Well, again, let's be clear and not propagate misinformation. Risk factors regarding susceptibility to infection or to severe disease apropos of your blood group/blood type may well vary according to what you've got. That is to be expected and is normal, in that our genetics are all different, including blood groups. But this is not a susceptibility-to-coronavirus thread. It's a vaccination thread. The risk factors you refer to have nothing to do with the vaccines. I haven't seen any evidence that any vaccine is any more dangerous to any specific blood type. Please correct me if I'm wrong. Otherwise, it looks like you're clutching at straws.