During vaccinations, physicians and nurses routinely inject thimerosal into infants, toddlers, and humans of other ages. Thimerosal is 49.6% ethyl mercury by weight. The ethyl mercury portion of thimerosal is rapidly released after injection into humans and is an extremely neurotoxic mercury compound (1-2). During the 1990s, neonates - who have increased susceptibility to toxic insults - received thimerosal injections as part of the mandated Hepatitis B vaccination.

Peer reviewed, published studies make clear that thimerosal damages neurons (3) and that children who receive thimerosal injections during routine vaccinations have increased risk for developing neurobehavioral problems such as language delay and autism (4-6).