From the first months of the COVID-19 pandemic, researchers looked at people’s predisposition to become infected, depending on their blood type.
The results revolve around the same conclusions: if blood group 0 is considered up to 30% more protected from COVID-19, due to its particular characteristics, at the opposite pole those with blood group A may be more sensitive to SARS-CoV-2 infection.
A recent laboratory study in America found that the virus is especially attracted to the blood group A antigen found on respiratory cells. Specialists evaluated how SARS-CoV-2 interacted with respiratory and red blood cells in blood groups A, B, and 0.
The results also showed that although the virus had a greater preference for blood group A found on respiratory cells, it had no preference for red blood cells in blood group A or other groups found on respiratory or red blood cells.
For people with this blood type, the same protective measures are recommended as for everyone: social distance, wearing a protective mask and continuous hygiene.
Scientists are trying to learn as many things as possible about how the virus infects people, but these findings cannot fully describe or predict how the virus would affect patients with different blood types. However, it could explain some of the influence of blood group on SARS-CoV-2 infection.
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