I know exactly five people who have received the vaccine; some of these twice. Of these five two have had no reaction. The other three did. One was a man about age 30; he said he would not allow a vaccination again.
Anecdotally, between just the two of us, the bad vaccine reaction is higher than fifty percent. Wow!
We as a species will be lucky if the problems don’t continue to manifest for decades. Also, apparently, some percentage of the mRNA material was actually DNA. No telling what the eventual outcome of that might be.