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Published on: November 10, 2023
Respiratory Coinfections in Children With SARS-CoV-2
Adrianna Westbrook1, Tingyu Wang1, Kushmita Bhakta2,3
1From the Pediatric Biostatistics Core, Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia.
Insights
Respiratory coinfections are common in children with SARS-CoV-2, especially in those under two years old. The likelihood of coinfection decreases with age in pediatric patients with COVID-19.
Area of Science:
- Pediatric Infectious Diseases
- Epidemiology of Respiratory Illnesses
- Viral Coinfections in Children
Background:
- Resurgence of endemic respiratory pathogens necessitates understanding coinfections in pediatric SARS-CoV-2 cases.
- Epidemiological data on coinfections in children with COVID-19 is crucial as respiratory pathogen transmission returns to pre-pandemic levels.
Purpose of the Study:
- To determine the proportion of pediatric patients with SARS-CoV-2 who experienced respiratory coinfections.
- To identify common coinfecting pathogens and analyze the association between coinfection and patient age.
Main Methods:
- Retrospective analysis of pediatric patients (0-21 years) tested for respiratory pathogens using BioFire Respiratory Panel 2.1.
- Poisson regression analysis to assess the likelihood of coinfection and its correlation with age.
Main Results:
- Over 7.6% of respiratory panel tests were positive for SARS-CoV-2, with 23.7% of these cases having coinfections.
- Rhino/enterovirus was the most frequent coinfection (15.7%), followed by adenovirus (4.2%) and RSV (3.5%).
- Children under 2 years old exhibited the highest coinfection rates; coinfection risk decreased by 8% for each year increase in age.
Conclusions:
- Respiratory coinfections are prevalent in pediatric SARS-CoV-2 patients.
- Coinfection likelihood is influenced by pathogen type, host factors, and the time period, including viral variant predominance and transmission seasons.
Background:
As the transmission of endemic respiratory pathogens returns to prepandemic levels, understanding the epidemiology of respiratory coinfections in children with SARS-CoV-2 is of increasing importance.
Methods:
We performed a retrospective analysis of all pediatric patients 0-21 years of age who had a multiplexed BioFire Respiratory Panel 2.1 test performed at Children's Healthcare of Atlanta, Georgia, from January 1 to December 31, 2021. We determined the proportion of patients with and without SARS-CoV-2 who had respiratory coinfections and performed Poisson regression to determine the likelihood of coinfection and its association with patient age.
Results:
Of 19,199 respiratory panel tests performed, 1466 (7.64%) were positive for SARS-CoV-2, of which 348 (23.74%) also had coinfection with another pathogen. The most common coinfection was rhino/enterovirus (n = 230, 15.69%), followed by adenovirus (n = 62, 4.23%), and RSV (n = 45, 3.507%). Coinfections with SARS-CoV-2 were most commonly observed in the era of Delta (B.1.617.2) predominance (190, 54.60%), which coincided with periods of peak rhino/enterovirus and RSV transmission. Although coinfections were common among all respiratory pathogens, they were significantly less common with SARS-CoV-2 than other pathogens, with exception of influenza A and B. Children <2 years of age had the highest frequency of coinfection and of detection of any pathogen, including SARS-CoV-2. Among children with SARS-CoV-2, for every 1-year increase in age, the rate of coinfections decreased by 8% (95% CI, 6-9).
Conclusions:
Respiratory coinfections were common in children with SARS-CoV-2. Factors associated with the specific pathogen, host, and time period influenced the likelihood of coinfection.
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