Headlining a conference for Children’s Health Defense, the nonprofit he previously led that regularly spreads vaccine misinformation, Health and Human Services Secretary Robert F. Kennedy Jr. made a litany of familiar false and misleading claims, particularly about vaccines.
For a few months earlier this year, Kennedy had largely stopped talking about vaccines, reportedly at the request of the White House. Facing a surge of measles cases not seen in a generation, Kennedy had also at times offered a lukewarm recommendation to vaccinate, frustrating his hardline anti-vaccine supporters.
But in August, Kennedy appeared with President Donald Trump during the signing of an executive order that called for splitting up the measles, mumps and rubella, or MMR, vaccine. Trump inaccurately said the MMR vaccine is “quite lethal,” and Kennedy proceeded to falsely claim on cable television that there was new evidence to support breaking up the combination shot. The secretary also began an ongoing beef with Democratic Gov. Josh Shapiro of Pennsylvania over measles-associated deaths in the state.
Then, on Sept. 17, Kennedy gave the keynote speech for the one-day conference of Children’s Health Defense in Washington, D.C. Children’s Health Defense describes itself as working to “restore and protect the health of children by eliminating exposures to environmental toxins.” But the organization is one of the biggest sources of inaccurate vaccine information.

