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A person with blood type O may have a reduced risk of contracting coronavirus and even with the infection, a lower risk of severe symptoms, new studies have shown.
According to two studies published in “Blood Advances,” an online-only peer-reviewed open access journal of the American Society of Hematology (ASH), there is some evidence that there may be a link between blood type and vulnerability. to COVID-19.
The findings of the two studies are described below:
Fewer coronavirus patients with blood type O
A retrospective study of people tested for coronavirus showed that blood type O “may offer some protection against COVID-19 infection.”
When the researchers analyzed data from the Danish health registry of more than 473,000 people who took the COVID-19 test and compared it to a control group of more than 2.2. million people in the general population, found that Among COVID-positive patients, there were fewer with blood type O and more with blood types A, B, and AB.
This gives credence to the fact that people with blood types A, B, and AB may be at higher risk of infection than those with blood type O.
Among blood types A, B, and AB, no significant differences were found in infection rates.
Serious symptoms for people with blood groups A, AB
A separate retrospective study showed that blood groups A and AB “appear to exhibit a greater severity of COVID-19 disease than people with blood groups O or B.”
The researchers analyzed data from 95 critically ill and hospitalized COVID-19 patients in Vancouver, Canada. It was found that those with blood types A or AB “were more likely to require mechanical ventilation, suggesting that they had higher rates of lung injury of COVID-19 “.
It was also found that more patients with groups A and AB required dialysis for kidney failure.
What does this mean?
The two studies together show that Blood groups A and AB are at particular risk for organ failure due to COVID-19. compared to blood types O and B.
Also, people with type A and AB did not require a longer duration of hospitalization, but did staying in the intensive care unit (ICU) longer on average compared to people with types O or B, indicating a more severe form of COVID-19.
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