Blood Type A Could Make You More Vulnerable to COVID-19 --new study

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Early studies from China in 2020 suggested people with certain blood types—specifically blood type A—might be at greater risk for getting infected—while those with type O may be protected against infection. Some small studies confirmed the connections, while others did not, leaving public health experts agnostic about how important blood type might be as a potential risk factor for COVID-19.

... in a paper published this week in the medical journal Blood....  the cells from people with blood type A were more likely to get infected with SARS-CoV-2 than cells from people with blood type O. Type O is essentially a clean slate when it comes to blood type proteins, so it can serve as a universal donor and be transfused to people with type A, B or AB and not trigger an immune response. Types A, B and AB, however, each contain different groups of proteins, or antigens, which, as Stowell learned, makes them interact differently with the COVID-19 virus.

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