❓WHAT HAPPENED: The mercury-based preservative thimerosal will be officially removed from all flu shots distributed in the U.S. by the Department of Health and Human Services (HHS).
👤WHO WAS INVOLVED: The Department of Health and Human Services and Health Secretary Robert F. Kennedy Jr.
📍WHEN & WHERE: United States, July 23, 2025
💬KEY QUOTE: “After more than two decades of delay, this action fulfills a long-overdue promise to protect our most vulnerable populations from unnecessary mercury exposure. Injecting any amount of mercury into children when safe, mercury-free alternatives exist defies common sense and public health responsibility. Today, we put safety first.” — Robert F. Kennedy Jr.
🎯IMPACT: Removing mercury-based additives from vaccines marks a major shift in U.S. vaccine policy and fulfills a bipartisan health promise made over 25 years ago.
The Department of Health and Human Services (HHS) will officially remove the mercury-based preservative thimerosal from all flu shots distributed in the U.S. to build safer immunization practices. On Tuesday, Secretary Robert F. Kennedy Jr. signed the Centers for Disease Control and Prevention (CDC) Advisory Committee on Immunization Practices (ACIP) recommendations to remove mercury-based preservative thimerosal from all influenza vaccines distributed in the United States.
“After more than two decades of delay, this action fulfills a long-overdue promise to protect our most vulnerable populations from unnecessary mercury exposure,” Secretary Kennedy said. “Injecting any amount of mercury into children when safe, mercury-free alternatives exist defies common sense and public health responsibility. Today, we put safety first.”
Secretary Kennedy’s newly appointed ACIP members broke with long-standing inaction by voting to remove mercury entirely from all influenza vaccines. Kennedy recently fired all members of the panel and replaced them.
Vaccine manufacturers have confirmed that they can replace multi-dose vials containing mercury. The Vaccines for Children (VFC) program and adult vaccine supplies will remain uninterrupted.
Efforts to remove mercury from all childhood vaccines began in 1999, when it was agreed that the potential risks from mercury warranted its removal as soon as possible. Kennedy’s action fulfills the 1999 pledge.
Years before he stepped into his current role, Kennedy wrote a book pushing for thimerosal’s removal from vaccines, citing concerns about its connection to developmental issues.
“With the U.S. now removing mercury from all vaccines, we urge global health authorities to follow this prudent example for the protection of children worldwide,” Secretary Kennedy said.
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