I have to say I am not too sure why people become anti-vaxers, but I do agree with you that trying to convince them with science is not likely to succeed.<p>Anti-vax is worse than child abuse. If you don’t vaccinate your children you are not only putting them at risk (child abuse), but you are putting my children at risk through lowering the herd immunity. I have zero tolerance for crazy ideas that risk the health of my children.<p>The way we have tackled this problem in Australia is by tying the welfare system to vaccination - no vaccination, no child payments from the government. It is amazing how most anti-vaxers change their tune when it is going to cost them money.