FACT CHECK #JI8D7HUZ

WHAT WE FOUND

Multiple high-credibility medical and academic institutions, including the American Academy of Pediatrics (AAP), Johns Hopkins University, and the Mayo Clinic, state definitively that vaccines do not cause autism 1 7 8. Extensive research conducted over several decades, including a meta-analysis of over 1.2 million children, has consistently shown no causal link between immunizations and autism spectrum disorder 11 12. While a 2026 update from the CDC indicated a shift in institutional language regarding the strength of evidence for a negative claim 3, the National Medical Association (NMA) responded by clarifying that there remains no credible scientific evidence demonstrating that vaccines cause autism 4. Furthermore, investigations into early studies that originally suggested a link revealed that many children in those studies had already exhibited signs of autism before receiving vaccinations, and the original research was later retracted due to fraud and procedural flaws 7 10. Medical experts emphasize that autism is a complex disorder likely caused by a combination of genetic and environmental influences rather than vaccines 1 6.

SOURCES

1. 1 · aap.orgFACT-CHECKER
   Fact Checked: Vaccines: Safe and Effective, No Link to Autism

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2. 2 · pmc.ncbi.nlm.nih.govACADEMIC
   The myth of vaccination and autism spectrum - PMC - NIH

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3. 3 · cdc.govACADEMIC
   Autism and Vaccines | Vaccine Safety | CDC

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4. 4 · nmanet.orgACADEMIC
   NMA Statement on CDC Reviving Debunked Link Between Autism and Vaccines - National Medical Association

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5. 5 · cdphe.colorado.govACADEMIC
   Vaccines and autism: What Colorado families should know | Colorado Department of Public Health and Environment

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6. 6 · chop.eduACADEMIC
   Vaccines and autism | Children's Hospital of Philadelphia

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7. 7 · publichealth.jhu.eduACADEMIC
   Vaccines Do Not Cause Autism | Johns Hopkins | Bloomberg School of Public Health

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8. 8 · mayoclinichealthsystem.orgACADEMIC
   Autism-vaccine link debunked - Mayo Clinic Health System

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9. 9 · media.chop.eduACADEMIC
   Vaccine and Autism: What You Should Know Q&A

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10. 10 · npr.orgNEWS
    The history behind an enduring public health falsehood — that vaccines cause autism : NPR

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11. 11 · cspi.orgWEB
    Vaccines don’t cause autism. Here’s how we know

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12. 12 · autismspeaks.orgWEB
    Do vaccines cause autism? | Autism Speaks

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