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NIH director says he hasn’t seen evidence that vaccines cause autism

By The Hill  
   February 04, 2026

Jay Bhattacharya, director of the National Institutes of Health (NIH), said in a Senate hearing Tuesday that he has not seen any studies supporting the theory that any vaccines cause autism, a break from HHS Secretary Robert F. Kennedy Jr., who has long speculated on a potential connection and has not discounted the possibility. In a hearing held by the Senate Committee on Health, Education, Labor, and Pensions, ranking member Sen. Bernie Sanders (I-Vt.) pressed Bhattacharya on where he stood when it came to the vaccine-autism theory. Bhattacharya first said he did not believe the measles, mumps and rubella vaccine causes autism. Sanders clarified that he was not asking about a specific vaccine but whether the NIH director believed any vaccines cause autism. 'I have not seen a study that suggests any single vaccine causes autism,' Bhattacharya said.

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