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Thimerosal is a compound that is 49.6% mercury by weight. Although it is not used in all vaccines (for example, it is not used in measles-mumps-rubella or chickenpox vaccines), it has been part of the manufacture of many vaccines since the 1930s. Thimerosal has been used: to kill the bacteria that make the vaccine itself (e.g., whole cell pertussis vaccine) to kill bacteria that might enter the vaccine during the production process (e.g., influenza vaccine) as a preservative to prevent bacterial and fungal contamination of vaccines during their clinical use. In this case, thimerosal is added at the end of the production process either to the liquid vaccine itself or — in the case of dry powder vaccines — to the liquid used to dilute the vaccine Unless used as a preservative, thimerosal contributes little to the final concentration of thimerosal in vaccine (at most 2 to 3 micrograms of thimerosal per milliliter of vaccine), so the chief concern ha...

Thimerosal is a Mercury compound. Thimerosal is also known as ethyl Mercury.  Mercury is a known neuro-toxin. It can cross the placenta and blood brain barrier then, concentrate in the blood and brain.  This alone would have made me think twice, had I known. I also found out, the dose given to a forty pound five year old is the same as given to an eight pound two month old. These are known carcinogens and there are no “safe amounts” allowed in the human body. The U.S. Public Health Service and the American Academy of Pediatrics found that some children could be exposed to cumulative levels of Mercury over the first six months of life that exceed federal guidelines. By age two, American children have received 237 micrograms of Mercury though vaccines. This far exceeds the EPA’s current safe level of 1/10th of 1 microgram per kilogram a day. Thirty-five micrograms will kill a rabbit. This amount would be equivalent to injecting a 100lb adult with 40 vaccines in one day.  ...

Thimerosal is the preservative of choice for vaccine manufacturers. First introduced by Eli Lilly and Company in the late 1920s and early 1930s, the company began selling it as a preservative in vaccines in the 1940s. Thimerosal contains 49.6 percent mercury by weight and is metabolized or degraded into ethylmercury and thiosalicylate. Mercury, or more precisely, ethylmercury, is the principle agent that kills contaminants. Unfortunately, mercury also kills much more than that. The Department of Defense classifies mercury as a hazardous material that could cause death if swallowed, inhaled or absorbed through the skin. Studies indicate that mercury tends to accumulate in the brains of primates and other animals after they are injected with vaccines. Mercury poisoning has been linked to cardiovascular disease, autism, seizures, mental retardation, hyperactivity, dyslexia and many other nervous system conditions. That's why the FDA rigorously limits exposure to mercury in foods and d...