The preservative is in a small share of flu shots and has been studied for decades. Experts say it’s safe — despite Kennedy’s long opposition.

"This is a very clear effort to shine a light on this anti-vaccine trope: that thimerosal is somehow dangerous.” ...

Thimerosal has been at the heart of Health and Human Services Secretary Robert F. Kennedy Jr.’s antivaccine activism for 20 ...

The CDC's vaccine advisory committee voted to recommend annual flu vaccines but against flu shots containing the preservative thimerosal ...

The CDC's newly rebuilt Advisory Committee on Immunization Practices (ACIP) took aim Thursday at a mercury-based preservative ...

The Advisory Committee on Immunization Practices (ACIP), recently remade by Health and Human Services Secretary Robert F.