’Leary, professor of pediatric infectious diseases at the University of Colorado at Denver, Aurora, said.

In terms of physician acceptance, he added, “I don’t think any of the changes would be considered controversial.”

Among other updates and clarifications:

• For Haemophilus influenzae type b (Hib) vaccination, the text now includes recommendations for the hexavalent Vaxelis vaccine (diphtheria, tetanus, pertussis, polio, Hib, and hepatitis B) for both routine and catch-up vaccination.
• For hepatitis A, the relevant note has been updated to clarify the age for routine vaccination.
• For human papillomavirus (HPV), the note now clarifies when an HPV series is complete with no additional dose recommended.
• The special situations section has been amended to specify which persons with immunocompromising conditions such as HIV should receive three doses of HPV vaccine regardless of age at initial vaccination.
• For measles, mumps, and rubella, routine vaccination now includes recommendations on the combination measles, mumps, rubella, and varicella vaccine.
• For meningococcal serogroup A, C, W, and Y vaccines, the augmented text explains when these can be simultaneously administered with serogroup B meningococcal vaccines, preferably at different anatomic sites. The language for the dosing schedule for Menveo vaccination in infants also has been clarified.
• In the catch-up immunization schedule for late-starting children aged 4 months to 18 years, the text on Hib has been changed so that the minimum interval between dose two and dose three now refers to Vaxelis, while reference to the discontinued Comvax (Hib-Hep B) vaccine has been removed.

As in other years, graphic changes have been made to table coloration and layout to improve accessibility. And as before, the 2022 childhood and adolescent immunization schedule has been updated to ensure consistency between its format and that of the 2022 adult immunization schedules.

The AAP committee stressed that clinically significant adverse events after immunization should be reported to the Vaccine Adverse Event Reporting System.

The full 2022 schedule can be found on the CDC’s website.

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

Sepsis is an alarmingly common cause behind ICU admissions in patients with multiple sclerosis (MS), a retrospective, population-based cohort study indicates.

Furthermore, it contributes to a disproportionately high percentage of the short-term mortality risk among patients with MS admitted to the ICU, findings also show. Short-term mortality risk was defined in the study as a combination of in-hospital death or discharge to hospice.

“We found that the risk of short-term mortality in critically ill patients with MS is four times higher among those with sepsis ... so sepsis appears to be comparatively more lethal among patients with MS than in the general population,” Lavi Oud, MD, professor of medicine, Texas Tech University HSC at the Permian Basin, Odessa, said in an email.

“[Although] the specific mechanisms underlying the markedly higher risk of sepsis among patients with MS compared to the general population remain to be fully elucidated ... it’s thought that the risk may stem from the dysfunction of the immune system in these patients related to MS itself and to the potentially adverse effect of the immunomodulating therapy we use in these patients,” he added.

The study was published online Jan. 11 in the Journal of Critical Care.
 

Sepsis rates

The Texas Inpatient Public Use Data File was used to identify adults with a diagnosis of MS admitted to the hospital between 2010 and 2017. Among the 19,837 patients with MS admitted to the ICU during the study interval, almost one-third (31.5%) had sepsis, investigators report. “The rate of sepsis among ICU admissions increased with age, ranging from 20.8% among those aged 18-44 to 39.4% among those aged 65 years or older,” investigators note.

The most common site of infection among MS patients admitted to the ICU were urinary in nature (65.2%), followed by respiratory (36.1%). A smaller proportion of infections (7.6%) involved the skin and soft tissues, researchers note. A full one-quarter of patients developed septic shock in response to their infection while the length of stay among patients with sepsis (mean of 10.9 days) was substantially longer than it was for those without sepsis (mean of 5.6 days), they observe.

At a mean total hospital cost of $121,797 for each ICU patient with sepsis, the cost of caring for each patient was nearly twofold higher than the mean total cost of taking care of ICU patients without sepsis (mean total cost, $65,179). On adjusted analysis, sepsis was associated with a 42.7% (95% confidence interval, 38.9-46.5; P < .0001) longer length of hospital stay and a 26.2% (95% CI, 23.1-29.1; P < .0001) higher total hospital cost compared with patients without sepsis, the authors point out.

Indeed, ICU admissions with sepsis accounted for 47.3% of all hospital days and for 46.1% of the aggregate hospital charges among all MS patients admitted to the ICU.

“The adjusted probability of short-term mortality was 13.4% (95% CI, 13.0-13.7) among ICU admissions with sepsis and 3.3% (95% CI, 3.2-3.4) among ICU admissions without sepsis,” the authors report.

This translated into a 44% higher risk of short-term mortality at an adjusted odds ratio of 1.44 (95% CI, 1.23-1.69; P < .0001) for those with sepsis, compared with those without, they add. Among all ICU admissions, sepsis was reported in over two-thirds of documented short-term mortality events. The risk of short-term mortality was also almost threefold higher among patients with sepsis who were age 65 years and older compared with patients aged 18-44. 

As Dr. Oud noted, there is no specific test for sepsis, and it can initially present in an atypical manner, especially in older, frailer, chronically ill patients as well as in patients with immune dysfunction. “Thus, considering sepsis as a possible cause of new deterioration in a patient’s condition is essential, along with the timely start of sepsis-related care,” Dr. Oud observed.

A limitation of the study was that the dataset did not include information on the type of MS a patient had, the duration of their illness, the treatment received, the level of disease activity, or the level of disability.

The study had no specific funding. The authors have disclosed no relevant financial relationships.

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

Sepsis is an alarmingly common cause behind ICU admissions in patients with multiple sclerosis (MS), a retrospective, population-based cohort study indicates.

Furthermore, it contributes to a disproportionately high percentage of the short-term mortality risk among patients with MS admitted to the ICU, findings also show. Short-term mortality risk was defined in the study as a combination of in-hospital death or discharge to hospice.

“We found that the risk of short-term mortality in critically ill patients with MS is four times higher among those with sepsis ... so sepsis appears to be comparatively more lethal among patients with MS than in the general population,” Lavi Oud, MD, professor of medicine, Texas Tech University HSC at the Permian Basin, Odessa, said in an email.

“[Although] the specific mechanisms underlying the markedly higher risk of sepsis among patients with MS compared to the general population remain to be fully elucidated ... it’s thought that the risk may stem from the dysfunction of the immune system in these patients related to MS itself and to the potentially adverse effect of the immunomodulating therapy we use in these patients,” he added.

