A Centers for Disease Control and Prevention website that previously said vaccines do not cause autism walked back that statement, contradicting the agency’s previous efforts to fight misinformation about a connection between the two.

The agency’s webpage on vaccines and autism, updated Wednesday, now repeats the skepticism that Health Secretary Robert F. Kennedy Jr. has voiced about the safety of vaccines, though dozens of scientific studies have failed to find evidence of a link.

A previous version of the webpage said that studies had shown “no link between receiving vaccines and developing autism spectrum disorder.” It cited a 2012 National Academy of Medicine review of scientific papers and a CDC study from 2013.

On Thursday, the live version of the page stated: “The claim ‘vaccines

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