Hepatitis B vaccine could triple risk of autism in infant boys
An article by David Kirby, author of Evidence of Harm, a founding contributor to Huffington Post, in the Age of Autism raises questions over the sixteen studies which claim to show no causal association between vaccines and autism on the basis that...
'...the 16 or so studies constantly cited by critics of the hypothesis have examined just one vaccine and one vaccine ingredient. And the studies themselves have critical design flaws and limitations.
'The current US childhood immunization schedule calls for 28 injections with 11 different vaccines against 15 different diseases by two years of age. Of those 11 vaccines, only the Measles-Mumps-Rubella (MMR) shot has been studied in association with autism, (although a CDC study of an MMR-plus-chickenpox vaccine did show that the risk for febrile seizures in infants was doubled.)
'Meanwhile, those 11 vaccines contain scores of ingredients, only one of which, thimerosal, has ever been tested in association with autism.
'It is illogical to exonerate all vaccines, all vaccine ingredients, and the total US vaccine program as a whole, based solely on a handful of epidemiological studies of just one vaccine and one vaccine ingredient. It is akin to claiming that every form of animal protein is beneficial to people, when all you have studied is fish.'
He now suggests that the hepatitis B vaccine could also be a cause for concern, citing a new study an abstract which was published in the September 2009 issue of the respected journal Annals of Epidemiology.
In it, Carolyn Gallagher and Melody Goodman of the Graduate Program in Public Health at Stony Brook University Medical Center, NY, wrote that, “Boys who received the hepatitis B vaccine during the first month of life had 2.94 greater odds for ASD compared to later- or unvaccinated boys.” The authors used U.S. probability samples obtained from National Health Interview Survey (NHIS) 1997–2002 datasets. The conclusion states that: “Findings suggest that U.S. male neonates vaccinated with hepatitis B vaccine had a 3-fold greater risk of ASD; risk was greatest for non-white boys.”
This is not the first time that concerns ahve been raised over hepatitis B vaccines:
Most of this increase was due to the Engerix B brand of the vaccine, manufactured by the UK's GlaxoSmithKline. That brand increased the risk of demyelination by 74%, and patients with confirmed multiple sclerosis were nearly three times more likely to develop the disorder.
First published in September 2009
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