Why was thimerosal removed from vaccines if there is no danger?
Even though there’s no evidence that thimerosal in vaccines is dangerous, the Public Health Service and the American Academy of Pediatrics believe the effort to remove mercury-based preservatives from vaccines was a good decision. Mercury exists in a different form in our environment (such as in some fish) so children will be exposed to it in other ways. We can’t always remove mercury from the environment. But we can control the mercury used in some vaccines. So, by taking thimerosal out of vaccines, we are lessening the amount of mercury a child will be exposed to early in life.