Comment: It doesn't help that pharmaceutical trials are conducted by those who stand to profit typically massaging the evidence to make the benefit appear greater and the risk lower.  In some cases the risks of harm are not fully disclosed.  The pharmaceutical companies have much to answer for.

Anti-vaccers are fearful that that vaccinations may have undisclosed harms despite all evidence to the contrary.  I suspect that they get most of their information not directly from the discredited studies but from the celebrities who promote this kind of nonsense.