What might also be worth to realize that the illusory truth effect is a thing, i.e. "the tendency to believe false information to be correct after repeated exposure." "[A 2015] study suggested that the truth effect can influence participants who actually knew the correct answer to begin with, but who were swayed to believe otherwise through the repetition of a falsehood." (From Wikipedia.) I can understand why one might choose to downvote such a "genuine" question when it's easy to find that the answer is "no" (it's mentioned on the COVID-19 misinformation Wikipedia page).
Like when someone say "vaccines are safe and effective", "vaccines are safe and effective", repeatedly, when the statement itself is very wrong because of the generalisation of "vaccines"...
Can you show me a rich country where all vaccine AEFIs are strictly reported and followed up and serious ones investigated?
If not, then I am not sure how you can make that claim.
In general if you Google this without a pretty in depth understanding of biology and immunology you’ll go down a rabbit hole that would just reinforce your current position.
Asking a question shouldn’t be downvoted and even if you haven’t you shouldn’t excuse this behavior.