FactCheck.org · Aug 18, 2026
RFK Jr. Falsely Claims New Evidence Supports Splitting MMR Vaccine
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Following an executive order that called for breaking up the combination measles, mumps and rubella, or MMR, vaccine, Health and Human Services Secretary Robert F. Kennedy Jr. said that a “recent” study “just came out” that “very strongly supports” the idea. But there’s no evidence of any such credible study, past or present.

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