Here is one study that suggests that rubella vaccinations actually help to prevent ASD's in children, because of the association seen between ASD's and congenital rubella syndrome.
http://www.biomedcentral.com/1471-2458/11/340Some children in the general population do get sick after vaccinations, and some autistic children have gotten sick after vaccinations, with some parents seeing significance in the vaccine and their child getting sick rather than realizing their child already had autism, and is one of the individuals in the population that do happen to get sick after getting vaccinated.
Unfortunately, it is hard to convince some of the parents that their children were born with autism and did not acquire it through an illness or the vaccination itself.
It's part of the reason why research is important, to help people understand that it is likely that autism happens in the prenatal environment not the post natal environment.
idk where autism happens. my dad and mom have traits so i think they just combined right to make me more severe than they were.