But in terms of a definitive marker we need repeated findings across many jurisdictions that show the same thing,” said Dr. “As a clinician … it is at the back of my mind when I look at patients and stratify them. The Canadian study also found those with blood type A or AB had a longer stay in the intensive care unit, a median of 13.5 days, compared with those with blood group O or B, who had a median of nine days. Why do we have different blood types - and do they make us more vulnerable to Covid-19? In the other study, researchers in Canada found that among 95 patients critically ill with Covid-19, a higher proportion with blood type A or AB – 84% – required mechanical ventilation compared with patients with blood group O or B, which was 61%. The reasons for this link aren’t clear and more research is needed to say what implications, if any, it has for patients.Ī Danish study found that among 7,422 people who tested positive for Covid-19, only 38.4% were blood type O – even though, among a group of 2.2 million people who were not tested, that blood type made up 41.7% of the population.īy contrast, 44.4% of group A tested positive, while in the wider Danish population that blood type makes up 42.4%. 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.

People with blood type O may be less vulnerable to Covid-19 and have a reduced likelihood of getting severely ill, according to two studies published Wednesday.

Celebrities with blood type o negative