CDC Website Updated with Inaccurate Information Connecting Vaccines to Autism

In a controversial move that has alarmed public health experts, the US Centers for Disease Control and Prevention’s website was altered Wednesday to replace established scientific information with content questioning the safety of vaccines. The updated page now contains anti-vaccine talking points that challenge the scientific consensus on vaccines and autism.

The modified CDC webpage maintains its headline stating “Vaccines do not cause Autism” but adds an asterisk directing readers to a footnote. This footnote explains that the header remains only due to “an agreement with the chair of the U.S. Senate Health, Education, Labor, and Pensions Committee.” This appears to reference a commitment made by Health and Human Services Secretary Robert F. Kennedy Jr. to Senator Bill Cassidy of Louisiana during Kennedy’s confirmation process.

The updated bullet points on the page now claim that “vaccines do not cause autism is not an evidence-based claim” because studies have allegedly not ruled out the possibility that infant vaccines cause autism. This directly contradicts the scientific consensus and decades of research.

The Autism Science Foundation swiftly responded on Thursday with a statement affirming, “The science is clear that vaccines do not cause autism. No environmental factor has been better studied as a potential cause of autism than vaccines. This includes vaccine ingredients as well as the body’s response to vaccines.”

Other new content on the CDC page falsely suggests that studies supporting a link between vaccines and autism have been ignored by health authorities. In reality, studies claiming such connections have been thoroughly reviewed and found to be fraudulent, methodologically flawed, or biased. Meanwhile, numerous well-designed, credible studies have consistently found no causal relationship between vaccines and autism.

The webpage also indicates that HHS has launched a “comprehensive assessment” of autism causes, including investigations into “plausible biologic mechanisms and potential causal links.”

HHS spokesman Andrew Nixon defended the changes on Thursday, stating, “We are updating the CDC’s website to reflect gold standard, evidence-based science.” However, the modifications appear to contradict rather than reflect scientific consensus.

Dr. Demetre Daskalakis, who recently resigned as director of the CDC’s National Center on Immunization and Respiratory Diseases, condemned the alterations on social media, calling them “a national embarrassment” and “a public health emergency.” He told CNN that CDC scientists were “completely blindsided” by the page update, adding, “This distortion of science under the CDC moniker is the reason I resigned with my colleagues.”

This controversial website change represents the latest in a series of actions by the Trump administration to alter long-standing U.S. vaccine policies and practices. Kennedy, a well-known vaccine skeptic before his appointment, has hired several anti-vaccine allies to key positions, including David Geier, a discredited researcher once disciplined by the Maryland State Board of Physicians for practicing medicine without a license, and Lyn Redwood, a former president of the World Mercury Project (later renamed Children’s Health Defense) – an anti-vaccine organization previously led by Kennedy.

The timing of these changes is particularly concerning as childhood vaccination rates have declined in the United States, contributing to a resurgence of preventable diseases. The country is currently experiencing its highest number of measles cases in 25 years. CDC disease specialists warned state health officials on Monday that the United States’ status as a country that has eliminated continuous measles transmission may be in jeopardy as cases continue to increase.

Public health experts worry that these changes to official government health information could further erode public trust in vaccines and contribute to declining vaccination rates, potentially endangering public health across the nation.