The Colorado Medical Society is a member of the Colorado Chooses Vaccines coalition.

Colorado Chooses Vaccines is deeply concerned by the recent changes to the CDC’s Autism and Vaccines webpage, which now promotes the false claim that vaccines cause autism. This update is not based on scientific evidence. CDC career scientists did not initiate or endorse the change, and it contradicts more than three decades of research from the United States and around the world—spanning millions of children—that has consistently found the same thing: vaccines do not cause autism.

These changes come as both Colorado and the nation are experiencing an increase in vaccine-preventable diseases, including measles, pertussis, and influenza. Families need clear, reliable guidance to make informed decisions—especially about vaccines, which remain one of the most effective tools to protect children.

Colorado’s health professionals, public-health leaders, policymakers, and community organizations are working together to strengthen our immunization ecosystem and ensure families receive clear, evidence-based information. Colorado Chooses Vaccines was created to reinforce that work and help Coloradans navigate a rapidly changing federal vaccine landscape with confidence.

Colorado Chooses Vaccines stands with partners across the pediatric and autism communities, including the American Academy of Pediatrics, the American Academy of Family Physicians, and the Autism Science Foundation, among others, in calling for federal agencies to immediately restore accurate, evidence-based information, so families can make informed decisions grounded in evidence.

For clear, trustworthy information, Coloradans can start with Immunize Colorado’s fact sheet and the parent-led Vaccinate Your Family/Autism Science Foundation guide on autism and vaccines.