The study was published online Jan. 11 in the Journal of Critical Care.
 

Sepsis rates

The Texas Inpatient Public Use Data File was used to identify adults with a diagnosis of MS admitted to the hospital between 2010 and 2017. Among the 19,837 patients with MS admitted to the ICU during the study interval, almost one-third (31.5%) had sepsis, investigators report. “The rate of sepsis among ICU admissions increased with age, ranging from 20.8% among those aged 18-44 to 39.4% among those aged 65 years or older,” investigators note.

The most common site of infection among MS patients admitted to the ICU were urinary in nature (65.2%), followed by respiratory (36.1%). A smaller proportion of infections (7.6%) involved the skin and soft tissues, researchers note. A full one-quarter of patients developed septic shock in response to their infection while the length of stay among patients with sepsis (mean of 10.9 days) was substantially longer than it was for those without sepsis (mean of 5.6 days), they observe.

At a mean total hospital cost of $121,797 for each ICU patient with sepsis, the cost of caring for each patient was nearly twofold higher than the mean total cost of taking care of ICU patients without sepsis (mean total cost, $65,179). On adjusted analysis, sepsis was associated with a 42.7% (95% confidence interval, 38.9-46.5; P < .0001) longer length of hospital stay and a 26.2% (95% CI, 23.1-29.1; P < .0001) higher total hospital cost compared with patients without sepsis, the authors point out.

Indeed, ICU admissions with sepsis accounted for 47.3% of all hospital days and for 46.1% of the aggregate hospital charges among all MS patients admitted to the ICU.

“The adjusted probability of short-term mortality was 13.4% (95% CI, 13.0-13.7) among ICU admissions with sepsis and 3.3% (95% CI, 3.2-3.4) among ICU admissions without sepsis,” the authors report.

This translated into a 44% higher risk of short-term mortality at an adjusted odds ratio of 1.44 (95% CI, 1.23-1.69; P < .0001) for those with sepsis, compared with those without, they add. Among all ICU admissions, sepsis was reported in over two-thirds of documented short-term mortality events. The risk of short-term mortality was also almost threefold higher among patients with sepsis who were age 65 years and older compared with patients aged 18-44. 

As Dr. Oud noted, there is no specific test for sepsis, and it can initially present in an atypical manner, especially in older, frailer, chronically ill patients as well as in patients with immune dysfunction. “Thus, considering sepsis as a possible cause of new deterioration in a patient’s condition is essential, along with the timely start of sepsis-related care,” Dr. Oud observed.

A limitation of the study was that the dataset did not include information on the type of MS a patient had, the duration of their illness, the treatment received, the level of disease activity, or the level of disability.

The study had no specific funding. The authors have disclosed no relevant financial relationships.

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

Sepsis is an alarmingly common cause behind ICU admissions in patients with multiple sclerosis (MS), a retrospective, population-based cohort study indicates.

Furthermore, it contributes to a disproportionately high percentage of the short-term mortality risk among patients with MS admitted to the ICU, findings also show. Short-term mortality risk was defined in the study as a combination of in-hospital death or discharge to hospice.

“We found that the risk of short-term mortality in critically ill patients with MS is four times higher among those with sepsis ... so sepsis appears to be comparatively more lethal among patients with MS than in the general population,” Lavi Oud, MD, professor of medicine, Texas Tech University HSC at the Permian Basin, Odessa, said in an email.

“[Although] the specific mechanisms underlying the markedly higher risk of sepsis among patients with MS compared to the general population remain to be fully elucidated ... it’s thought that the risk may stem from the dysfunction of the immune system in these patients related to MS itself and to the potentially adverse effect of the immunomodulating therapy we use in these patients,” he added.

The study was published online Jan. 11 in the Journal of Critical Care.
 

Sepsis rates

The Texas Inpatient Public Use Data File was used to identify adults with a diagnosis of MS admitted to the hospital between 2010 and 2017. Among the 19,837 patients with MS admitted to the ICU during the study interval, almost one-third (31.5%) had sepsis, investigators report. “The rate of sepsis among ICU admissions increased with age, ranging from 20.8% among those aged 18-44 to 39.4% among those aged 65 years or older,” investigators note.

The most common site of infection among MS patients admitted to the ICU were urinary in nature (65.2%), followed by respiratory (36.1%). A smaller proportion of infections (7.6%) involved the skin and soft tissues, researchers note. A full one-quarter of patients developed septic shock in response to their infection while the length of stay among patients with sepsis (mean of 10.9 days) was substantially longer than it was for those without sepsis (mean of 5.6 days), they observe.

At a mean total hospital cost of $121,797 for each ICU patient with sepsis, the cost of caring for each patient was nearly twofold higher than the mean total cost of taking care of ICU patients without sepsis (mean total cost, $65,179). On adjusted analysis, sepsis was associated with a 42.7% (95% confidence interval, 38.9-46.5; P < .0001) longer length of hospital stay and a 26.2% (95% CI, 23.1-29.1; P < .0001) higher total hospital cost compared with patients without sepsis, the authors point out.

Indeed, ICU admissions with sepsis accounted for 47.3% of all hospital days and for 46.1% of the aggregate hospital charges among all MS patients admitted to the ICU.

“The adjusted probability of short-term mortality was 13.4% (95% CI, 13.0-13.7) among ICU admissions with sepsis and 3.3% (95% CI, 3.2-3.4) among ICU admissions without sepsis,” the authors report.

This translated into a 44% higher risk of short-term mortality at an adjusted odds ratio of 1.44 (95% CI, 1.23-1.69; P < .0001) for those with sepsis, compared with those without, they add. Among all ICU admissions, sepsis was reported in over two-thirds of documented short-term mortality events. The risk of short-term mortality was also almost threefold higher among patients with sepsis who were age 65 years and older compared with patients aged 18-44. 

As Dr. Oud noted, there is no specific test for sepsis, and it can initially present in an atypical manner, especially in older, frailer, chronically ill patients as well as in patients with immune dysfunction. “Thus, considering sepsis as a possible cause of new deterioration in a patient’s condition is essential, along with the timely start of sepsis-related care,” Dr. Oud observed.

A limitation of the study was that the dataset did not include information on the type of MS a patient had, the duration of their illness, the treatment received, the level of disease activity, or the level of disability.

The study had no specific funding. The authors have disclosed no relevant financial relationships.

