← Directory
Scientific controversy
Vaccine–autism linkAtlas
Health & Medicine · Vaccines & immunization
Competing accounts of whether routine childhood vaccines contribute to autism diagnoses, weighing large epidemiologic comparisons against subgroup and timing-based clinical claims.
Open the caseDocumented9
- Documented · A 1998 Lancet case-series paper linked MMR vaccination timing with intestinal symptoms and developmental regression in a small group of children and became the central citation for vaccine–autism claims.
- Documented · Autism diagnostic criteria and awareness have changed across recent decades.
- Documented · CDC maintains public pages addressing vaccines and autism research summaries.
- Documented · Congressional critics have sought investigations of National Academies processes and funding in contexts that include immunization-safety authority and public trust.
- Documented · Large cohort studies comparing autism rates by vaccination status have been published in major journals.
- Documented · Major pediatric and vaccine-safety centers summarize the epidemiologic literature as finding no causal association between MMR vaccination and autism.
- Documented · National Academies-style reviews have repeatedly examined immunization safety questions.
- Documented · The Lancet fully retracted the 1998 MMR–autism paper after ethics, method, and undisclosed-conflict findings, and the paper’s lead author lost his UK medical license.
- Documented · Thimerosal was removed from most routine U.S. childhood vaccines as a precaution while separate research on mercury-containing preservatives and neurodevelopment continued.
Official1
- Official · CDC public vaccine-safety pages state that studies have shown no link between vaccines or vaccine ingredients and autism spectrum disorder.
Contested3
- Contested · Critics of the mainstream consensus argue that population cohort designs can miss susceptible subgroups, timing windows, or ingredient-specific effects.
- Contested · Recent alterations and restorations of CDC autism-and-vaccines web language have been cited by scientists and advocates as evidence that institutional messaging itself is now part of the dispute.
- Contested · Vaccine-injury compensation forums have adjudicated numerous autism-as-vaccine-injury claims, producing a contested public record of wins, losses, and settlement interpretations.