Stewie - Yes, Amish have very few autistic children, and no, they don't have high vaccination rates at all. They have a "religious exception" to vaccination.
Here is what an Amish woman has to say on the subject.
"Unfortunately our autistic daughter who's doing very well, she's been diagnosed with very, very severe autism is adopted from China, and so she would have had all her vaccines in China before we got her, and then she had most of her vaccines given to her in the United States before we got her."
"Almost every Amish family I know has had somebody from the health department knock on our door and try to convince us to get vaccines for our children," she said. "The younger Amish more and more are getting vaccines. It's a minority of children who vaccinate, but that is changing now."
Did she know of any other autistic Amish? Two more children, she said.
"One of them, we're very certain it was a vaccine reaction, even though the government would not agree with that."