i can’t remember which blood type it was, but there was one that was shown to be more vulnerable to covid.
I remember it was a type more common in whites.
So it’s not outrageous to think one race might be more vulnerable than another, though the effect might not be huge
type A
yes some diseases affect people with different heritages /genes than others a good example is Valley Fever a lung disease infected from inhaling fungus spores from dust. Primarily in California and Arizona..it affects different groups differently..especially Filipinos and African heritage...unknown why..
https://www.mayoclinic.org/diseases-conditions/valley-fever/symptoms-causes/syc-20378761