DoubleChecks

What was claimed

No link between MMR vaccination before age 2 and autism, large US study suggests

Our verdict

Accurate

The recent national cohort study of more than 2.5 million children found no association between first MMR vaccination before 24 months and autism. The PubMed abstract reports a near-null adjusted hazard ratio and concludes there is no association.

All 3 AI systems agree20 sources citedChecked Aug 9, 2026

Check your own claim

Paste any statement, headline, or AI answer — 3 independent AIs verify it in seconds, with sources.

Key findings

No link between MMR vaccination before age 2 and autism, large US study suggests

Verified96%
All 3 AIs agree

Verified against 20 sources

cidrap.umn.edupubmed.ncbi.nlm.nih.govchop.edupmc.ncbi.nlm.nih.govcdc.govnejm.orgncbi.nlm.nih.govautismsciencefoundation.orgpubmed.ncbi.nlm.nih.govautismspeaks.orgpmc.ncbi.nlm.nih.govacpjournals.orgimmunize.orghouse.mn.govhouse.mn.govreddit.compmc.ncbi.nlm.nih.govpmc.ncbi.nlm.nih.govpmc.ncbi.nlm.nih.govpubmed.ncbi.nlm.nih.gov

Detailed Analysis

The claim is supported by a large recent US cohort study that found no association between MMR vaccination before age 2 and autism. The study’s primary analysis and negative control analysis were both near null, and older studies and reviews point in the same direction.

Why this verdict

  • The claim is supported by a large recent US cohort study that found no association between MMR vaccination before age 2 and autism.
  • The study’s primary analysis and negative control analysis were both near null, and older studies and reviews point in the same direction.

Claims checked

A large US study suggests this finding.

Verified98%
The cited study is a national retrospective cohort study in the US with more than 2.5 million children. Its findings directly support the wording.

No link between MMR vaccination before age 2 and autism.

Verified99%
The recent national cohort study of more than 2.5 million children found no association between first MMR vaccination before 24 months and autism. The PubMed abstract reports a near-null adjusted hazard ratio and concludes there is no association.

What other AI think

A national retrospective cohort study of more than 2.5 million children found no association between receiving the MMR vaccine before age 2 years and having an autism diagnosis. The headline accurately reflects the study's findings and uses appropriate hedging language ("suggests") for observational research.

Why this verdict

  • A national retrospective cohort study of more than 2.5 million children found no association between receiving the MMR vaccine before age 2 years and having an autism diagnosis.
  • The headline accurately reflects the study's findings and uses appropriate hedging language ("suggests") for observational research.
Multiple large, well-conducted cohort studies find no association between MMR vaccination in early childhood and later autism. A recent large U.S. electronic health record cohort (about 2.56 million children) likewise reported no increased risk when first MMR was given before 24 months, consistent with longstanding evidence from Danish and other national cohort studies.

Why this verdict

  • Multiple large, well-conducted cohort studies find no association between MMR vaccination in early childhood and later autism.
  • A recent large U.S.
  • electronic health record cohort (about 2.56 million children) likewise reported no increased risk when first MMR was given before 24 months, consistent with longstanding evidence from Danish and other national cohort studies.

Claims checked

No link between MMR vaccination before age 2 and autism, large US study suggests

Verified92%
A recent U.S. EHR cohort study of roughly 2.56 million children reported no association between first MMR before 24 months and childhood autism, and this finding aligns with multiple prior large cohort and registry studies and public health agency conclusions that MMR is not linked to autism.

Share this result

Try DoubleChecks