Do Vaccines Contain Mercury?

Thimerosal, a mercury-containing compound, was a common preservative used in vaccines in the 20th century. By the late 1990s, however, thimerosal was removed from children’s vaccines to ease parents’ concerns.

Now, children’s vaccines come in single-dose vials that don’t need preservatives. Since 2001, vaccines recommended by the CDC for children under 6 years of age are thimerosal-free, except in multidose vials. Most single-dose vials and prefilled syringes of flu shots and the nasal spray flu vaccine do not contain thimerosal or any other preservative.


"I lost my son to bacterial meningitis one day shy of his second birthday. I would give anything for him to have had the vaccine that is currently available.

No child should die from an illness that is preventable."