Anti-vax is the left wing’s answer to the anti-science strains in the right. One of Time’s reporters — I think it was Klein, not exactly a conservative — had an article in one of the last couple of print editions about how shocked he was about the huge number of liberal anti-vaccine folks in LA. Healing crystals and pro-health chanting are not exactly scientific. Conservatives don’t do themselves any favors when it comes to being seen as anti-science, but the left seems to get a huge pass on the anti-vaccine front. I have my own issues with Creationism, but at the same time it’s not right to “roll the dice” on polio.