CDC Alters Vaccine-Autism Stance, Sparking Scientific Outrage
The U.S. Centers for Disease Control and Prevention (CDC) has replaced its definitive statement that “vaccines do not cause autism” with language suggesting a possible link, drawing widespread condemnation from medical experts and advocacy groups.
Key Changes to CDC Website
Until Wednesday, the CDC’s “Autism and Vaccines” page prominently stated: “Studies have shown that there is no link between receiving vaccines and developing autism spectrum disorder (ASD).” This was followed by the clear declaration: “Vaccines do not cause autism.”
The updated page now begins: “The claim ‘vaccines do not cause autism’ is not an evidence-based claim because studies have not ruled out the possibility that infant vaccines cause autism.”
While the phrase “Vaccines do not cause autism” remains with an asterisk, it’s now accompanied by a note explaining its retention resulted from an agreement with Senator Bill Cassidy, chair of the Senate Health Committee.
Political Context and Official Responses
Senator Cassidy (R-La.), who cast the deciding vote for Robert F. Kennedy Jr.’s HHS secretary appointment, stated on X: “What parents need to hear right now is vaccines for measles, polio, hepatitis B and other childhood diseases are safe and effective and will not cause autism. Any statement to the contrary is wrong, irresponsible, and actively makes Americans sicker.”
HHS spokesman Andrew Dixon defended the changes, emailing: “Studies supporting a link have been ignored by health authorities. We are updating the CDC’s website to reflect gold standard, evidence-based science.”
Scientific Community Reacts
Medical experts expressed alarm at the revisions. Dr. Sean O’Leary of the American Academy of Pediatrics called it a “tragic moment” for U.S. public health, questioning: “Can we trust what’s coming from CDC anymore?”
The Autism Science Foundation condemned the changes, stating: “The CDC’s previous science- and evidence-based website has been replaced with misinformation and now actually contradicts the best available science.”
Foundation president Alison Singer added: “Just like we no longer study whether the Earth is flat, at some point with regard to autism and vaccines, you have to call it and say ‘enough is enough.'”
Current CDC Position and Scientific Consensus
The revised CDC page now suggests correlation between rising autism diagnoses and increased infant vaccinations. However, researchers attribute increasing ASD diagnoses to expanded diagnostic criteria and improved monitoring.
Colin Killick of the Autistic Self-Advocacy Network emphasized: “This issue has been studied exhaustively, and it has been shown over and over again that vaccines do not cause autism. This administration continues to lie about autism in ways that endanger both our community and the broader population.”
