COVID-19 Pandemic-Related Reductions in Pediatric Asthma Exacerbations Corresponded with an Overall Decrease in...

Area of Science:

• Pediatric Asthma Research
• Epidemiology of Respiratory Illnesses
• Environmental Health and Asthma

Background:

• Pediatric asthma exacerbations are influenced by respiratory viruses, air pollutants, and aeroallergens, but their relative impact is unclear.
• The coronavirus disease 2019 (COVID-19) pandemic saw a notable reduction in asthma exacerbations, offering a unique opportunity to study trigger associations.
• Understanding these triggers is crucial for managing childhood asthma effectively.

Purpose of the Study:

• To investigate the association between changes in respiratory viruses, air pollutants, and aeroallergens during the COVID-19 pandemic and the decrease in pediatric asthma exacerbations.
• To differentiate the contributions of various environmental and infectious triggers to asthma activity.

Main Methods:

• Extracted health care utilization and viral testing data (2015-2020) from an electronic health record system.
• Collected air pollution data from EPA databases and aeroallergen data from a National Allergy Bureau station.
• Compared pandemic-era data (2020) with historical data to assess changes in triggers and asthma activity.

Main Results:

• Asthma exacerbations decreased during the pandemic, with uneven recovery of in-person encounters.
• Influenza A and B viral infections became negligible, while respiratory syncytial virus and rhinovirus decreased but remained present.
• No significant changes were observed in air pollution or aeroallergen levels compared to historical data.

Conclusions:

• Viral respiratory infections appear to be the primary driver of pediatric asthma exacerbations.
• These findings underscore the importance of viral infections in asthma management and public health policy.
• Targeting viral triggers could significantly reduce childhood asthma morbidity.