14 minute video
https://www.youtube.com/watch?v=aU7uBmLUiiY
Overall, more than 90% of current blood donors have either been infected with covid or vaccinated against it, said Dr. Michael Busch, director of the Vitalant Research Institute, who is monitoring antibody levels in samples from the U.S. blood supply.
Less than 10% of the blood we collect does not have antibodies, Busch noted.
https://archive.is/9gSTQ#selection-671.256-671.501
I'm right there with you. I just had a discussion with a coworker over lunch about this exact thing! Whether I have antibodies or not is no one's business. Whether someone else has the vaccine or not is non of their business. None of this is their business.