What is the reason that the Amish colonies are reported to have no autism among their young? Is this because they avoid childhood vaccination?

There is a rough approximation with respect to percentage of the populace in those colonies receiving vaccination and autism in their young, both of which do occur to an appreciable extent. Neither are rare occurrences, but a lower percentage basis than the general population and this has been studied with some care scientifically. The reason for somewhat lower incidence of autism is the frequency of alien abduction being correspondingly lower among those families. This is a deliberate manipulation and an intentional correspondence being sought, to keep the story alive that vaccines are suspect. This helps the Extraterrestrial Alliance by giving a plausible point of focus for the consternation of mothers beside themselves, because their infant suddenly has a great change in personality and behavior and little else has happened to them outside the home but a trip to the pediatrician for a vaccination. At the same time, the extraterrestrials are not unhappy with less vaccination because their role in producing the bacterial pathogens and viruses that mandate this safeguard are their handiwork and they would be quite happy to go back to pre-vaccine days and watch much greater suffering across the board. Not only will stopping vaccination cause great harm, it will not prevent the manipulation of human youngsters to damage their minds.