Type O blood linked to lower COVID-19 risk, taking Vitamin D unlikely to help
A large study adds to evidence that people with type O or Rh−negative blood may be at slightly lower risk from the new coronavirus. Among 225,556 Canadians who were tested for the virus, the risk for a COVID-19 diagnosis was 12% lower and the risk for severe COVID-19 or death was 13% lower in people with blood group O versus ...
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