RFK Jr. became fixated on a belief that many vaccines were not safe about 15 years ago. He’s since emerged as one of the leading voices in the anti-vaccine movement, and his work has been described by public health experts and even members of his own family as misleading and dangerous.

Although Trump signaled in the runup to the election that he planned to let the vaccine skeptic “go wild” on health, food and medicine, Kennedy’s official selection for the nation’s top health post sent shockwaves through the public health world,

Donald Trump on Thursday tapped anti-vaccine activist and conspiracy theorist Robert F. Kennedy Jr. as his health secretary, the latest provocative nomination from the incoming Republican president. "We want you to come up with things and ideas and what you've been talking about for a long time,