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

Nearly one-third of adults over age 65 developed one or more new medical conditions in the weeks following a COVID-19 infection, according to new research.

The findings of the observational study, which were published in the BMJ, show the risk of a new condition being triggered by COVID is more than twice as high in seniors, compared with younger patients. Plus, the researchers observed an even higher risk among those who were hospitalized, with nearly half (46%) of patients having developed new conditions after the acute COVID-19 infection period.

Respiratory failure with shortness of breath was the most common postacute sequela, but a wide range of heart, kidney, lung, liver, cognitive, mental health, and other conditions were diagnosed at least 3 weeks after initial infection and persisted beyond 30 days.

This is one of the first studies to specifically describe the incidence and severity of new conditions triggered by COVID-19 infection in a general sample of older adults, said study author Ken Cohen MD, FACP, executive director of translational research at Optum Labs and national senior medical director at Optum Care.

“Much of what has been published on the postacute sequelae of COVID-19 has been predominantly from a younger population, and many of the patients had been hospitalized,” Dr. Cohen noted. “This was the first study to focus on a large population of seniors, most of whom did not require hospitalization.”

Dr. Cohen and colleagues reviewed the health insurance records of more than 133,000 Medicare beneficiaries aged 65 or older who were diagnosed with COVID-19 before April 2020. They also matched individuals by age, race, sex, hospitalization status, and other factors to comparison groups without COVID-19 (one from 2020 and one from 2019), and to a group diagnosed with other lower respiratory tract viral infections before the pandemic.
 

Risk of developing new conditions was higher in hospitalized

After acute COVID-19 infection, 32% of seniors sought medical care for at least one new medical condition in 2020, compared with 21% of uninfected people in the same year.

The most commonly observed conditions included:

• Respiratory failure (7.55% higher risk).
• Fatigue (5.66% higher risk).
• High blood pressure (4.43% higher risk).
• Memory problems (2.63% higher risk).
• Kidney injury (2.59% higher risk).
• Mental health diagnoses (2.5% higher risk).
• Blood-clotting disorders (1.47 % higher risk).
• Heart rhythm disorders (2.9% higher risk).

The risk of developing new conditions was even higher among those 23,486 who were hospitalized in 2020. Those individuals showed a 23.6% higher risk for developing at least one new condition, compared with uninfected seniors in the same year. Also, patients older than 75 had a higher risk for neurological disorders, including dementia, encephalopathy, and memory problems. The researchers also found that respiratory failure and kidney injury were significantly more likely to affect men and Black patients.

When those who had COVID were compared with the group with other lower respiratory viral infections before the pandemic, only the risks of respiratory failure (2.39% higher), dementia (0.71% higher), and fatigue (0.18% higher) were higher.

Primary care providers can learn from these data to better evaluate and manage their geriatric patients with COVID-19 infection, said Amit Shah, MD, a geriatrician with the Mayo Clinic in Phoenix, in an interview.

“We must assess older patients who have had COVID-19 for more than just improvement from the respiratory symptoms of COVID-19 in post-COVID follow-up visits,” he said. “Older individuals with frailty have vulnerability to subsequent complications from severe illnesses and it is common to see post-illness diagnoses, such as new diagnosis of delirium; dementia; or renal, respiratory, or cardiac issues that is precipitated by the original illness. This study confirms that this is likely the case with COVID-19 as well.

“Primary care physicians should be vigilant for these complications, including attention to the rehabilitation needs of older patients with longer-term postviral fatigue from COVID-19,” Dr. Shah added.
 

Data predates ‘Omicron wave’

It remains uncertain whether sequelae will differ with the Omicron variant, but the findings remain applicable, Dr. Cohen said.

“We know that illness from the Omicron variant is on average less severe in those that have been vaccinated. However, throughout the Omicron wave, individuals who have not been vaccinated continue to have significant rates of serious illness and hospitalization,” he said.

“Our findings showed that serious illness with hospitalization was associated with a higher rate of sequelae. It can therefore be inferred that the rates of sequelae seen in our study would continue to occur in unvaccinated individuals who contract Omicron, but might occur less frequently in vaccinated individuals who contract Omicron and have less severe illness.”

Dr. Cohen serves as a consultant for Pfizer. Dr. Shah has disclosed no relevant financial relationships.

Nearly one-third of adults over age 65 developed one or more new medical conditions in the weeks following a COVID-19 infection, according to new research.

The findings of the observational study, which were published in the BMJ, show the risk of a new condition being triggered by COVID is more than twice as high in seniors, compared with younger patients. Plus, the researchers observed an even higher risk among those who were hospitalized, with nearly half (46%) of patients having developed new conditions after the acute COVID-19 infection period.

Respiratory failure with shortness of breath was the most common postacute sequela, but a wide range of heart, kidney, lung, liver, cognitive, mental health, and other conditions were diagnosed at least 3 weeks after initial infection and persisted beyond 30 days.

This is one of the first studies to specifically describe the incidence and severity of new conditions triggered by COVID-19 infection in a general sample of older adults, said study author Ken Cohen MD, FACP, executive director of translational research at Optum Labs and national senior medical director at Optum Care.

“Much of what has been published on the postacute sequelae of COVID-19 has been predominantly from a younger population, and many of the patients had been hospitalized,” Dr. Cohen noted. “This was the first study to focus on a large population of seniors, most of whom did not require hospitalization.”

Dr. Cohen and colleagues reviewed the health insurance records of more than 133,000 Medicare beneficiaries aged 65 or older who were diagnosed with COVID-19 before April 2020. They also matched individuals by age, race, sex, hospitalization status, and other factors to comparison groups without COVID-19 (one from 2020 and one from 2019), and to a group diagnosed with other lower respiratory tract viral infections before the pandemic.
 

Risk of developing new conditions was higher in hospitalized

After acute COVID-19 infection, 32% of seniors sought medical care for at least one new medical condition in 2020, compared with 21% of uninfected people in the same year.

The most commonly observed conditions included:

• Respiratory failure (7.55% higher risk).
• Fatigue (5.66% higher risk).
• High blood pressure (4.43% higher risk).
• Memory problems (2.63% higher risk).
• Kidney injury (2.59% higher risk).
• Mental health diagnoses (2.5% higher risk).
• Blood-clotting disorders (1.47 % higher risk).
• Heart rhythm disorders (2.9% higher risk).

