Science Library Category:

Developmental Disability

Published: 2008

Boys receiving the Hepatitis B vaccine series were nine times more likely to need special education and be developmentally disabled.


Hepatitis B triple series vaccine and developmental disability in US children aged 1-9 years


Carolyn Gallagher and Melody Goodman. Toxicological and Environmental Chemistry, Vol 90, No. 5, September-October 2008, 997-1008.


“This study investigated the association between vaccination with the Hepatitis B triple series vaccine. The odds of receiving Special Education were approximately nine times as great for vaccinated boys (n 1/4 46) as for unvaccinated boys (n 1/4 7), after adjustment for confounders. This study found statistically significant evidence to suggest that boys in United States who were vaccinated with the triple series Hepatitis B vaccine, were more susceptible to developmental disability than were unvaccinated boys.”

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