I know two people over 65 who've gotten it. Both had some sort of allergic reaction several days later. One was just a rash on the arm the other was anaphylaxis while home alone and had to call an ambulance. It was reoccurring too, but the later reactions were less severe. They tried to tell him the initial reaction was to a medication he had been taking for years but after it happened again the Dr finally admitted that it was probably an adverse reaction to the vaccine. I've also heard if people had covid recently and then get the vaccine the side effects tend to be much worse vs those who haven't had it or had it a long time ago.