Friday, Jul 24, 2026 The claims desk. Receipts included. POWERED BY LENZ ↗
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HEALTH

The Claim

The MMR (measles, mumps, and rubella) vaccine causes autism in children.

Verified by Lenz ·

The Short Version

This claim is false. The sole study linking MMR to autism (Wakefield, 1998) was retracted by The Lancet for deliberate fraud. Since then, overwhelming scientific evidence — including WHO's 2025 review of 31 studies, a Cochrane review of 23 million children, and a meta-analysis of 1.25 million children — consistently finds no causal link between the MMR vaccine and autism. Every major health authority (WHO, AAP, National Academies) confirms vaccines do not cause autism.

Caveats

  • The original 1998 Wakefield study was fully retracted for deliberate fraud, ethical violations, and scientific misrepresentation — it provides no credible evidence for this claim.
  • Asserting that MMR causes autism relies on a discredited source while ignoring an overwhelming body of high-quality evidence to the contrary, constituting cherry-picking of debunked data.
  • Autism is a neurodevelopmental condition with strong genetic components and origins before one year of age, often predating typical MMR administration — the temporal coincidence does not imply causation.

The Receipts

  1. WHO expert group's new analysis reaffirms there is no link between vaccines and autism

    World Health Organization (WHO)

  2. Statement of the WHO Global Advisory Committee on Vaccine Safety (GACVS) on vaccines and autism - World Health Organization (WHO)

    World Health Organization (WHO)

  3. The MMR vaccine and autism: Sensation, refutation, retraction, and ...

    PMC (PubMed Central)

  4. The MMR Vaccine and Autism - PMC - NIH

    PMC - NIH

  5. National Academies - Statement on CDC's Updated Vaccine Guidance

    National Academies

  6. Fact Checked: Vaccines: Safe and Effective, No Link to Autism - AAP

    AAP

  7. Can MMR vaccines cause autism?

    Can MMR vaccines cause autism?

  8. MMR Vaccine Does Not Cause Autism -- Examine the evidence!

    Immunize.org

  9. Vaccines and autism | Children's Hospital of Philadelphia

    Children's Hospital of Philadelphia

  10. Journal Retracts Study Backing Vaccine-Autism Link | PBS News

    PBS News

+ 3 more sources — see the full list on Lenz

Filed Under

Andrew WakefieldAutism Spectrum Disorder (ASD)Centers for Disease Control and PreventionMMR vaccineThe LancetWorld Health Organization

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