Wow. This is a scary thought. I haven't donated blood before because I'm on medication. Haven't received any because I've been blessed. But if this is true, then we're all in danger.
https://genuineprospect.com/2021/04/30/we-should-have-the-right-to-refuse-blood-transfusion-from-vaccinated-for-covid-19-but-can-we-part-3/amp/?__twitter_impression=true