Recent CDC vaccine advisory meetings have sparked considerable controversy, particularly surrounding the discussion of thimerosal, a preservative removed from childhood vaccines two decades ago. Critics have raised concerns about the hiring of a former anti-vaccine group leader by RFK Jr. to present at the meetings, questioning the credibility of the information being discussed. A series of CDC reports have reiterated that there is no link between thimerosal-containing vaccines and autism; however, a presentation to CDC advisers was found to have cited a nonexistent study, raising alarms among experts. The ongoing debates highlight a growing divide in public opinion on vaccine safety, with renewed scrutiny on ingredients that are largely absent from current immunizations.