April 5, 2022, Vol 327, No. 13, Pages 1209-1300
Estimates of SARS-CoV-2 Omicron Variant Severity in Ontario, Canada
Ana Cecilia Ulloa, MPH; Sarah A. Buchan, PhD; Nick Daneman, MD, MSc; et al.
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JAMA. 2022;327(13):1286-1288. doi:10.1001/jama.2022.2274
This study examines hospitalizations and deaths associated with the SARS-CoV-2 Omicron variant compared with matched patients infected with the Delta variant.