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Inside Fatherhood

Rise in California autism rate

by Bill on January 9th, 2008

CNN posted an interesting article on Monday about an increased rate in autism in California despite a change in a vaccine additive which historically was linked to and blamed for the disorder. The mercury-based preservative thimerosal, which was targeted as the root of the steep rise in autism, was removed from the vaccine in 2001 yet instances of autism continue to rise.

Although still used in some flu shots, doctors are seeing this latest data as further evidence which weakens the link between vaccinations and autism. As a casual observer I would see it weakening the link between thimerosal and autism, not vaccines and autism. In addition, thimerosal is still used in some flu shots.

Researchers from the state Department of Public Health found the autism rate in children rose continuously during the 12-year study period from 1995 to 2007. The preservative thimerosal hasn’t been used in childhood vaccines since 2001, but is used in some flu shots.

Doctors say the latest study adds to existing evidence refuting a link between thimerosal exposure and autism risk and should reassure parents that the disorder is not caused by vaccinations. If there was a risk, they said, autism rates should have dropped between 2004 and 2007.

The findings show “no evidence of mercury poisoning in autism” since there was no decline in autism rates even after the elimination of thimerosal, said Dr. Eric Fombonne, an autism researcher at Montreal Children’s Hospital who had no role in the research.

- via cnn.com

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