I hear the flu shot still has it. Of course that shot isn't necessary and I would never get it and it doesn't keep you immune for long. It is common sense that mercury will hurt you since it doesn't go well with humans. What mercury does is when it enters your body, it stays in certain tissues and may never leave them. I guess green tea and other remedies can clean these heavy metals out if you drink enough of it, but that isn't an option if you are so young and kids can't drink that stuff. Actually, mercury doesn't cause brain damage but it sits in tissues like your brain and that can cause neurons to be blocked and electrical signals as well. That can cause diseases and conditions to develop, like Alzheimer’s. I believe that is one cause of Alzheimer’s.
That is what poison does and how it hurt you. It blocks blood flow, electrical signals, or the flow of other necessary things in your body that are vital to keeping you alive, as far as I know. Poisons might do more than that; I'm not sure.
http://www.fda.gov/cber/vaccine/thimerosal.htmSelections. Again, bolded for quick points.
Over the past several years, because of an increasing awareness of the
theoretical potential for neurotoxicity of even low levels of organomercurials and because of the increased number of thimerosal containing vaccines that had been added to the infant immunization schedule, concerns about the use of thimerosal in vaccines and other products have been raised. Indeed, because of these concerns, the Food and Drug Administration has worked with, and continues to work with, vaccine manufacturers to reduce or eliminate thimerosal from vaccines.
Thimerosal has been removed from or reduced to trace amounts in all vaccines routinely recommended for children 6 years of age and younger, with the exception of inactivated influenza vaccine (see Table 1). A preservative-free version of the inactivated influenza vaccine (contains trace amounts of thimerosal) is available in limited supply at this time for use in infants, children and pregnant women. Some vaccines such as Td, which is indicated for older children (≥ 7 years of age) and adults, are also now available in formulations that are free of thimerosal or contain only trace amounts. Vaccines with trace amounts of thimerosal contain 1 microgram or less of mercury per dose.
Guidelines on Exposure to Organomercurials
Mercury is an element that is dispersed widely around the earth. Most of the mercury in the water, soil, plants and animals is found as inorganic mercury salts. Mercury accumulates in the aquatic food chain, primarily in the form of the methylmercury, an organomercurial. Organic forms of mercury are more easily absorbed when ingested and are less readily eliminated from the body than are inorganic forms of mercury.
Humans are exposed to methylmercury primarily from the consumption of seafood (Mahaffey et al. 1997).
Basic sum up
1. The concern is theoretical. I assume there is no definitive study that shows direct causation of what you're talking about.
2. Even because of theoretical concerns, it is no longer on vaccines required for children under 6.
3. The compounds in these vaccines are found in nature and are at least tolerable at low levels. Exposure to these compounds will not kill you outright. it would require a large amount it. If vaccines carried the amount large enough to kill kids, they'd be dying of mercury poisoning left and right. They aren't.