Robert F. Kennedy Jr. on thimerosal in vaccines: warns against

Robert F. Kennedy Jr. has long warned against mercury exposure from vaccines, and his reconstituted ACIP voted to remove thimerosal from influenza vaccines in June 2025, per Pharmacy Times’ March 2026 reporting.

Kennedy’s stated reasoning is that a mercury-based preservative has no place in products given to children and pregnant people, regardless of the doses involved. Thimerosal was largely removed from U.S. childhood vaccines in 2001 (remaining only in some multi-dose flu vials), and public-health agencies have said evidence does not show harm at vaccine doses — a position Kennedy rejects.

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