Kennedy, who has promoted vaccine-skeptic views that experts and decades of robust research have refuted, wrote a book in 2014 falsely claiming thimerosal is "toxic to brain tissue" and may cause autism, calling for its removal from all vaccines. ????? ???????  

This preservative was previously used in some common childhood immunizations, However, in the late 1990s, federal health agencies, the American Academy of Pediatrics and vaccine manufacturers agreed to reduce or eliminate thimerosal in vaccines as a precautionary measure, which public health experts previously told ABC News gave rise to anti-vacc

Additionally, a 2010 CDC study found exposure to vaccines and immunoglobulins that contain thimerosal, in prenatal or infant stages, does not increase risk for autism spectrum disorder. ?????  

Thimerosal is a mercury-based preservative, which is used to prevent microbial contamination of vaccines. Most flu vaccines currently used in the United States contain little to no thimerosal, but both the Food and Drug Administration and the CDC say there is no evidence low doses of thimerosal in vaccines cause harm other than minor reactions at t

A few moments before, the Centers for Disease Control and Prevention's vaccine advisory committee voted 6-0 to recommend all Americans aged 6 months and older receive an annual influenza vaccine. ????????????