Delta variant has 235% higher risk of ICU admission than original virus

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A new Canadian study helps “build a picture” of the risks health experts associate with new variants of concern. Photo: Pexels


(Katharine Lang/ Medical News Today) — A Canadian study has found a link between the new variants of SARS-CoV-2, particularly the Delta variant, and an increased risk of severe disease and death.

The retrospective study, by the University of Toronto and appearing in the Canadian Medical Association Journal (CMAJ), looked at 212,326 cases in Ontario from February 7 to June 27, 2021. The study authors compared the risks of hospitalization, ICU admission, and death from the VOCs with those risks from non-VOC SARS-CoV-2 strains.

The researchers screened the cases for Alpha, Beta, Gamma, and Delta VOCs. Non-VOC infections made up 22.4% of the cases. More than three-quarters of the cases were Alpha, Beta, or Gamma, while 2.8% were probably Delta. (…)

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