RT info:eu-repo/semantics/article T1 Variation in the seasonality of the respiratory syncytial virus during the COVID-19 pandemic A1 Bermúdez Barrezueta, Lorena Concepción A1 Matías del Pozo, Vanesa A1 López Casillas, Pablo A1 Brezmes Raposo, Marta A1 Gutiérrez Zamorano, María A1 Pino Vázquez, María de la Asunción K1 Bronchiolitis K1 COVID-19 K1 Pandemic K1 Respiratory syncytial virus K1 Epidemiology K1 32 Ciencias Médicas AB BackgroundThe COVID-19 pandemic has caused a variation in the circulation of common respiratory viruses. Our objective was to analyse the epidemiology of respiratory syncytial virus (RSV) bronchiolitis admissions during the COVID-19 pandemic in comparison with previous epidemic seasons.MethodsWe conducted an observational study involving infants with RSV bronchiolitis admitted to a tertiary hospital during two periods: pandemic COVID-19 (15 March 2020–30 September 2021) and pre-pandemic (1 October 2014–14 March 2020). Demographic and clinical characteristics were collected.ResultsA total of 270 patients were admitted for RSV bronchiolitis: 253 in the pre-pandemic period with an average of 42 admissions per season vs 17 in the pandemic. During the pandemic, the RSV outbreak started late in June 2021 with a higher percentage of prematurity and PICU admissions.ConclusionA change in RSV seasonality was observed during the COVID-19 pandemic, with an unusual outbreak in summer 2021 of lower magnitude than previous seasons. PB Springer SN 0300-8126 YR 2022 FD 2022 LK https://uvadoc.uva.es/handle/10324/52830 UL https://uvadoc.uva.es/handle/10324/52830 LA eng NO Infection, 2022. NO Producción Científica DS UVaDOC RD 27-abr-2024