Vaccine injury:
Further thoughts FWIW: My operating assumption, given the apparent large increase in reported SIVRA (severe inflammation of shoulder joint (not just muscle soreness) after vaccine) is it's a combination of much more immunogenic vaccines combined with lax shot placement (reminder - I watched my pharmacist argue to inject at joint, not 2 or 3 fingers down). Lax shot placement wouldn't have mattered anywhere near as much when the vaccines were a lot less immunogenic, but now... .
And I don't expect the FDA to do anything about it until it's a scandal because vaccines are now politically coded - eg the CDC and FDA both behaved badly wrt COVID vax (CDC tried to prioritize Black's over elderly (and only reversed when the slides became public), and I watched FDA try to hide children vax data).
FTR - I favor vaccines. Strongly (eg I just got Novavax, will get pneumococcal soon). But no good comes of prioritizing social manipulation over data transparency. However Public Health has moved strongly in wrong direction.