I think you are right. These idiots won't listen to science, and they won't even listen to the illness or deaths of their own children, because they'll find something else to blame. But being made to feel uncool, seriously, I think that's likely to have more of an influence.
BTW we've got the same anti-vac idiocy and then some among dog owners. Parvovirus, distemper, and lepto are all making gleeful comebacks.