On July 5, 2005, the Food and Drug Administration released a list of vaccines with thimerosal (49.6 percent ethyl mercury). The following vaccines, still contain mercury as part of their manufacturing process or as a preservative.
DtaP - Tripedia, Aventis Pasteur, Inc. Dtap-HepB-IPV - Pediarix, GlaxoSmithKline DT - Aventis Pasteur, Inc DT - Aventis Pasteur, Ltd. Td - Massachusetts Public Health Decavac - Aventis Pasteur, Inc Td - Aventis Pasteur, Inc. Energix - GlaxoSmithKline Hepatitis B - Recombivax HB (adult/adolescent available in preservative-free & thimerosal (mercury) containing vaccines; HepA/HepB - Twinrix - GlaxoSmithKiline Influenza: ALL INJECTED FLU VACCINES Japanese Encephalitis - JE-VAC, Biken Meningococcal - Menomune - Aventis Pasteur, Inc.
Amounts range from .5 micrograms to 25 micrograms. Check the CDC's web site for exact amounts. Vaccines with .5 micrograms are usually described as "low dose mercury" vaccines. However, there has never been any safety testing on thimerosal, so no one knows how much mercury is enough to cause harm.
Lead, a less potent neurotoxin than mercury, is considered unsafe at any level.