Hepatitis B Vaccine Triples the Risk of Autism in Infant Boys
October 08, 2009
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A new study has shown that giving Hepatitis B vaccine to newborn baby boys more than triples their risk of developing an autism spectrum disorder.
The study’s authors used U.S. probability samples obtained from National Health Interview Survey (NHIS) 1997–2002 datasets.
The authors also noted that an earlier study by them found that hepatitis B vaccination was associated with receipt of early intervention and special education services.
The conclusion states that: “Findings suggest that U.S. male neonates vaccinated with hepatitis B vaccine had a 3-fold greater risk of ASD.”
The new study used a different database than their earlier study, and they found same results, suggesting a validation of their findings.