In a significant policy shift, the U.S. Department of Health and Human Services (HHS), led by Secretary RFK Jr., has adopted recommendations to remove thimerosal from all flu vaccines. This decision follows calls from vaccine advisory panels and aligns with growing concerns about the preservative, which has faced scrutiny for its links to autism, despite a lack of scientific evidence supporting these claims. The move to eliminate thimerosal is part of a broader strategy to reassure the public about vaccine safety and could impact the global supply of flu shots. While some celebrate this decision as a victory against vaccine misinformation, experts continue to debate the safety and historical use of thimerosal in vaccines.