We can't. If everybody turns into superheros in 10 years, we wouldnt know; or maybe this is actually the backstory of 'children of men'; we can't know. RNA vacc

We can't. If everybody turns into superheros in 10 years, we wouldnt know; or maybe this is actually the backstory of 'children of men'; we can't know. RNA vaccines are researched in animals for about a decade, but long term effects are usually not beeing found in such studies (disection usually cuts that short). There is though no theoretical nor experiental evidence for that.