From: Julie Steenhuysen, Reuters
Published January 7, 2010 06:45 AM

Autism clusters in California

U.S. researchers have identified 10 locations in California that have double the rates of autism found in surrounding areas, and these clusters were located in neighborhoods with high concentrations of white, highly educated parents.

Researchers at the University of California Davis had hoped to uncover pockets of autism that might reveal clues about triggers in the environment that could explain rising rates of autism, which affects as many as one in 110 U.S. children.


But the findings likely say more about the U.S. healthcare system than the causes of autism, said researcher Irva Hertz-Picciotto of UC Davis' MIND Institute, whose study will be released online on Wednesday in the journal Autism Research.

Advocacy groups have been clamoring for treatment options and for better research to show what might be causing an apparent increase in autism cases.

Hertz-Picciotto and colleagues used a research technique that has been effective at identifying cancer clusters.

"This kind of analysis sometimes turns up clues about environmental factors," she said in a telephone interview.

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