Decades of extensive, independent research — including dozens of high-quality studies involving millions of children across multiple countries — continue to show the same result: vaccines, including the measles, mumps, and rubella (MMR) vaccine, do not cause autism.

These findings have been affirmed globally across different populations and research methods and are strongly supported by national disability organizations, public health experts, and health care professionals. Vaccines are carefully tested for safety and remain a critical tool in protecting children from serious infectious diseases.

Scientists are still working to better understand what causes autism. Current research shows there is no single cause; instead, autism likely results from a combination of genetic and environmental factors. What is clear is that autism involves differences in how the brain develops and functions — not something caused by vaccination.

Myths linking vaccines to autism are not supported by evidence. These narratives can be harmful, as they reinforce the misconception that autism is something to be “prevented,” rather than a natural variation in human development. They also distract from what autistic people and their families consistently identify as most important: access to support, acceptance, inclusion, and services that honor each person’s strengths and needs.

For more information, visit The Truth About Autism and Vaccines - Vaccinate Your Family