The risk of developing new conditions was even higher among those 23,486 who were hospitalized in 2020. Those individuals showed a 23.6% higher risk for developing at least one new condition, compared with uninfected seniors in the same year. Also, patients older than 75 had a higher risk for neurological disorders, including dementia, encephalopathy, and memory problems. The researchers also found that respiratory failure and kidney injury were significantly more likely to affect men and Black patients.

When those who had COVID were compared with the group with other lower respiratory viral infections before the pandemic, only the risks of respiratory failure (2.39% higher), dementia (0.71% higher), and fatigue (0.18% higher) were higher.

Primary care providers can learn from these data to better evaluate and manage their geriatric patients with COVID-19 infection, said Amit Shah, MD, a geriatrician with the Mayo Clinic in Phoenix, in an interview.

“We must assess older patients who have had COVID-19 for more than just improvement from the respiratory symptoms of COVID-19 in post-COVID follow-up visits,” he said. “Older individuals with frailty have vulnerability to subsequent complications from severe illnesses and it is common to see post-illness diagnoses, such as new diagnosis of delirium; dementia; or renal, respiratory, or cardiac issues that is precipitated by the original illness. This study confirms that this is likely the case with COVID-19 as well.

“Primary care physicians should be vigilant for these complications, including attention to the rehabilitation needs of older patients with longer-term postviral fatigue from COVID-19,” Dr. Shah added.
 

Data predates ‘Omicron wave’

It remains uncertain whether sequelae will differ with the Omicron variant, but the findings remain applicable, Dr. Cohen said.

“We know that illness from the Omicron variant is on average less severe in those that have been vaccinated. However, throughout the Omicron wave, individuals who have not been vaccinated continue to have significant rates of serious illness and hospitalization,” he said.

“Our findings showed that serious illness with hospitalization was associated with a higher rate of sequelae. It can therefore be inferred that the rates of sequelae seen in our study would continue to occur in unvaccinated individuals who contract Omicron, but might occur less frequently in vaccinated individuals who contract Omicron and have less severe illness.”

Dr. Cohen serves as a consultant for Pfizer. Dr. Shah has disclosed no relevant financial relationships.

Nearly one-third of adults over age 65 developed one or more new medical conditions in the weeks following a COVID-19 infection, according to new research.

The findings of the observational study, which were published in the BMJ, show the risk of a new condition being triggered by COVID is more than twice as high in seniors, compared with younger patients. Plus, the researchers observed an even higher risk among those who were hospitalized, with nearly half (46%) of patients having developed new conditions after the acute COVID-19 infection period.

Respiratory failure with shortness of breath was the most common postacute sequela, but a wide range of heart, kidney, lung, liver, cognitive, mental health, and other conditions were diagnosed at least 3 weeks after initial infection and persisted beyond 30 days.

This is one of the first studies to specifically describe the incidence and severity of new conditions triggered by COVID-19 infection in a general sample of older adults, said study author Ken Cohen MD, FACP, executive director of translational research at Optum Labs and national senior medical director at Optum Care.

“Much of what has been published on the postacute sequelae of COVID-19 has been predominantly from a younger population, and many of the patients had been hospitalized,” Dr. Cohen noted. “This was the first study to focus on a large population of seniors, most of whom did not require hospitalization.”

Dr. Cohen and colleagues reviewed the health insurance records of more than 133,000 Medicare beneficiaries aged 65 or older who were diagnosed with COVID-19 before April 2020. They also matched individuals by age, race, sex, hospitalization status, and other factors to comparison groups without COVID-19 (one from 2020 and one from 2019), and to a group diagnosed with other lower respiratory tract viral infections before the pandemic.
 

Risk of developing new conditions was higher in hospitalized

After acute COVID-19 infection, 32% of seniors sought medical care for at least one new medical condition in 2020, compared with 21% of uninfected people in the same year.

The most commonly observed conditions included:

• Respiratory failure (7.55% higher risk).
• Fatigue (5.66% higher risk).
• High blood pressure (4.43% higher risk).
• Memory problems (2.63% higher risk).
• Kidney injury (2.59% higher risk).
• Mental health diagnoses (2.5% higher risk).
• Blood-clotting disorders (1.47 % higher risk).
• Heart rhythm disorders (2.9% higher risk).

The risk of developing new conditions was even higher among those 23,486 who were hospitalized in 2020. Those individuals showed a 23.6% higher risk for developing at least one new condition, compared with uninfected seniors in the same year. Also, patients older than 75 had a higher risk for neurological disorders, including dementia, encephalopathy, and memory problems. The researchers also found that respiratory failure and kidney injury were significantly more likely to affect men and Black patients.

When those who had COVID were compared with the group with other lower respiratory viral infections before the pandemic, only the risks of respiratory failure (2.39% higher), dementia (0.71% higher), and fatigue (0.18% higher) were higher.

Primary care providers can learn from these data to better evaluate and manage their geriatric patients with COVID-19 infection, said Amit Shah, MD, a geriatrician with the Mayo Clinic in Phoenix, in an interview.

“We must assess older patients who have had COVID-19 for more than just improvement from the respiratory symptoms of COVID-19 in post-COVID follow-up visits,” he said. “Older individuals with frailty have vulnerability to subsequent complications from severe illnesses and it is common to see post-illness diagnoses, such as new diagnosis of delirium; dementia; or renal, respiratory, or cardiac issues that is precipitated by the original illness. This study confirms that this is likely the case with COVID-19 as well.

“Primary care physicians should be vigilant for these complications, including attention to the rehabilitation needs of older patients with longer-term postviral fatigue from COVID-19,” Dr. Shah added.
 

Data predates ‘Omicron wave’

It remains uncertain whether sequelae will differ with the Omicron variant, but the findings remain applicable, Dr. Cohen said.

“We know that illness from the Omicron variant is on average less severe in those that have been vaccinated. However, throughout the Omicron wave, individuals who have not been vaccinated continue to have significant rates of serious illness and hospitalization,” he said.

“Our findings showed that serious illness with hospitalization was associated with a higher rate of sequelae. It can therefore be inferred that the rates of sequelae seen in our study would continue to occur in unvaccinated individuals who contract Omicron, but might occur less frequently in vaccinated individuals who contract Omicron and have less severe illness.”

Dr. Cohen serves as a consultant for Pfizer. Dr. Shah has disclosed no relevant financial relationships.

