Scientists at the Centers for Disease Control and Prevention were stunned this week after the agency quietly rewrote long-standing language on vaccines and autism, adding false information that has been extensively debunked.

The CDC’s website, once unequivocal that studies show “no link” between childhood vaccines and autism, now carries a very different message.

The updated page says the statement “vaccines do not cause autism” is “not an evidence-based claim,” falsely arguing that research has “not ruled out the possibility that infant vaccines contribute to the development of autism.”

It also incorrectly states that public health authorities have “ignored” studies pointing to a supposed connection. That framing mirrors arguments long pushed by one of the country’s most prominent anti

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