Blood group O protects better against coronavirus (Danish study)

People with blood group 0 contract the coronavirus less often than people with groups A, B and AB, according to the results of a Danish study revealed on Wednesday.

The results of this study, published in the scientific journal Blood Advances, are based on information from the registry of the 2.7 million Danes whose blood type has been determined in the Danish healthcare system.

The study, carried out by researchers from Danish blood banks, the University of Aarhus and the University of Southern Denmark, showed that the risk of coronavirus infection for people in group O is exactly 13% inferior than their fellows in other groups.

Exciting results

This means that if screening for coronavirus among people with blood group A, B or AB finds 100 infected, that number among blood group 0 stands at 87.

“These are really exciting results that show that something is going on between the virus and our blood type. We have to become much wiser about this, ”said Aarhus University Hospital Chief Medical Officer Lars Østergaard.

According to him, the study will “decide who should be vaccinated first, if we have a shortage of vaccines in the country.”

As researchers attempt to find out why blood group 0 protects better against coronavirus, this knowledge has the potential to be used in the treatment of patients with covid-19.

“We do not yet know the explanation, but we know from other infectious diseases that there may be a link between the blood group and the infection”, explains the professor of the Odense University Hospital , Torben Barington, who led the research group behind the study.

Although people with a certain blood group are less exposed to the coronavirus, it’s important to remember that anyone can still be infected with the virus, the researchers point out.

“The difference is so small that anyone can still catch coronavirus, and therefore everyone should always follow the recommendations and advice of authorities regardless of their blood type,” said Barington.


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