1. Transmission of SARS-CoV-2 infection among children in summer schools applying stringent control measures in Barcelona, Spain
- Author
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Jordán-García I, Fernández de Sevilla-Estrach M, Fumadó Victoria, Bassat Q, Bonet-Carne E, Fortuny-Guasch C, Garcia-Miquel A, Jou-Munoz C, Adroher C, Casas MM, Girona M, Garcia MH, Tomas GP, Ajanovic S, Arias S, Balanza N, Baro B, Millat-Martinez P, Varo R, Alonso S, Álvarez-Lacalle E, López D, Claverol J, Cubells M, Brotons-de los Reyes P, Codina-Bergadà A, Cuadras-Palleja D, Bruijning-Verhagen P, Faust S, Munro A, Munoz-Almagro C, Català M, Prats C, García-García JJ, and Gratacós E
- Subjects
children ,SARS-CoV-2 ,transmission ,COVID-19 - Abstract
BACKGROUND: Understanding the role of children in SARS-CoV-2 transmission is critical to guide decision-making for schools in the pandemic. We aimed to describe the transmission of SARS-CoV-2 among children and adult staff in summer schools. METHODS: During July 2020 we prospectively recruited children and adult staff attending summer schools in Barcelona who had SARS-CoV-2 infection. Primary SARS-CoV-2 infections were identified through: (1) surveillance program in 22 summer schools' of 1905 participants, involving weekly saliva sampling for SARS-CoV-2 RT-PCR during 2-5 weeks; (2)cases identified through the Catalonian Health Surveillance System of children diagnosed with SARS-CoV-2 infection by nasopharyngeal RT-PCR. All centres followed prevention protocols: bubble groups, hand washing, facemasks and conducting activities mostly outdoors. Contacts of a primary case within the same bubble were evaluated by nasopharyngeal RT-PCR. Secondary attack rates and effective reproduction number in summer schools(R*) were calculated. RESULTS: Among the over 2000 repeatedly screened participants, 30children and 9adults were identified as primary cases. A total of 253 close contacts of these primary cases were studied (median 9 (IQR 5-10) for each primary case), among which twelve new cases (4.7%) were positive for SARS-CoV-2. The R* was 0.3, whereas the contemporary rate in the general population from the same areas in Barcelona was 1.9. CONCLUSIONS: The transmission rate of SARS-CoV-2 infection among children attending school-like facilities under strict prevention measures was lower than that reported for the general population. This suggests that under preventive measures schools are unlikely amplifiers of SARS-CoV-2 transmission and supports current recommendations for school opening.
- Published
- 2021