More Evidence That Vaccines Don't Cause Autism

Infants exposed to the highest levels of thimerosal, a mercury-laden preservative that used to be found in many vaccines, were no more likely to develop autism than infants exposed to only a little thimerosal, new research finds.
The study offers more reassurance to parents who worry that vaccination raises their children's risk for autism, the researchers said.
"Prenatal and early life exposure to ethylmercury from thimerosal in vaccines or immunoglobulin products does not increase a child's risk of developing autism," concluded senior study author Dr. Frank DeStefano, director of the immunization safety office at the U.S. Centers for Disease Control and Prevention.
The study was released online Sept. 13 in advance of publication in the October print issue of Pediatrics.