Vaccines are one of the greatest public health successes of modern medicine. From smallpox to polio to measles, vaccines have ...

What is thimerosal, does it have side effects and why is RFK Jr. removing the controversial preservative from the flu shot?

The mercury-based ingredient has prompted concerns from some organizations, although the CDC has said there is no evidence it ...

Although it has been largely phased out of U.S. vaccines, thimerosal has long been targeted by anti-vaccine advocates.

The federal government is recommending flu vaccines remove the preservative thimerosal after Health and Human Services ...

The US Department of Health and Human Services has adopted a recommendation to remove a preservative called thimerosal from ...

The action will remove from use the very few flu shots that contain the contested preservative, elevating unproven fears it ...

The CDC says there is no evidence of harm from mercury-based thimerosal.

HHS Secretary Robert F. Kennedy Jr. endorsed the CDC's Advisory Committee on Immunization Practices (ACIP) recommendation ...

Banning vaccine ingredients without cause increases the perceived risk of vaccines,” one prominent health group said.

RFK Jr. approves a nationwide shift to mercury-free flu vaccines, ending decades of thimerosal use amid rising safety and ...