Bronchiolitis is the leading cause of infant hospitalizations in the United States and Europe, and almost one-third of these patients go on to develop asthma later in childhood.

But a multinational team of researchers has presented evidence that could avoid that outcome. They identified four different subtypes of bronchiolitis along with a decision tree that can determine which infants are most likely to develop asthma as they get older.

Reporting in the journal eClinical Medicine, Michimasa Fujiogi, MD, of Massachusetts General Hospital and Harvard University, Boston, and colleagues analyzed three multicenter prospective cohort studies that included a combined 3,081 infants hospitalized with severe bronchiolitis.

“This study added a base for the early identification of high-risk patients during early infancy,” Dr. Fujiogi said in an interview. “Using the prediction rule of this study, it is possible to identify groups at high risk of asthma during a critical period of airway development – early infancy.”

The researchers identified four clinically distinct and reproducible profiles of infants hospitalized for bronchiolitis:

• A: characterized by a history of breathing problems and eczema, rhinovirus infection, and low prevalence of respiratory syncytial virus (RSV) infection.
• B: characterized by the classic symptoms of wheezing and cough at presentation, a low prevalence of previous breathing problems and rhinovirus infection, and a high likelihood of RSV infection.
• C: the most severe group, characterized by inadequate oral intake, severe retraction at presentation, and longer hospital stays.
• D: the least ill group, with little history of breathing problems but inadequate oral intake with no or mild retraction.

Infants with profile A had the highest risk for developing asthma – more than 250% greater than with typical bronchiolitis. They were also older and were more likely to have parents who had asthma – and none had solo-RSV infection. In the overall analysis, the risk for developing asthma by age 6 or 7 was 23%.

The researchers stated that the decision tree accurately predicts the high-risk profile with high degrees of sensitivity and specificity. The decision tree used four predictors that together defined infants with profile A: RSV infection status, previous breathing problems, eczema, and parental asthma.

“Our data would facilitate the development of profile-specific prevention strategies for asthma – for example, modification of host response, prophylaxis for severe viral infection – by identifying asthma risk groups early in infancy,” Dr. Fujiogi said.

The study received funding from the National Institutes of Health. Dr. Fujiogi and coauthors have disclosed no relevant financial relationships.

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

Bronchiolitis is the leading cause of infant hospitalizations in the United States and Europe, and almost one-third of these patients go on to develop asthma later in childhood.

But a multinational team of researchers has presented evidence that could avoid that outcome. They identified four different subtypes of bronchiolitis along with a decision tree that can determine which infants are most likely to develop asthma as they get older.

Reporting in the journal eClinical Medicine, Michimasa Fujiogi, MD, of Massachusetts General Hospital and Harvard University, Boston, and colleagues analyzed three multicenter prospective cohort studies that included a combined 3,081 infants hospitalized with severe bronchiolitis.

“This study added a base for the early identification of high-risk patients during early infancy,” Dr. Fujiogi said in an interview. “Using the prediction rule of this study, it is possible to identify groups at high risk of asthma during a critical period of airway development – early infancy.”

The researchers identified four clinically distinct and reproducible profiles of infants hospitalized for bronchiolitis:

• A: characterized by a history of breathing problems and eczema, rhinovirus infection, and low prevalence of respiratory syncytial virus (RSV) infection.
• B: characterized by the classic symptoms of wheezing and cough at presentation, a low prevalence of previous breathing problems and rhinovirus infection, and a high likelihood of RSV infection.
• C: the most severe group, characterized by inadequate oral intake, severe retraction at presentation, and longer hospital stays.
• D: the least ill group, with little history of breathing problems but inadequate oral intake with no or mild retraction.

Infants with profile A had the highest risk for developing asthma – more than 250% greater than with typical bronchiolitis. They were also older and were more likely to have parents who had asthma – and none had solo-RSV infection. In the overall analysis, the risk for developing asthma by age 6 or 7 was 23%.

The researchers stated that the decision tree accurately predicts the high-risk profile with high degrees of sensitivity and specificity. The decision tree used four predictors that together defined infants with profile A: RSV infection status, previous breathing problems, eczema, and parental asthma.

“Our data would facilitate the development of profile-specific prevention strategies for asthma – for example, modification of host response, prophylaxis for severe viral infection – by identifying asthma risk groups early in infancy,” Dr. Fujiogi said.

The study received funding from the National Institutes of Health. Dr. Fujiogi and coauthors have disclosed no relevant financial relationships.

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

Bronchiolitis is the leading cause of infant hospitalizations in the United States and Europe, and almost one-third of these patients go on to develop asthma later in childhood.

But a multinational team of researchers has presented evidence that could avoid that outcome. They identified four different subtypes of bronchiolitis along with a decision tree that can determine which infants are most likely to develop asthma as they get older.

Reporting in the journal eClinical Medicine, Michimasa Fujiogi, MD, of Massachusetts General Hospital and Harvard University, Boston, and colleagues analyzed three multicenter prospective cohort studies that included a combined 3,081 infants hospitalized with severe bronchiolitis.

“This study added a base for the early identification of high-risk patients during early infancy,” Dr. Fujiogi said in an interview. “Using the prediction rule of this study, it is possible to identify groups at high risk of asthma during a critical period of airway development – early infancy.”

The researchers identified four clinically distinct and reproducible profiles of infants hospitalized for bronchiolitis:

• A: characterized by a history of breathing problems and eczema, rhinovirus infection, and low prevalence of respiratory syncytial virus (RSV) infection.
• B: characterized by the classic symptoms of wheezing and cough at presentation, a low prevalence of previous breathing problems and rhinovirus infection, and a high likelihood of RSV infection.
• C: the most severe group, characterized by inadequate oral intake, severe retraction at presentation, and longer hospital stays.
• D: the least ill group, with little history of breathing problems but inadequate oral intake with no or mild retraction.

Infants with profile A had the highest risk for developing asthma – more than 250% greater than with typical bronchiolitis. They were also older and were more likely to have parents who had asthma – and none had solo-RSV infection. In the overall analysis, the risk for developing asthma by age 6 or 7 was 23%.

The researchers stated that the decision tree accurately predicts the high-risk profile with high degrees of sensitivity and specificity. The decision tree used four predictors that together defined infants with profile A: RSV infection status, previous breathing problems, eczema, and parental asthma.

