[quantumBerry]

Of course not in all cases can we prove that the health issues are 100% the shot, but it looks extremely likely the shot causes health issues in rare cases [1]:

  -Anaphalaxysis in 2-5 per million peoples

  -Thrombosis (2 reported cases from J&J)

  -Myocarditis / Pericarditis : 854 confirmed

The benefits appear to far exceed the risk at the population level. But that's not much consolation at the individual level if you are someone predisposed to anaphylaxis or thrombosis, which are potentially life threatening, in which case at the individual level the vaccine may look to not be worth the risks. Better screening tools could help identify individuals with these risks.

I'm also not sure there are any mRNA vaccines for which we have to compare in humans that have been out few years and FDA approved. It is my understanding the COVID vaccine was the first widely distributed mRNA vaccine in humans. I have no reason to believe they are dangerous, but they are lacking any long term studies in humans on any large scale.

[1] https://www.cdc.gov/coronavirus/2019-ncov/vaccines/safety/ad...

[inciampati]

We are also lacking evidence for what happens after booster shots are given repeatedly. (Or even in the cohort that has been infected and double vaccinated.) We are participating in an open trial to find out. It's only rational to consider that there may be yet-unobserved risks.