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- W4285391063 abstract "To determine the extent and characteristics of in-school transmission of SARS-CoV-2 and determine risk factors for in-school acquisition of COVID-19 in one of Canada's largest school districts.We conducted a retrospective chart review of all reportable cases of COVID-19 who attended a kindergarten-Grade 12 (K-12) school within the study area between January and June of the 2020-2021 school year. The acquisition source was inferred based on epidemiological data and, when available, whole genome sequencing results. Mixed effects logistic regression was performed to identify risk factors independently associated with in-school acquisition of COVID-19.Overall, 2877 cases of COVID-19 among staff and students were included in the analysis; of those, 9.1% had evidence of in-school acquisition. The median cluster size was two cases (interquartile range: 1). Risk factors for in-school acquisition included being male (adjusted odds ratio [aOR]: 1.59, 95% confidence interval [CI]: 1.17-2.17), being a staff member (aOR: 2.62, 95% CI: 1.64-4.21) and attending or working in an independent school (aOR: 2.28, 95% CI: 1.13-4.62).In-school acquisition of COVID-19 was uncommon during the study period. Risk factors were identified in order to support the implementation of mitigation strategies that can reduce transmission further.RéSUMé: OBJECTIFS: Déterminer l’étendue et les caractéristiques de la transmission de la SRAS-CoV-2 en milieu scolaire, et déterminer les facteurs de risque de l’acquisition de la COVID-19 dans l’un des plus larges arrondissements scolaires du Canada. MéTHODES: Nous avons mené un examen rétrospectif des dossiers de tous les cas signalés de COVID-19 ayant fréquenté une école de niveau élémentaire, primaire ou secondaire dans la zone à l’étude entre janvier et juin de l’année scolaire 2020-2021. La source d’acquisition était inférée sur la base des données épidémiologiques et, lorsque disponibles, les résultats de séquençage du génome entier. Nous avons eu recours à des régressions logistiques multiniveaux pour identifier les facteurs indépendamment associés avec l’acquisition de la COVID-19 en milieu scolaire. RéSULTATS: Au total, 2 877 cas de COVID-19 parmi les employés et les élèves ont été inclus dans l’analyse; de ceux-ci, 9,1 % avaient acquis l’infection en milieu scolaire. La grosseur médiane des agrégats était de deux cas (écart interquartile : 1). Les risques facteurs de l’acquisition en milieu scolaire incluaient le fait d’être de sexe masculin (rapport de cotes ajusté [RCa] : 1,59, intervalle de confiance [IC] de 95% : 1,17-2,17), être un membre du personnel (RCa : 2,62, IC de 95% : 1,64-4,21) et fréquenter ou travailler dans une école indépendante (RCa : 2,28, IC de 95% : 1,13-4,62). CONCLUSION: Nos résultats suggèrent que l’acquisition de la COVID-19 en milieu scolaire était peu commune pendant la période d’étude. Des facteurs de risque ont été identifiés afin de supporter l’implémentation de mesures de contrôle pouvant réduire davantage la transmission." @default.
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- W4285391063 date "2022-07-14" @default.
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- W4285391063 title "Transmission dynamics of SARS-CoV-2 in British Columbia’s largest school district during the second half of the 2020–2021 school year" @default.
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- W4285391063 doi "https://doi.org/10.17269/s41997-022-00659-z" @default.
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