Are some blood types particularly susceptible to coronavirus? Research conducted in both Germany and Norway has examined blood groups for the risk of a severe course of the disease and found large differences in susceptibility to coronavirus.

It has long been suspected that genetic factors could play a role in immune defense against corona. As early as March, Chinese scientists were concerned with the influence that a person’s blood group could have on susceptibility to the SARS-CoV-2 coronavirus. A recent study by German and Norwegian scientists has now confirmed the relationship between blood groups and the risk of coronavirus infection. 

Blood Type Tied to Risk of Severe COVID-19
Credit: National Institute of Allergy and Infectious Diseases, NIH

Corona Infection: Blood type as an influencing factor?

The research team evaluated more than 1,600 blood samples from Covid-19 patients with severe history in Spain and Italy. The genetic characteristics of the samples were compared with those of healthy blood donors. 

Relationship between Blood types and COVID-19 risk 

As a result of the investigation, it was found that the people with blood group A were more susceptible to the coronavirus. They had a significantly higher risk of a particularly severe course of the disease. However, people with blood type O, were better protected from the virus. The B blood groups were in the middle. Chinese researchers had also noticed in earlier examinations that an above-average number of Covid-19 patients had blood group A.

Study result not yet scientifically confirmed

Do people with blood group A now have to worry more about being infected with the coronavirus? In their pre-publication of the study, the researchers point out that there has not yet been a specialist review by experts. The study is therefore in the preprint stage and currently shows only one trend. The researchers also pointed out the demand for a larger data set so that they can provide a better and conclusive analysis of the blood group susceptibility of coronavirus.

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