As of April 2025, ** percent of Democrats and ** percent of Independents had heard or read about the false claim that the measles, mumps, rubella vaccines (MMR) vaccines have been proven to cause autism in children. This statistic displays the share of U.S. adults who had heard or read the false claim that the MMR vaccine causes autism, by party ID.Â
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KFF. (April 22, 2025). Share of Americans who have heard or read the claim that MMR vaccines cause autism in children as of April 2025, by party ID [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/1612852/americans-aware-of-mmr-autism-claim-by-party-id/
KFF. "Share of Americans who have heard or read the claim that MMR vaccines cause autism in children as of April 2025, by party ID." Chart. April 22, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/1612852/americans-aware-of-mmr-autism-claim-by-party-id/
KFF. (2025). Share of Americans who have heard or read the claim that MMR vaccines cause autism in children as of April 2025, by party ID. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/1612852/americans-aware-of-mmr-autism-claim-by-party-id/
KFF. "Share of Americans Who Have Heard or Read The Claim That Mmr Vaccines Cause Autism in Children as of April 2025, by Party Id." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 22 Apr 2025, /statistics/1612852/americans-aware-of-mmr-autism-claim-by-party-id/
KFF, Share of Americans who have heard or read the claim that MMR vaccines cause autism in children as of April 2025, by party ID ÌÇÐÄÆƽâ°æ, /statistics/1612852/americans-aware-of-mmr-autism-claim-by-party-id/ (last visited July 31, 2026)
Share of Americans who have heard or read the claim that MMR vaccines cause autism in children as of April 2025, by party ID [Graph], KFF, April 22, 2025. [Online]. Available: /statistics/1612852/americans-aware-of-mmr-autism-claim-by-party-id/
