I suppose it's the usual thing where the vast majority who have no effects don't post and the ones who do, tend to post. Vaccinations are a commonplace thing, but the various COVID-19 ones have become politicised and people are unusually sensitive to any possible effects. I've had many vaccinations over the years. Coming from a forces' family I often felt like a pin cushion when I was a kid, and had a range of expected side effects.
However, my wife and I had the first dose of the Pfizer Biontech vaccination a month ago and I have to say that it was remarkable for two reasons.
Firstly because despite the huge turn out on that particular day it was so well organised that we passed through the system in a very short time and were in the observation area longer than anywhere else.
Secondly it was remarkable for being so unremarkable. The vaccination was over before we knew it, and despite it sounding like a cliche, we literally didn't feel a thing. The following day my arm felt slightly heavy if I thought about it, but that soon went. Wife complained of a slightly achey arm. Just waiting for the second dose now. Possibly different reactions to that one? And I'm 68.