Fact check: What you need to know about Trump’s misinformation about vaccines, autism and hepatitis B

President Donald Trump’s Monday comments about autism and public health were filled with misinformation that left many doctors aghast – and not just about Tylenol.

Most of the media coverage of Trump’s press conference centered around his repeated advice to pregnant Americans to try to avoid taking Tylenol, which he based on a supposed link to autism that has not been proven. But the president also made a series of additional comments about autism, vaccines, and hepatitis B that ranged from unproven to misleading to false.

Trump said he has “been hearing” that the combination measles, mumps and rubella (MMR) vaccine is “bad” and called to split it up into separate shots. But the combination has proven safe and effective since it was approved in the 1970s, and it has no link to autism.

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Article URL : https://www.cnn.com/2025/09/27/politics/fact-check-tylenol-autism-trump