“Our data would facilitate the development of profile-specific prevention strategies for asthma – for example, modification of host response, prophylaxis for severe viral infection – by identifying asthma risk groups early in infancy,” Dr. Fujiogi said.

The study received funding from the National Institutes of Health. Dr. Fujiogi and coauthors have disclosed no relevant financial relationships.

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

Many factors influence a child’s subsequent susceptibility to respiratory tract infection (RTI), including breastfeeding, crowded conditions, and exposure to environmental tobacco. Now researchers have found that asymptomatic viral infection in the first days of a baby’s life are linked to a greater risk of respiratory infections in later life.

The new research, published in Nature Microbiology, was conducted as part of the Microbiome Utrecht Infant Study (MUIS), a healthy infant birth cohort study that’s been running for 6 years.

In their study, the authors explained how the respiratory tract is “populated by a specialized microbial ecosystem, which is seeded during and directly following birth,” adding that, “despite recognition of many host and environmental factors known to modulate RTI susceptibility, the mechanism by which a child develops recurrent or severe RTIs, while others remain healthy, remains largely unknown”.

Researchers from the University of Edinburgh and University Medical Centre Utrecht (the Netherlands) examined nasal mucosa samples of 114 babies at various times from birth until 12 months of age. They then analyzed the gene activity of the babies’ nasal mucosa, the microbes present in the lining of the nose, and any viruses that infected the children.
 

Interferon-related mucosal gene activity

The researchers described how the microbiome – the community of microbes in the body – of a newborn baby can be influenced by many things, including delivery method, breastfeeding, antibiotics and the hospital environment. They highlighted how viruses were found to interact with a newborn’s immune system and microbiome in a way that affected both a child’s risk, and number, of subsequent infections.

They explained how when a viral infection was detected in the first days after birth, which they said largely occurred asymptomatically, specific mucosal genes were activated – genes involved with interferons – coinciding with a change in the composition of the microbiome, promoting the growth of potentially harmful microbes.

“The interferon-related gene activity caused by an early first viral infection is thought to create a proinflammatory environment that makes babies susceptible to future infections,” they said, adding that in their study they have demonstrated that “first asymptomatic viral encounters were associated with increased interferon signaling, and preceded the development of disadvantageous respiratory microbiota profiles and clinical RTIs”.
 

Proinflammatory and microbiologically perturbed environment

Debby Bogaert, PhD, chair of paediatric medicine at the University of Edinburgh, said: “We were surprised to see viral infections occur so early in life, and go mostly unnoticed, probably because the infant’s immune system is in what is known as a state of tolerance after birth. Despite this, these infections seem to affect a normal immune development, which is important to know.”

The authors wrote that their data supports the hypothesis that first viral encounters trigger an interferon-associated proinflammatory environment, which then further drives airway inflammation and symptomatology in a “self-enforcing positive feedback loop”. They said that this “proinflammatory and microbiologically perturbed environment in turn renders an individual more vulnerable to recurrent viral-induced RTIs”.

Wouter de Steenhuijsen, PhD, postdoctoral investigator at University Medical Centre Utrecht, said: “Although further work will be needed to confirm the causality of our findings, the data from this study indicate that early-life encounters with respiratory viruses – especially during the first days of life – may set the tone for subsequent non-beneficial host-microbe interactions, which are related to an infection risk and possibly long term respiratory health.”

Dr. Bogaert added: “Only from birth onwards will an infant start to develop its microbiome. Limiting the number of viral encounters in those first days to weeks of life might be essential for a healthy immune and microbiome development, and consequently long term respiratory health.”

A version of this article first appeared on Medscape UK.

Many factors influence a child’s subsequent susceptibility to respiratory tract infection (RTI), including breastfeeding, crowded conditions, and exposure to environmental tobacco. Now researchers have found that asymptomatic viral infection in the first days of a baby’s life are linked to a greater risk of respiratory infections in later life.

The new research, published in Nature Microbiology, was conducted as part of the Microbiome Utrecht Infant Study (MUIS), a healthy infant birth cohort study that’s been running for 6 years.

In their study, the authors explained how the respiratory tract is “populated by a specialized microbial ecosystem, which is seeded during and directly following birth,” adding that, “despite recognition of many host and environmental factors known to modulate RTI susceptibility, the mechanism by which a child develops recurrent or severe RTIs, while others remain healthy, remains largely unknown”.

Researchers from the University of Edinburgh and University Medical Centre Utrecht (the Netherlands) examined nasal mucosa samples of 114 babies at various times from birth until 12 months of age. They then analyzed the gene activity of the babies’ nasal mucosa, the microbes present in the lining of the nose, and any viruses that infected the children.
 

Interferon-related mucosal gene activity

The researchers described how the microbiome – the community of microbes in the body – of a newborn baby can be influenced by many things, including delivery method, breastfeeding, antibiotics and the hospital environment. They highlighted how viruses were found to interact with a newborn’s immune system and microbiome in a way that affected both a child’s risk, and number, of subsequent infections.

They explained how when a viral infection was detected in the first days after birth, which they said largely occurred asymptomatically, specific mucosal genes were activated – genes involved with interferons – coinciding with a change in the composition of the microbiome, promoting the growth of potentially harmful microbes.

“The interferon-related gene activity caused by an early first viral infection is thought to create a proinflammatory environment that makes babies susceptible to future infections,” they said, adding that in their study they have demonstrated that “first asymptomatic viral encounters were associated with increased interferon signaling, and preceded the development of disadvantageous respiratory microbiota profiles and clinical RTIs”.
 

Proinflammatory and microbiologically perturbed environment

Debby Bogaert, PhD, chair of paediatric medicine at the University of Edinburgh, said: “We were surprised to see viral infections occur so early in life, and go mostly unnoticed, probably because the infant’s immune system is in what is known as a state of tolerance after birth. Despite this, these infections seem to affect a normal immune development, which is important to know.”

The authors wrote that their data supports the hypothesis that first viral encounters trigger an interferon-associated proinflammatory environment, which then further drives airway inflammation and symptomatology in a “self-enforcing positive feedback loop”. They said that this “proinflammatory and microbiologically perturbed environment in turn renders an individual more vulnerable to recurrent viral-induced RTIs”.

Wouter de Steenhuijsen, PhD, postdoctoral investigator at University Medical Centre Utrecht, said: “Although further work will be needed to confirm the causality of our findings, the data from this study indicate that early-life encounters with respiratory viruses – especially during the first days of life – may set the tone for subsequent non-beneficial host-microbe interactions, which are related to an infection risk and possibly long term respiratory health.”

