Association between two mass-gathering outdoor events and incidence of SARS-CoV-2 infections during the fifth wave of COVID-19 in north-east Spain : A population-based control-matched analysis
Suñer, Clara (Institut Germans Trias i Pujol. Fundació de Lluita Contra la Sida)
Coma, Ermengol (Institut Català de la Salut)
Ouchi, Dan (Institut Germans Trias i Pujol)
Hermosilla, Eduardo (Institut Universitari d'Investigació en Atenció Primària Jordi Gol)
Baro, Barbara (Hospital Clínic i Provincial de Barcelona)
Rodríguez-Arias, Miquel Àngel (Institut Germans Trias i Pujol)
Puig, Jordi (Institut Germans Trias i Pujol)
Clotet Sala, Bonaventura (Institut Germans Trias i Pujol. Institut de Recerca de la Sida IrsiCaixa)
Medina, Manuel (Institut Català de la Salut)
Mitjà, Oriol (Institut Germans Trias i Pujol)
Universitat Autònoma de Barcelona

Fecha:	2022
Resumen:	Many countries have resumed mass-gathering events like music festivals, despite the risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spreading. In this study, we aimed to assess the effect of two mass-gathering outdoor events, held during a peak of SARS-CoV-2 transmission, on COVID-19 incidence. This was a retrospective, population-based control-matched analysis. The study population included attendees to two outdoor music festivals held in Catalonia (North-East Spain). The primary objective was to compare the incidence of COVID-19 within the 3-to-10 days following the event between attendees and a population-based control group. The analysis included 18,275 and 27,347 attendees to the first and second festivals, respectively, and their corresponding controls. The post-festival 7-day cumulative COVID-19 incidence among attendees and controls was 4. 14% (95% CI 3. 86-4. 44) vs. 1. 69% (1. 51-1. 88) for the first festival (RR 2. 46; 2. 16-2. 80), and 2. 42% (2. 35-2. 61) and 1. 10% (0. 99-1. 2) for the second festival (RR 2. 19; 1. 92-2. 51). COVID-19 incidence among immunized individuals was also two-fold higher in attendees than in controls. Previous COVID-19 infection, vaccination, and adequate mask-wearing were significantly associated with a lower risk of COVID-19 infection after the events. Despite the proven effectiveness of preventive measures such as Ag-RDT screening, mask-wearing and vaccination, caution should be taken when holding these events during a period of high community SARS-CoV-2 transmission. Crowdfunding campaign YoMeCorono () and the Generalitat de Catalunya.
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Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Publicado en:	The Lancet Regional Health - Europe, Vol. 15 (february 2022) , ISSN 2666-7762

DOI: 10.1016/j.lanepe.2022.100337
PMID: 35237763

10 p, 383.7 KB

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Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias de la salud y biociencias > Institut d'Investigació en Ciencies de la Salut Germans Trias i Pujol (IGTP)
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