SARS-CoV-2 outbreaks in long-term care facilities during the Omicron era in Québec, Canada.

SARS-CoV-2 outbreaks in long-term care facilities during the Omicron era in Québec, Canada.

Publication date: Dec 23, 2025

Residents of long-term care facilities (LTCFs) are at a high risk of severe COVID-19. Our study analyzed the COVID-19 outbreaks, associated cases and case fatality ratio (CFR) in LTCFs from May-2022 to September-2024 in QucE9bec, Canada. An ecological analysis was conducted including all active LTCFs during the study period (n = 471). Regression analyses using generalized estimating equations were used to model odds of an active COVID-19 outbreak, confirmed COVID-19 cases incidence rate ratio (IRR) and ratio of CFR over different periods (wave 7, 2022-23 season, 2023-24 season), regions and LTCF bed capacity. A total of 2,501 outbreaks were recorded, corresponding to 39,089 COVID-19 cases (among residents and health care workers). The odds of an active outbreak, IRR of COVID-19 cases, and ratio of CFR declined significantly during the 2023-24 season compared to wave 7 (-35%, -39% and -24%, respectively; p-values 

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Concepts Keywords
Canada Canada
Covid COVID-19
Fatality Nursing home
Outbreak

Semantics

Type Source Name
disease MESH COVID-19
disease MESH bed
disease MESH Long Covid
pathway REACTOME Reproduction
disease MESH included
drug DRUGBANK Diethylstilbestrol
disease MESH des
disease MESH Infection

Original Article

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