[Boogieman]

“A few studies have shown that children who were not vaccinated at all (Amish), or who did not receive any combined vaccinations, had NO autism.”

Amish are also an isolated genetic group, and if there is a genetic link, as this article suggests, then studying isolated genetic groups is not a good methodology.

Amish also have dozens of other lifestyle differences besides vaccination that cannot be controlled for. Different diets, rates of physical activity, and rates of prescription drug use, for example.

[Missouri gal]

I have no objection to pursuing all avenues of epidemiology. However, Amish are not the only exceptions for autism. There is a physician-a pediatrician-who refuses to give MMR combined vaccine, or any other combined vaccine. He only gives these separately for children, and has seen little or no autism among his child patients. So, I'm just saying the meme that vaccines are NOT causative has not been completely ruled out.