More on blood type and Covid-19

https://medicalxpress.com/news/2020-10-blood-severe-covid-.html

Sample quote

More patients with type A and AB blood required dialysis for kidney failure, the study added.

The results suggest that COVID-19 patients with A and AB blood types may have an increased risk of organ dysfunction or failure than those with type O or B blood, according to the researchers.

They also found that while people with blood types A and AB didn't have longer overall hospital stays than those with types O or B, on average, they were in intensive care longer, which may indicate more severe COVID-19.

End quote