Population-based study on hospital admissions for pediatric status asthmaticus: from before to after the COVID-19 pandemic.

Objectives: The increase in respiratory infections post-COVID-19 pandemic, attributed to relaxed masking and social distancing, has raised concerns about a new pattern of severe asthma exacerbations in children. We compare admission rates, severity, and risk factors of status asthmaticus in children with reference to the past 3 years before, during, and after the COVID-19 pandemic. Study design: This is a population-based cross-sectional analysis. Admission records were retrieved from the Clinical Data Analysis and Reporting System of the Hospital Authority in Hong Kong. Patients aged 2 to <18 years admitted for status asthmaticus between January 2017 and March 2024 were included. Main results: The incidence rate of pediatric status asthmaticus increased after the COVID-19 period compared to before COVID-19 (5.7-7.3 per 100,000 children aged 2 to <18 years), with a higher increase in children aged 2 to <6 years (10.1-20.6 per 100,000 children aged 2 to <18 years). There was a higher percentage of status asthmaticus admissions among total pediatric asthma admissions after COVID-19 (0.83% vs. 2.87%, Conclusions: Status asthmaticus increased after the COVID-19 pandemic, particularly in preschoolers. Public health measures during the pandemic may have prevented the children's immune systems from being educated with infection.