Where are the autistic Amish? Here in Lancaster County, heart of Pennsylvania Dutch country, there should be well over 100 with some form of the disorder. I have come here to find them, but so far my mission has failed, and the very few I have identified raise some very interesting questions about some widely held views on autism. The Amish have a religious exemption from vaccination. So far, there is evidence of only three, all of them children, the oldest age 9 or 10. Julia is one of them. She...is adopted from China. She had most of her vaccines given to her in the United States before we got her. [Of the other one definitely had a vaccine, and the other's vaccine status is unknown.] The mainstream scientific consensus says autism is a complex genetic disorder, one that has been around for millennia at roughly the same prevalence. That prevalence is now considered to be 1 in every 166 children born in the United States.