DoubleChecks

What was claimed

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

Our verdict

Accurate

A large US cohort study found no association between first MMR vaccination before 24 months and childhood autism. The main estimate was near null and did not show increased risk.

All 3 AI systems agree19 sources citedChecked Aug 7, 2026

Check your own claim

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

Key findings

A large US study suggests no link between MMR vaccination before 24 months and autism.

Verified94%
All 5 AIs agree

The study is large

Verified98%
1 AI checked

The study is from the US

Verified98%
1 AI checked

The study is recent (implied by 'suggests')

Verified98%
1 AI checked

Verified against 19 sources

pubmed.ncbi.nlm.nih.govcidrap.umn.edupmc.ncbi.nlm.nih.govchop.edunejm.orgpmc.ncbi.nlm.nih.govncbi.nlm.nih.govhouse.mn.govautismspeaks.orgcdc.govpubmed.ncbi.nlm.nih.govacpjournals.orgpubmed.ncbi.nlm.nih.govpubmed.ncbi.nlm.nih.govimmunize.orgpmc.ncbi.nlm.nih.govpubmed.ncbi.nlm.nih.govpmc.ncbi.nlm.nih.govncbi.nlm.nih.gov

Detailed Analysis

The claim is supported by a large, recent US cohort study that found no association between first MMR vaccination before age 2 and autism. The study reports near-null hazard ratios across age windows and a negative control analysis, which strengthens the conclusion.

Why this verdict

  • The claim is supported by a large, recent US cohort study that found no association between first MMR vaccination before age 2 and autism.
  • The study reports near-null hazard ratios across age windows and a negative control analysis, which strengthens the conclusion.

Claims checked

large US study suggests

Verified97%
The cited source is a large national retrospective cohort study of more than 2.5 million children. That matches the wording that a large US study suggests this finding.

No link between MMR vaccination before age 2 and autism

Verified98%
A large US cohort study found no association between first MMR vaccination before 24 months and childhood autism. The main estimate was near null and did not show increased risk.

What other AI think

The headline accurately describes a large, recent US study published in July 2026 that found no association between MMR vaccination before age 2 and autism. The study examined 2.5 million children and is consistent with decades of scientific evidence on this topic.

Why this verdict

  • The headline accurately describes a large, recent US study published in July 2026 that found no association between MMR vaccination before age 2 and autism.
  • The study examined 2.5 million children and is consistent with decades of scientific evidence on this topic.

Claims checked

There is no link between MMR vaccination before age 2 and autism

Verified95%
A 2026 study found that the first MMR vaccination was not associated with an increased risk of autism, and across all age-specific cohorts, there was no association between the vaccine and increased risk of autism. This finding is consistent with extensive prior research.

The study is large

Verified98%
The study examined the records of 2,560,035 children, making it a substantial cohort study.

The study is from the US

Verified98%
The study was conducted by researchers from University of Washington Medicine, Seattle, using the Cosmos electronic health record database, confirming it is a US-based study.
Multiple large, high-quality studies and public health agencies report no association between MMR vaccination and autism. A recently reported large U.S. electronic-health-record cohort analysis also found no increased autism risk for children vaccinated before 24 months. These findings align with long-standing scientific consensus.

Why this verdict

  • Multiple large, high-quality studies and public health agencies report no association between MMR vaccination and autism.
  • A recently reported large U.S.
  • electronic-health-record cohort analysis also found no increased autism risk for children vaccinated before 24 months.
  • These findings align with long-standing scientific consensus.

Claims checked

A large US study suggests no link between MMR vaccination before 24 months and autism.

Verified85%
Recent reports describe a large U.S. EHR-based cohort (millions of children) with analyses showing no increased autism risk for MMR administered before age 2, consistent with prior evidence, though individual preprint/publication details should be checked for final peer-reviewed results.

No link between MMR vaccination before age 2 and autism.

Verified95%
Numerous large cohort and case–control studies and public health agencies (CDC, AAP) find no association between MMR vaccination and autism; this is the longstanding scientific consensus.

Share this result

Try DoubleChecks