This is just anecdotal, but I personally have lingering issues from my vaccinations - I started experiencing moderately intense joint pains a few weeks after my booster shot, and they've been cyclically recurring for the past 15 months. I was afraid that it was Rheumatoid Arthritis and saw multiple rheumatologists, who told me that the vaccine likely caused my issues, and that they had seen a big uptick in young men coming to them with problems ever since the vaccines were deployed. Another friend of mine developed permanent tinnitus after his second shot.