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In reply to the discussion: Whooping Cough Back With a Vengeance in California [View all]pnwmom
(110,263 posts)That was THEIR argument. Argue it with them.
Decades ago, during the time Thimerosal was used in all the childhood vaccines, they had little research on ethyl mercury, so they used the research on methyl mercury to arrive at their stated limits. Subsequent research shows that ethyl seems to be eliminated faster than methyl, which is good. HOWEVER, they didn't know that at the point in time when they decided to eliminate Thimerosal from vaccines, and the person I was discussing this with was insisting that the government had never recommended that Thimerosal be removed from childhood vaccines -- which you know isn't true.
Though Thimerosal in subsequent research has been shown to be less dangerous than methyl mercury, it does have some risks. They still are concerned about risks to premature and low-weight infants because there hasn't been enough research on those subgroups in particular. And they know that there are risks to people who are allergic to it -- it can cause inflammation of body tissues. (For example, Thimerosal preservative has been linked to ocular inflammation when used in contact lens solutions.) Current researchers working with NIH funds are exploring whether that causes particular problems, including neurological damage, for a small subset of people exposed to it.