Interesting laboratory study on how blood type A antigens on respiratory cells’ surface may provide another way for SARS-CoV-2 to enter the body increasing infection risk. However, no clinical outcome data as this looked only at in vitro effects.

Dr. Barry Dworkin

Medical Mythbusting Commentary for March 9, 2021

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Source:
Why blood type A may increase COVID-19 risk

Reference:
The SARS-CoV-2 receptor-binding domain preferentially recognizes blood group A

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