Science Library Category:

Haemophilus Influenzae Type B

A Case-Control Study Evaluating the Relationship Between Thimerosal-Containing Haemophilus influenzae Type b Vaccine Administration and the Risk for a Pervasive Developmental Disorder Diagnosis in the United States
Published: 2015

There is evidence of a significant relationship between increasing organic mercury exposure from Thimerosal-containing vaccines and the subsequent risk of PDD diagnosis in males and females.


David A. Geier & Janet K. Kern & Paul G. King & Lisa K. Sykes & Mark R. Geier; Biological Trace Element Research, (2015) 163:28–38.


In this case-control study of pervasive development disorder (PDD) in U.S. children, cases were consistently exposed to higher levels of thimerosal via infant vaccines at both 6 months of age and 15 months of age, based specifically on Haemophilus influenzae type b vaccines. Differences between exposures in cases and controls were statistically significant at both ages evaluated.

View Abstract