The United States will stop distributing all influenza vaccines that contain mercury-based preservative thimerosal, marking ...

U.S. Health and Human Services Secretary Robert F. Kennedy Jr. has approved a major Centers for Disease Control & Prevention ...

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

Thimerosal, which contains an organic compound of mercury, has been phased out as a preservative for vaccines. Here’s how we know it was safe to use ...

Thimerosal is an ingredient that helps keep vaccines pathogen free. Health and Human Services Secretary Robert F. Kennedy Jr., a noted vaccine skeptic, has falsely stated the ingredient is a ...