Autism cluster found in Santa Clara County linked to parent education, not neighborhood toxins

Lisa Krieger:

Researchers have identified a cluster of autism cases in the South Bay — but the elevated regional incidence seems linked to parents’ ability to gain a diagnosis for their child, rather than any geographic risk.
A rigorous study of all 2.5 million births in California between 1996 and 2000 revealed 10 places where the disability is more common than elsewhere in the state — including the Sunnyvale-Santa Clara area, the San Carlos-Belmont area and several parts of southern California and Sacramento.
The scientists found a correlation, not cause, concluding that parents of autistic children in these clusters were more likely to be white, live near a major treatment center, be highly educated and
There was a lower incidence of the diagnosis where families were Latino and less educated.
A diagnosis of autism requires considerable advocacy by parents, who must navigate the complex world of pediatrics, psychiatry and autism experts. Once diagnosed, children gain access to all types of specialized services.

UC Davis MIND Institute press release.