Sánchez-García, SilviaRuiz Hornillos, Francisco JavierBernaola, MartaHabernau-Menaf, AliciaLasa, Eva MaríaContreras, JavierCandón-Morillo, RocíoAntón Rodríguez, CristinaEscudero, Carmelo2023-02-032023-02-0320220301-0546https://hdl.handle.net/10641/3248Background: The novel disease caused by the new coronavirus SARS-CoV-2 has caused an unprecedented global pandemic. Care providers of asthmatic children are increasingly con-cerned; as viral infections are one of the primary triggers of asthma flare-up. However, the effect of SARS-CoV-2 as well as the generated worldwide lockdown on asthmatic children is unknown. Objective: The aim of this study was to analyze the effects of pandemic SARS-CoV-2 in pediat-ric asthma control. Material and Methods: A retrospective, open, transversal study was performed at five ter-tiary hospitals. Recruited patients were aged <18 years and had physician-diagnosed asthma. Information regarding the 2019 and 2020 seasons were provided. Results: Data were collected from 107 children (age range: 3–18 years, mean age: 12 years). Well-controlled asthma was observed in 58 (54.2%) patients in 2020 versus 30 (28%) in 2019, and 15 (14%) patients had poorly controlled asthma in 2020 versus 28 (26.2%) in 2019. In 2020, a decrease in exacerbations caused by allergies to pollen, dust mites, molds, and through other causes not related to SARS-CoV-2 infection was observed. An increase in exacerbations was observed due to animal dander, stress, physical exercise, and SARSCoV- 2 infectionengAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Asthma controlAsthma severityCOVID-19Pediatric asthmaSARS-CoV-2journal articleopen access10.15586/aei.v50i1.492