Vaccine skeptics — including Robert F. Kennedy Jr. — have long tied thimerosal in vaccines to autism, despite numerous studies finding no evidence to support that claim.U.S. Health and Human Services Secretary Robert F. Kennedy Jr. has signed off on a recommendation to remove thimerosal from all influenza vaccines, even though numerous studies have found no evidence the mercury-based preservative is harmful.The Centers for Disease Control and Prevention's Advisory Committee on Immunization Practices (ACIP) voted at their June meeting that all children, pregnant women, and adults should only receive single-dose flu vaccines that are free of mercury. The vote came...