People with blood type O may be less vulnerable to Covid-19 & have a reduced likelihood of getting severely ill

Among 473,654 individuals who were tested for coronavirus, only 38.4% with blood type O tested positive, even though, among a group of 2.2 million individuals who were not tested, that blood type made up 41.7% of the population, according to a Danish study.

In another research, experts in Canada found that among 95 victims severely ill with coronavirus, a higher proportion with blood type A or AB, 84%, needed mechanical ventilation compared with victims with blood group O or B, which was 61%.

People with blood type A or AB had a longer stay in the ICU, an average of 13.5 days, compared with those with blood group O or B, who had an average of 9 days, according to the Canadian study.