Type O blood linked to lower risk, taking Vitamin D unlikely to help

The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19, the illness caused by the virus. Certain blood groups less likely to get COVID-19 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 those with A, AB, or B, researchers reported on Tuesday in Annals of Internal Medicine. People in any blood group who were Rh-negative were...