Infants receiving mercury-containing vaccines had much higher rates of autism than infants receiving vaccines without mercury.
A two-phase study evaluating the relationship between Thimerosal-containing vaccine administration and the risk for an autism spectrum disorder diagnosis in the United States
Geier DA, Hooker BS, Kern JK, King PG, Sykes LK, Geier MR. Translational Neurodegeneration. 2013;2:25.
“The present study provides new epidemiological evidence supporting an association between increasing organic-Hg [mercury] exposure from Thimerosal-containing childhood vaccines and the subsequent risk of ASD [autism] diagnosis.”