A peer-reviewed study published April 30 in Science adds the first measured trust-erosion finding to the institutional rebukes of the CDC's revised autism-and-vaccines page. [1] The study reports that exposure to the rewritten CDC language — the November 2025 reversal that asserts "the claim 'vaccines do not cause autism' is not an evidence-based claim" — both depresses parents' stated intent to vaccinate and lowers their trust in the CDC itself. The two effects move together.

The paper's Monday brief tracked the rebukes from the AMA, Autism Science Foundation, Autism Speaks, KFF and the Infectious Diseases Society of America that have run since November without a CDC rollback. [2] The Science study moves the argument from institutional letterhead to randomized exposure with measured outcomes — the rebuke now has a citation.

CIDRAP's coverage frames the finding as the predictable downstream of "doctrine creep" into the CDC editorial layer: a public-health agency that no longer tells parents plainly that the MMR vaccine does not cause autism is, by the study's reading, less effective at the rest of its public-health communication. [3] The 1,800-plus-case measles outbreak runs alongside the page; the study suggests the page is part of why.

The CDC has not amended the language. HHS Secretary Robert F. Kennedy Jr., who pressed for the November rewrite, has not commented on the Science finding. The editorial layer absorbs the rebuke; the science the page was supposed to summarize has not changed.

-- NORA WHITFIELD, Chicago