I'm 66 and I have always had vaccinations from the time I was a child and I suppose I've always had some proof of it. How else would they track who'd been vaccinated and who had not?
But the thing is, why would I even entertain the thought of not being vaccinated when a vaccine is available? My parents certainly leaped at the opportunity for me not to have rubella, mumps or polio, silly fascists that they were.
Please stop comparing yourself and other people who have not experienced a single moment of even petty discrimination to the sufferings of six million Jewish victims of genocide, because it makes me want to vomit. That's called, I think, a "side effect."