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Comment & Response
January 12, 2016

Correction of Description of MMR Vaccine Receipt Coding and Minor Errors in MMR Vaccine and Autism Study

Author Affiliations
  • 1The Lewin Group, Falls Church, Virginia
  • 2Optum, Eden Prairie, Minnesota
  • 3A. J. Drexel Autism Institute, Drexel University, Philadelphia, Pennsylvania
JAMA. 2016;315(2):202-204. doi:10.1001/jama.2015.17065

To the Editor This letter is in reference to our article “Autism Occurrence by MMR Vaccine Status Among US Children With Older Siblings With and Without Autism,” which was published in the April 21, 2015, issue of JAMA.1

We recently undertook a review of this report and discovered an incorrect description of when the measles-mumps-rubella (MMR) vaccine was received. As detailed below, correcting this error, as well as other minor errors, did not have a material effect on the findings of the study and the conclusion remains that the MMR vaccination was not associated with an increased risk of autism spectrum disorders (ASD).

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