David Kirby Mercury Quotations

Does mercury in vaccines cause autism in children? A definitive answer has proven elusive, and it remains so to this day. No one can say with certainty that thimerosal ... helped fuel an explosion in reported cases of autism, ADD, speech delay and other disorders over the past decade. But no one can say for certain that it did not.

Evidence of Harm, Mercury in Vaccines and the Autism Epidemic: A Medical Controversy.