That's an interesting question. I don't know. "I'm hearing the medical professionals don't really care if they're mixing vax and unvax blood," This sounds like every medical "professional" I have ever known... they just don't care. I know a person who has gotten all the vaxxes and boosters who donates blood regularly. She's been having racing blood pressure attacks since getting the shots. She never had any issues with blood pressure before getting the shots.