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Two New Studies Seem To Indicate A Relationship Between The Degree Of Vulnerability To COVID-19 And Blood Types. According To The Study, People With Blood Type O Seem Less Vulnerable Relative To Those With Blood Types A, B, Or AB. And Also, People With Blood Types A Or AB Seem To Show The Greatest COVID-19 Disease Severity. Hmm!

More Evidence Points to Role of Blood Type in COVID-19 | MedPage Today

https://www.medpagetoday.com/infectiousdisease/covid19/89117

Two studies find ties to infection susceptibility, severity, but with caveats