The research provides further evidence that blood type (also known as blood group) may play a role in a person's susceptibility to infection and their chance of having a severe bout of the disease. By contrast, 44.4% of group A tested positive, while in the wider Danish population that blood type makes up 42.4%. Sekhon said it could be explained by people with blood type O having less of a key clotting factor making them less prone to coagulation problems in the blood. The same pattern has been emerging with O blood type tending to be the one that's standing out," Adalja said. For instance, research suggests that people with blood type O appear to be more susceptible to norovirus infection.

Source: CNN October 14, 2020 16:03 UTC