Two studies published this Wednesday in the journal ‘Blood Advances’ suggest that people with blood group 0 may have a lower risk of COVID-19 infection and a lower chance of serious outcomes, including organ complications, if they do get sick, while those in group A and AB may have an increased risk of serious clinical outcomes, informs the EuropaPress agency.
The biomedical research community worldwide is increasingly concerned with studying how the coronavirus affects the health of people and specifically, each group. The potential role of blood type in predicting the risk and complications of COVID-19 infection has emerged as an important scientific question.
There are more and more studies on how the coronavirus affects each ethnic group
The Spanish agency reports that these new studies add evidence that there may be an association between blood type and vulnerability to COVID-19, although additional research is needed to better understand why and what it means for patients, the authors explain.
Blood type 0 may offer some protection against COVID-19 infection, according to a retrospective study.
The researchers compared data from the Danish health registry of more than 473,000 people tested for COVID-19 with data from a control group of more than 2.2 million people from the general population. Among the positive COVID-19, they found fewer people with blood type 0 and more people with types A, B and AB.
Which blood groups are at higher risk for Covid-19?
“It is very important to consider the appropriate control group because the prevalence of blood type can vary considerably in different ethnic groups and different countries“says study author Torben Barington, from Odense University Hospital and the University of Southern Denmark.
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