always ask questions
“The core question is – all vaccines by now were tested on a very large number of people, but they were not tested over long period of time. So, then the question is: during long-term testing of vaccines in last, say, 40 years: is it often that a vaccine is seen as safe after 1 year, but problems are discovered after a longer time period.”
No, this is not the core question, this is question has one intended purpose to inject fear from the unknown.
Who says 40 years is enough? why not 60 years?
Since the only way to satisfy this question is to wait 40 years, this achieves nothing but to make people hesitate and confused.
Being that hundreds of millions of people have already taken the vaccine, at this point, if your going to make a claim there needs to be some substance to base the claim on.
Unfounded far-fetched hypothetical claims have one purpose, to avoid people from taking the vaccine.