ArticleBMJ public health2024
Characterising COVID-19 school and childcare outbreaks in Canada in 2021: a surveillance study.
Article in BMJ public health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Seasonal trends and molecular evolution of SARS-CoV-2 in acute respiratory illness patients during the fifth year of COVID-19, Thailand.Scientific reports · 2025Article
- Risk factors associated with the intensity of COVID-19 outbreaks in Canadian community settings: a retrospective analysis of outbreak-level surveillance data.BMC public health · 2024Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: In January 2021, the Public Health Agency of Canada launched the Canadian COVID-19 Outbreak Surveillance System to monitor outbreaks by setting. Schools and childcare centres were identified as settings of interest, as children play a key role in the transmission chain of other respiratory illnesses. This paper describes outbreak trends observed in school and childcare settings from January to December 2021 when many public health measures were in place. Methods: School and childcare outbreak data from five jurisdictions were included, representing 76% of the total Canadian population. Epidemiological curves were generated, trends in outbreak settings and cases' age distribution over time were examined and descriptive statistics on outbreak size were calculated. Results: In 2021, most school and childcare outbreaks were in primary schools (42%). Severity was low in school and childcare settings (0.40% of outbreak cases hospitalised, <0.01% of outbreak cases deceased). Most school and childcare outbreaks reported fewer than 10 cases per outbreak. During the start of the 2021-2022 school year (September 2021), there were fewer outbreaks in secondary schools and fewer cases among those aged 12+ years compared with January-June of 2021. Conclusion: During the study period, there was no observed association between an increase in school and childcare outbreaks and an increase in incidence rates in community case data. Children remain a population of interest for SARS-CoV-2; however, severity in paediatric populations remained low throughout 2021 and the risk of transmission in Canadian schools was low.
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