Dr. Bogaert added: “Only from birth onwards will an infant start to develop its microbiome. Limiting the number of viral encounters in those first days to weeks of life might be essential for a healthy immune and microbiome development, and consequently long term respiratory health.”

A version of this article first appeared on Medscape UK.

Many factors influence a child’s subsequent susceptibility to respiratory tract infection (RTI), including breastfeeding, crowded conditions, and exposure to environmental tobacco. Now researchers have found that asymptomatic viral infection in the first days of a baby’s life are linked to a greater risk of respiratory infections in later life.

The new research, published in Nature Microbiology, was conducted as part of the Microbiome Utrecht Infant Study (MUIS), a healthy infant birth cohort study that’s been running for 6 years.

In their study, the authors explained how the respiratory tract is “populated by a specialized microbial ecosystem, which is seeded during and directly following birth,” adding that, “despite recognition of many host and environmental factors known to modulate RTI susceptibility, the mechanism by which a child develops recurrent or severe RTIs, while others remain healthy, remains largely unknown”.

Researchers from the University of Edinburgh and University Medical Centre Utrecht (the Netherlands) examined nasal mucosa samples of 114 babies at various times from birth until 12 months of age. They then analyzed the gene activity of the babies’ nasal mucosa, the microbes present in the lining of the nose, and any viruses that infected the children.
 

Interferon-related mucosal gene activity

The researchers described how the microbiome – the community of microbes in the body – of a newborn baby can be influenced by many things, including delivery method, breastfeeding, antibiotics and the hospital environment. They highlighted how viruses were found to interact with a newborn’s immune system and microbiome in a way that affected both a child’s risk, and number, of subsequent infections.

They explained how when a viral infection was detected in the first days after birth, which they said largely occurred asymptomatically, specific mucosal genes were activated – genes involved with interferons – coinciding with a change in the composition of the microbiome, promoting the growth of potentially harmful microbes.

“The interferon-related gene activity caused by an early first viral infection is thought to create a proinflammatory environment that makes babies susceptible to future infections,” they said, adding that in their study they have demonstrated that “first asymptomatic viral encounters were associated with increased interferon signaling, and preceded the development of disadvantageous respiratory microbiota profiles and clinical RTIs”.
 

Proinflammatory and microbiologically perturbed environment

Debby Bogaert, PhD, chair of paediatric medicine at the University of Edinburgh, said: “We were surprised to see viral infections occur so early in life, and go mostly unnoticed, probably because the infant’s immune system is in what is known as a state of tolerance after birth. Despite this, these infections seem to affect a normal immune development, which is important to know.”

The authors wrote that their data supports the hypothesis that first viral encounters trigger an interferon-associated proinflammatory environment, which then further drives airway inflammation and symptomatology in a “self-enforcing positive feedback loop”. They said that this “proinflammatory and microbiologically perturbed environment in turn renders an individual more vulnerable to recurrent viral-induced RTIs”.

Wouter de Steenhuijsen, PhD, postdoctoral investigator at University Medical Centre Utrecht, said: “Although further work will be needed to confirm the causality of our findings, the data from this study indicate that early-life encounters with respiratory viruses – especially during the first days of life – may set the tone for subsequent non-beneficial host-microbe interactions, which are related to an infection risk and possibly long term respiratory health.”

Dr. Bogaert added: “Only from birth onwards will an infant start to develop its microbiome. Limiting the number of viral encounters in those first days to weeks of life might be essential for a healthy immune and microbiome development, and consequently long term respiratory health.”

A version of this article first appeared on Medscape UK.

Hospitalized intensive care patients with respiratory syncytial virus were significantly more likely to be immunocompromised and to have chronic respiratory conditions than those with influenza infections, but in-hospital mortality rates were similar, based on data from 618 adults.

Respiratory syncytial virus is common in adults, but characteristics of RSV patients requiring ICU care have not been explored, despite routine testing for RSV in critically ill patients in many institutions, Julien Coussement, PhD, of Université Libre de Bruxelles, Brussels, and colleagues wrote.

“Influenza is another respiratory virus routinely tested for in ICU patients with respiratory symptoms because of its well-known morbidity and mortality, but there are no data specifically comparing RSV and influenza infections in adult ICU patients,” they noted.

In a retrospective, multicenter study published in the journal CHEST, the researchers analyzed data from 309 adult ICU patients with RSV infection and 309 with influenza infection between November 2011 and April 2018 from 17 sites in France and Belgium. Each RSV patient was matched to a flu patient according to institution and date of diagnosis.

The primary objective was a comparison of in-hospital mortality between the groups, defined as death from any cause during an index hospital stay in acute care. Secondary objectives were comparisons of the clinical and biological characteristics of patients with RSV versus flu.

Overall, in-hospital mortality was not significantly different between the RSV and influenza groups (23.9% vs. 25.6%, P = .63).

However, patients with RSV infection were significantly more likely than those with flu to have an underlying chronic respiratory condition (60.2% vs. 40.1%, P < .001) and to be immunocompromised (35% vs. 26.2%, P = .02). Very few of the patients overall (39 patients, 6.3%) were considered young and healthy prior to hospitalization; and significantly fewer of these were in the RSV group than in the influenza group (9 patients and 30 patients, respectively).

Airway obstruction at the time of diagnosis was significantly more common in the RSV patients than in influenza patients (49.5% vs. 39.5%, P = .01), but influenza patients were significantly more likely to have acute respiratory distress syndrome at the time of diagnosis (21.7% vs. 14.6%, P = .02). Rates of coinfections were similar between the groups, and approximately 60% of coinfected patients received at least 72 hours of therapeutic antibiotics. Overall length of hospital stay, ICU stay, and duration of mechanical ventilation were similar between the groups.

The results show that severe RSV occurs mainly in older patients with comorbidities, and these results reflect data from previous studies, the researchers wrote in their discussion. In addition, “patients with influenza infection were significantly more likely to have fever, myalgia, increased CPK level, thrombocytopenia and transaminitis at diagnosis than were those with RSV infection. Whether these differences may be used to guide patient management remains to be determined.”

The study findings were limited by several factors including the retrospective design, and testing for respiratory viruses on symptomatic patients only, rather than all ICU patients, the researchers noted. Other limitations include the inability to show a causal link between viral infections and patient outcomes and the heterogenous management of patients among different centers.

