Disruption and change in positivity of respiratory pathogen epidemiology in children during and after the COVID-19 pandemic, 2018–2023: a large-scale period-comparison study in Guangzhou, southern China
Background Non-pharmaceutical interventions (NPIs) during the COVID-19 pandemic disrupted respiratory pathogen transmission, but post-pandemic change in positivity patterns across pathogens, age groups, and co-infections remain incompletely characterized in children. Methods We conducted a retrospective period-comparis...