Risk of SARS-CoV-2 infection before and after the Omicron wave in a cohort of healthcare workers in Ontario, Canada
During the Omicron wave, community and household exposures, but not occupational exposure to COVID-19 cases, were the primary factors contributing to infection risk in HCWs. This contrasts with the early waves of the pandemic where occupational exposures played a significant role. These findings may be explained by the effectiveness of institutional interventions in reducing the risk of SARS-CoV-2 transmission in healthcare settings, alongside the failure of community-level interventions to mitigate risk during the Omicron period.
Authors
- Santiago Pérez-Patrigeón (ORCID: https://orcid.org/0000-0002-5912-453X)
- Jorge Martínez-Cajas (ORCID: https://orcid.org/0000-0003-2847-7823)
- Yanping Gong (ORCID: https://orcid.org/0000-0002-0233-9353)
- Bradley P. Stoner (ORCID: https://orcid.org/0000-0003-4713-5271)
- Beatriz Alvarado (ORCID: https://orcid.org/0000-0002-1269-405X)
- Gerald E. Evans
- Ann Jolly (ORCID: https://orcid.org/0000-0002-7453-6217)
- T. Hugh Guan (ORCID: https://orcid.org/0000-0001-6744-910X)
Institutions
- Queen's University (CA)
- Ottawa Public Health (CA)
- Kingston Health Sciences Centre (CA)
Publication Details
- Journal
- BMC Infectious Diseases
- Published
- 2025-02-07
- DOI
- https://doi.org/10.1186/s12879-025-10580-8
- Citations
- 3
- Primary Topic
- Infection Control and Ventilation
- Type
- article
- Field-Weighted Citation Impact
- 4.56
Funders
- Physicians' Services Incorporated Foundation