The astronomical rates of Autism here in California are outstanding, but many people fail to understand or discuss that the rate of children requiring special education services has also grown astronomically.
It is a theory of mine that these vaccinations, or some other widescale environmental agent or condition, is also responsible for the explosion in allergies, ADHD, and the poor test scores of American students. Teachers in California are more highly educated than ever, are teaching to the tests, yet test scores continue to lag behind that of other countries and even previous decades.
This is not to say that there aren't other contributing factors.