CDC Website Alterations Spark Controversy Over Vaccine Claims

Published
November 21, 2025
Category
Science & Health
Word Count
378 words
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A recent alteration to the CDC website has ignited a major controversy regarding vaccine claims. According to The Guardian, the changes reflect the beliefs of Robert F. Kennedy Jr., the current U.S. Health and Human Services Secretary, who asserts a link between vaccines and autism.

This assertion starkly contradicts the consensus of experts and numerous scientifically validated studies, leading to widespread condemnation from public health officials and autism specialists alike. The updated language on the CDC's vaccine safety webpage now states, 'The statement Vaccines do not cause autism is not an evidence-based claim' and controversially adds that studies supporting a link between vaccines and autism have been ignored by health authorities.

This modification was underscored by a pre-existing statement that vaccines do not cause autism, which remains on the site due to a specific agreement with Senator Bill Cassidy, who initially opposed Kennedy's nomination but later voted to confirm him on the condition that the statement would not be removed.

The changes have been criticized for lacking scientific review, with former CDC top officials expressing their concerns. Debra Houry, a former CDC official, stated that the alteration did not go through the proper scientific clearance process, resulting in ideologically driven information being presented to the public.

Additionally, the Autism Science Foundation issued a statement expressing their dismay, stating they are 'appalled' by the distortion of content on the CDC webpage, which now includes anti-vaccine rhetoric.

The foundation noted that a previous version of the page clearly stated that studies have found no link between vaccines and autism spectrum disorder. Dr. Susan Kressly, president of the American Academy of Pediatrics, also condemned the changes, calling on the CDC to stop promoting false claims that undermine public trust in vaccines, one of the crucial tools for maintaining children's health.

The CDC, traditionally a proponent of the extensive scientific consensus that discredits the vaccine-autism link, has faced scrutiny for its current stance. As the controversy unfolds, the implications for public health and vaccine communication are significant, raising alarms about the potential erosion of trust in health institutions.

Experts assert that the alteration may reflect a broader trend of misinformation in health communication, a critical concern in light of ongoing public health initiatives aimed at increasing vaccination rates and ensuring community health.

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