What to Know About Thimerosal, a Target of RFK Jr.’s New CDC Vaccine Advisers
- A U.S. expert panel on vaccines convened on June 25-26, 2025, to review and vote on vaccine guidelines, including proposals related to the use of thimerosal.
- This meeting followed Health Secretary Robert F. Kennedy Jr.'s June 11 replacement of all 17 ACIP members with eight new appointees, many critical of vaccines.
- Thimerosal is a mercury-containing preservative, largely removed from childhood vaccines since the early 2000s, though used in some flu vaccines primarily for adults.
- Despite fears, over 200 studies and agencies like the CDC and FDA found no link between thimerosal and autism, with 94 percent of flu shots thimerosal-free this season.
- The panel's review and vote on thimerosal highlight ongoing controversy, with public health experts warning that politicization risks undermining confidence in vaccine safety.
49 Articles
49 Articles

CDC vaccine advisory committee recommends against flu vaccines containing thimerosal
Kayla Bartkowski/Getty Images (WASHINGTON) — The Advisory Committee on Immunization Practices (ACIP), made up of members recently hand-selected by Health and Human Services Secretary Robert F. Kennedy Jr., voted 5-1 on Thursday to recommend against flu vaccines containing the preservative thimerosal. One committee member, Vicky Pebsworth, abstained on each vote. A few moments before, the CDC’s vaccine advisory committee voted 6-0 to recommend al…

Kennedy’s vaccine committee endorses preservative-free fall flu shots
By MIKE STOBBE and LAURAN NEERGAARD ATLANTA (AP) — The Trump administration’s new vaccine advisers on Thursday endorsed this fall’s flu vaccinations for just about every American but threw in a twist: Only use certain shots free of an ingredient antivaccine groups have falsely tied to autism. What is normally a routine step in preparing for the upcoming flu season drew intense scrutiny after U.S. Health Secretary Robert F. Kennedy Jr. abruptly f…

Kennedy’s vaccine committee to vote on flu vaccines and controversial preservative thimerosal
By MIKE STOBBE and LAURAN NEERGAARD ATLANTA (AP) — U.S. Health Secretary Robert F. Kennedy Jr.’s new vaccine advisory committee backed another option to protect infants against a dangerous virus — before turning to questions about fall flu vaccines and a preservative in a small fraction of them that some antivaccine groups have falsely tied to autism. Related Articles Trump officials will give their first classified briefing to Con…

Thimerosal: What to know about the preservative from a bygone flu-shot debate
The Trump administration's vaccine advisers are bringing up an old flu-shot debate: whether it's time to wipe out the last small fraction of those vaccines that contain a controversial preservative called thimerosal.
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