Friday, February 06, 2009

Vaccines And Autism: Many Hypotheses, But No Correlation Found

ScienceDaily (Feb. 1, 2009) — An extensive new review summarizes the many studies refuting the claim of a link between vaccines and autism.  The review, in the February 15, 2009 issue of Clinical Infectious Diseases and now available online, looks at the three main hypotheses and shows how epidemiological and biological studies refute these claims.

“When one hypothesis of how vaccines cause autism is refuted, another invariably springs up to take its place,” said study author Paul Offit, MD, of the Children’s Hospital of Philadelphia.  Fears about vaccines are pushing down immunization rates and having a real impact on public health, he added.  Vaccine refusal is contributing to the current increase in Haemophilus influenzae cases in Minnesota—including the death of one child—and was a factor in last year’s measles outbreak in California.

The controversy began with a 1998 study in The Lancet that suggested a link between the combination measles-mumps-rubella (MMR) vaccine and autism.

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