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Risk of SARS-CoV-2 Among Ontario Healthcare Workers: A Comparison of Test-negative and Cohort Study Designs in a

Louis Everest1, Paul A Demers, Brendan T Smith

  • 1From the Occupational Cancer Research Centre, Ontario Health, Toronto, Ontario, Canada (L.E., P.A.D., M.A.H., C.S., T.L.K., J.S.); Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada (P.A.D., B.T.S., J.K., V.H.A., M.A.H., T.L.K., J.S.); Health Promotion, Chronic Disease and Injury Prevention, Public Health Ontario, Toronto, Ontario, Canada (B.T.S.); Environmental and Occupational Health, Public Health Ontario, Toronto, Ontario, Canada (J.K.); Department of Medicine, University of Toronto, Toronto, Ontario, Canada (J.K.); and School of Occupational and Public Health, Toronto Metropolitan University, Toronto, Ontario, Canada (M.A.H.).

Journal of Occupational and Environmental Medicine
|February 27, 2026
PubMed
Abstract

Keywords:
COVID-19SARS-CoV-2biashealthcare workersoccupational risktest-negative

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