Yes, but the fact that some bunch of idiots think that vaccines can make you grow a third head is not a proof that vaccines can't do any harm. That would be a

Yes, but the fact that some bunch of idiots think that vaccines can make you grow a third head is not a proof that vaccines can't do any harm. That would be a logical fallacy. Many good treatments are known still to be harmful for a small number of people with rare genetic combinations. The concept of reasonable risk is accepted in medicine. So It must be checked still (removing this people from the equation and focusing in the know verified facts, instead to dismiss it by ad-hominem).