- Two new studies published this week suggest that your risk of becoming infected with the new coronavirus could be linked to your blood type.
- One study showed those with type O blood were less likely to contract COVID-19, while the other showed those with type O blood didn’t get as sick.
- More research is needed, and while blood type can affect the likelihood of COVID-19 infection and serious illness, it’s not enough to change someone’s behavior.
We’ve learned a lot about the novel coronavirus since the start of the pandemic seven months ago, but there are still countless mysteries left unsolved. Dozens of studies have been published on a weekly basis with valid theories on how contagious the virus is, who is most likely to be infected, how dangerous the virus can be for certain types of people, and so on. At first, many of these studies indicated that your blood type could affect the severity of the disease, and this week two more studies confirmed that claim.
Such as CNN reports, two studies published Wednesday suggest that people with type O blood are less likely to contract COVID-1
The first study, from Denmark, looked at data of 473,654 who were tested for COVID-19 from February to July. 7,422 of these tests were positive and of these individuals, 38% had type O blood and 44% had type A blood. In a much larger sample of more than 2.2 million people in Denmark than not. were tested for the virus, 42% had type O blood and 42% had type A blood. These results seem to indicate that although individuals with type O and type A blood are equally divided among the general population , type O is less vulnerable to the virus.
Another study, which looked at 95 critically ill COVID-19 patients hospitalized in Canada, reached similar conclusions. The researchers found that of those 95 sick patients, 84% with type A or type AB blood ended up needing mechanical ventilation, compared with 61% of those with type O or type B blood.
“As a doctor … it’s in the back of my mind when I look at patients and stratify them,” said Dr. Mypinder S. Sekhon, an intensive care physician at Vancouver General Hospital and author of the Canadian study. CNN. “But in terms of a definitive indicator, we need repeated results in many jurisdictions that demonstrate the same thing. I don’t think this replaces other severity risk factors like age, comorbidities, and so on. If one is of blood type A, then there is no need for you to start panicking. And if you are of blood type O, you are not free to go to pubs and bars. “
The two important things here are that much more data is needed before any firm conclusions can be drawn from this research and that even though ABO blood type plays a role in the virus’s ability to infect someone or cause them serious harm, it’s still not a difference enough to influence pandemic best practices for anyone.