I'm not wanting to start the whole "should we vaccinate or not" debate but this article is interesting in an overall sense of the Amish pretty much shun all CW ways including vaccinations.

Hard work, whole foods (perhaps not all primal but still...), rise when the sun rises, sleep when it sets.

Sounds pretty darn primal to me.

The Amish Don't Get Autism and They Don't Get Vaccinated... Possible Link? » Survival and Beyond