They also controlled for ethnicity, as blood group distributions differ among ethnic groups, and maintained that fewer people with blood type O tested positive for Covid-19. The first study carried out in Denmark on 473,654 people who were tested for Covid-19 between February and July found that only 7,422 tests with blood type O were positive.
They did, however, find that only 61 percent of the patients with Type O or B blood required a ventilator, compared to 84 percent of patients with Type A or AB.
The second study examined data from 95 critically ill people who were hospitalized with Covid-19 in Vancouver, Canada.
As per two independent researches conducted, it was revealed that people with the blood group O are less vulnerable to the deadly virus, whereas the blood groups A and AB are most at risk.
The research papers added evidence that there may be a connection between blood type and susceptibility to COVID-19 but the researchers stated that more studies need to be done to better understand why and what it means for patients.
Blood type, the researchers found, stood out as a potential key difference between the two groups.
Also, people with type A and AB did not require a longer duration of hospitalisation but did remain in the intensive care unit (ICU) for longer on average, compared to people with types O or B, indicating a more severe form of COVID-19.
These new findings echo similar findings about Type O blood seen in previous research, creating a clearer picture of one particular coronavirus risk factor.
Interestingly, blood groups, A and AB were also associated with complications post-hospitalization, such as myocarditis, lung injury and renal damage.
These were the details of the news People with blood type O, who are less at risk of. for this day. People with O-blood are also capable of donating red blood cells to any other type.
That said, it is known that blood type can influence how your immune system fights against infections in general.
There are important caveats to consider from the new research. First and foremost, both of these studies only found a correlation with no indication of a causal link.
Your blood type may predict how severely you'd be affected by Covid-19, should you catch infection.
"If one is blood group A, you don't need to start panicking".