Somewhat distantly related, have you seen https://www.reddit.com/r/COVID19/comments/fjzjpc/relationship_between_the_abo_blood_group_and_the/flct9wh/?context=3 h

Somewhat distantly related, have you seen https://www.reddit.com/r/COVID19/comments/fjzjpc/relationship_between_the_abo_blood_group_and_the/flct9wh/?context=3 https://www.reddit.com/r/COVID19/comments/fjzjpc/relationshi... ? (also see the old sars paper my comment cites and the surrounding thread)