Can people with AB0 blood group be more susceptible to SARS-CoV-2 coronavirus infection?
Researchers and doctors from Wuhan and Shenzhen suggest that the blood group to some extent determines the risk of SARS-CoV-2 infection and the course of the disease. It is indicated that patients with blood group A have a much higher rate of infection and pass it much worse. In contrast, people with blood group 0 probably have a significantly lower risk of infection.
It seems that the epidemiological situation in China is already under control. The experience of the local doctors is very valuable. In recent days, Chinese researchers have reported that people with blood group A may be more susceptible to infection with new coronavirus, while people with type 0 appear more resistant. However, the research is preliminary and it is still emphasized that this is not the only predictive factor.

Chinese researchers included over 2,000 infected patients in Wuhan and Shenzhen in their analysis and compared them with local healthy populations (1,775 COVID-19 patients, including 206 fatalities from Wuhan Jinyintan Hospital and 113 and 285 COVID-19 patients from the hospital Renmin of Wuhan University and the Third People's Hospital in Shenzhen). It turned out that patients from blood group A showed a higher infection rate and tended to develop more severe symptoms.

Although the researchers emphasize that the study was pilot and the need for a larger sample, they emphasize the importance of their initial study results, suggesting additional blood group determination for each SARS-CoV-2 infected. They also suggest the legitimacy of increased precautions in healthy people with blood group A, which would be more exposed.

As the author of the study wrote, Wang Xinghuan (a scientist from the Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University), people with blood group A may need particularly enhanced personal protection to reduce their risk of serious infection. In addition, patients infected with SARS-CoV-2 with blood group A may require more vigilant supervision and more aggressive treatment.

In turn, people with blood group 0 had a significantly lower risk of developing COVID-19 compared to people with other blood groups. Researchers have indicated, for example, that of the 206 patients included in the analysis who died of COVID-19 in Wuhan, the most common blood group was group A.

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