[aeternum]

Why should the evidence be overwhelming? Look at how long it took for the evidence for things like smoking, lead in gasoline, DDT to show up.

If the harm is acute then sure evidence should be overwhelming but we should continually look for evidence of injury as it could be subtle.

We should also keep in mind that even if we do find a rate of injury higher than originally thought, the overall benefit of the vaccine may still be positive as Covid itself has a higher rate of injury.