However, the results were strengthened by the large sample size and multivariate analysis, and support the need for interventions to prevent and treat severe RSV, they concluded.

The study received no outside funding. Lead author Dr. Coussement disclosed serving on advisory board for Sanofi.

Hospitalized intensive care patients with respiratory syncytial virus were significantly more likely to be immunocompromised and to have chronic respiratory conditions than those with influenza infections, but in-hospital mortality rates were similar, based on data from 618 adults.

Respiratory syncytial virus is common in adults, but characteristics of RSV patients requiring ICU care have not been explored, despite routine testing for RSV in critically ill patients in many institutions, Julien Coussement, PhD, of Université Libre de Bruxelles, Brussels, and colleagues wrote.

“Influenza is another respiratory virus routinely tested for in ICU patients with respiratory symptoms because of its well-known morbidity and mortality, but there are no data specifically comparing RSV and influenza infections in adult ICU patients,” they noted.

In a retrospective, multicenter study published in the journal CHEST, the researchers analyzed data from 309 adult ICU patients with RSV infection and 309 with influenza infection between November 2011 and April 2018 from 17 sites in France and Belgium. Each RSV patient was matched to a flu patient according to institution and date of diagnosis.

The primary objective was a comparison of in-hospital mortality between the groups, defined as death from any cause during an index hospital stay in acute care. Secondary objectives were comparisons of the clinical and biological characteristics of patients with RSV versus flu.

Overall, in-hospital mortality was not significantly different between the RSV and influenza groups (23.9% vs. 25.6%, P = .63).

However, patients with RSV infection were significantly more likely than those with flu to have an underlying chronic respiratory condition (60.2% vs. 40.1%, P < .001) and to be immunocompromised (35% vs. 26.2%, P = .02). Very few of the patients overall (39 patients, 6.3%) were considered young and healthy prior to hospitalization; and significantly fewer of these were in the RSV group than in the influenza group (9 patients and 30 patients, respectively).

Airway obstruction at the time of diagnosis was significantly more common in the RSV patients than in influenza patients (49.5% vs. 39.5%, P = .01), but influenza patients were significantly more likely to have acute respiratory distress syndrome at the time of diagnosis (21.7% vs. 14.6%, P = .02). Rates of coinfections were similar between the groups, and approximately 60% of coinfected patients received at least 72 hours of therapeutic antibiotics. Overall length of hospital stay, ICU stay, and duration of mechanical ventilation were similar between the groups.

The results show that severe RSV occurs mainly in older patients with comorbidities, and these results reflect data from previous studies, the researchers wrote in their discussion. In addition, “patients with influenza infection were significantly more likely to have fever, myalgia, increased CPK level, thrombocytopenia and transaminitis at diagnosis than were those with RSV infection. Whether these differences may be used to guide patient management remains to be determined.”

The study findings were limited by several factors including the retrospective design, and testing for respiratory viruses on symptomatic patients only, rather than all ICU patients, the researchers noted. Other limitations include the inability to show a causal link between viral infections and patient outcomes and the heterogenous management of patients among different centers.

However, the results were strengthened by the large sample size and multivariate analysis, and support the need for interventions to prevent and treat severe RSV, they concluded.

The study received no outside funding. Lead author Dr. Coussement disclosed serving on advisory board for Sanofi.

Hospitalized intensive care patients with respiratory syncytial virus were significantly more likely to be immunocompromised and to have chronic respiratory conditions than those with influenza infections, but in-hospital mortality rates were similar, based on data from 618 adults.

Respiratory syncytial virus is common in adults, but characteristics of RSV patients requiring ICU care have not been explored, despite routine testing for RSV in critically ill patients in many institutions, Julien Coussement, PhD, of Université Libre de Bruxelles, Brussels, and colleagues wrote.

“Influenza is another respiratory virus routinely tested for in ICU patients with respiratory symptoms because of its well-known morbidity and mortality, but there are no data specifically comparing RSV and influenza infections in adult ICU patients,” they noted.

In a retrospective, multicenter study published in the journal CHEST, the researchers analyzed data from 309 adult ICU patients with RSV infection and 309 with influenza infection between November 2011 and April 2018 from 17 sites in France and Belgium. Each RSV patient was matched to a flu patient according to institution and date of diagnosis.

The primary objective was a comparison of in-hospital mortality between the groups, defined as death from any cause during an index hospital stay in acute care. Secondary objectives were comparisons of the clinical and biological characteristics of patients with RSV versus flu.

Overall, in-hospital mortality was not significantly different between the RSV and influenza groups (23.9% vs. 25.6%, P = .63).

However, patients with RSV infection were significantly more likely than those with flu to have an underlying chronic respiratory condition (60.2% vs. 40.1%, P < .001) and to be immunocompromised (35% vs. 26.2%, P = .02). Very few of the patients overall (39 patients, 6.3%) were considered young and healthy prior to hospitalization; and significantly fewer of these were in the RSV group than in the influenza group (9 patients and 30 patients, respectively).

Airway obstruction at the time of diagnosis was significantly more common in the RSV patients than in influenza patients (49.5% vs. 39.5%, P = .01), but influenza patients were significantly more likely to have acute respiratory distress syndrome at the time of diagnosis (21.7% vs. 14.6%, P = .02). Rates of coinfections were similar between the groups, and approximately 60% of coinfected patients received at least 72 hours of therapeutic antibiotics. Overall length of hospital stay, ICU stay, and duration of mechanical ventilation were similar between the groups.

The results show that severe RSV occurs mainly in older patients with comorbidities, and these results reflect data from previous studies, the researchers wrote in their discussion. In addition, “patients with influenza infection were significantly more likely to have fever, myalgia, increased CPK level, thrombocytopenia and transaminitis at diagnosis than were those with RSV infection. Whether these differences may be used to guide patient management remains to be determined.”

The study findings were limited by several factors including the retrospective design, and testing for respiratory viruses on symptomatic patients only, rather than all ICU patients, the researchers noted. Other limitations include the inability to show a causal link between viral infections and patient outcomes and the heterogenous management of patients among different centers.

However, the results were strengthened by the large sample size and multivariate analysis, and support the need for interventions to prevent and treat severe RSV, they concluded.

The study received no outside funding. Lead author Dr. Coussement disclosed serving on advisory board for Sanofi.