The U.S. Centers for Disease Control and Prevention (CDC) website underwent modifications that contradict the established scientific consensus that vaccines do not cause autism, leading to criticism from various public health and autism experts. The CDC’s “vaccine safety” webpage was recently updated to state that the assertion “Vaccines do not cause autism” lacks evidence-based support.
This alteration is part of a broader trend within the U.S. Department of Health and Human Services to reassess and introduce doubt about long-standing scientific agreements regarding the safety of vaccines and other pharmaceutical products. The adjustment was swiftly condemned by researchers and advocates who have been dedicated to investigating the origins of autism.
The Autism Science Foundation expressed dismay over the altered content on the CDC webpage, accusing it of now promoting anti-vaccine sentiments and spreading falsehoods about vaccines and autism. Despite widespread scientific consensus and numerous studies affirming the absence of a connection between vaccines and autism, the CDC’s recent stance has raised concerns among health professionals.
Dr. Susan Kressly, the president of the American Academy of Pediatrics, emphasized the unequivocal conclusion that vaccines do not cause autism and urged the CDC to cease disseminating misinformation that undermines the importance of routine immunizations for children’s health.
While the CDC has previously endorsed the lack of a link between vaccines and autism in its promotion of FDA-approved vaccines, the recent shift in messaging has raised questions about the involvement of individuals within the CDC, particularly given Robert F. Kennedy Jr.’s anti-vaccine stance since assuming office in the Department of Health and Human Services.
Dr. Debra Houry, a former CDC official, expressed surprise at the content alteration, noting that many CDC scientists were unaware of the change. The revised webpage fails to reference any new research but instead argues that previous studies supporting a vaccine-autism link have been disregarded by health authorities.
In response to the backlash, an HHS spokesperson stated that a comprehensive assessment of autism causes is underway, including investigations into potential biological mechanisms and causal links. Several ex-CDC officials have raised doubts about the credibility of CDC communications on certain topics, such as vaccine safety, with Dr. Daniel Jernigan highlighting concerns about the shift from evidence-based decision-making to decision-based evidence-making under Kennedy’s leadership.