Toxic level of Mercury and the vaccine amounts.
The 1 ppm is contained (though it is fair to note for Methyl Mercury) in every FDA warning to Pregnant women about Fish Consumption.
The EPA number is parroted here...
http://www.mercola.com/2003/apr/9/diet_mercury.htm
FDA, thimerasol,
A vaccine containing 0.01% thimerosal as a preservative contains 50 micrograms of thimerosal per 0.5 mL dose or approximately 25 micrograms of mercury per 0.5 mL dose.
http://www.fda.gov/cber/vaccine/thimerosal.htm