A large outbreak of COVID-19 linked to an end of term trip to Menorca (Spain) by secondary school students in summer 2021

Lluís Forcadell-Díez, Cristina Rius, Raúl Salobral, Nacho Sánchez-Valdivia, Jacobo Mendioroz, Pere Godoy, Elisabet Badiella Jarque, David Ferrandiz-Mont, Daniel Moreno Cervera, Berta Jordan Suriñach, Alba Vilalta-Carrera, Víctor Guadalupe-Fernández, Julia Mateo Basilio, Sergi Farràs Tapiol and Gloria Pérez

PLOS ONE, 2023, vol. 18, issue 2, 1-16

Abstract: Background: An outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) occurred in young people from Catalonia (Spain) who travelled to Menorca (Spain) in summer 2021. This outbreak appeared when governments relaxed Covid-19 preventive measures: the mask usage and the opening of nightlife. It was related to a super-disseminating mass event: Sant Joan festivities in Ciutadella. The aim of this article is to describe an outbreak of COVID-19 in young people aged 17–19 years from Catalonia travelling to Menorca. Methods: This is an observational study of a COVID-19 outbreak. The study population comprised Catalonian youth aged 17–19 years who travelled to Menorca from 15 June to 10 July. Epidemiological descriptive indicators were obtained. Descriptive and geographical statistics were carried out. Bivariate Moran’s I test was used to identify spatial autocorrelation between the place of residence and deprivation. The outbreak control method was based on identifying and stopping chains of transmission by implementing the test-trace-isolate-quarantine (TTIQ) strategy. Results: We identified 515 confirmed cases infected in Menorca, 296 (57.5%) in girls and 219 (42.5%) in boys, with a total of 2,280 close contacts. Of them, 245 (10.7%) were confirmed as cases. The cases were diagnosed between 15 June and 10 July. None of the persons with confirmed infection died or required hospitalisation. The attack rate was 27.2%. There was an inverse relationship between deprivation and number of confirmed cases (p

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0280614

DOI: 10.1371/journal.pone.0280614

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