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Vaccine Safety > Issues of Interest > Autism
Vaccines and Autism Theory

At a glance:  The weight of currently available scientific evidence does not support the hypothesis that vaccines cause autism. We recognize there is considerable public interest in this issue, and therefore support additional research regarding this hypothesis. CDC is committed to maintaining the safest, most effective vaccine supply in history.

Jump to descriptions and links for these topics:

Autism information
HHS' Autism site which includes information on Frequently Asked Questions, Symptoms/ Diagnosis, Treatment/Therapy, Genetics, Clinical Trials, Autism and Vaccines, Resources for Parents, Information for Children, Press Releases, Research, State Agencies, and Other Sites with Autism Information

MMR vaccine and autism Fact Sheet

Key messages, facts, and additional sources of information on MMR vaccine and autism
FAQs on
theory of
MMR vaccine
and autism

Frequently Asked Questions on the hypothesis of MMR and Autism answering the following questions:

  1. What is autism?
  2. Does MMR vaccine cause autism? 
  3. What have studies found?
  4. Are there studies that suggesting a connection?
  5. What about claim that autism numbers have been increasing ever since MMR vaccine in use? 
  6. Would it be safer to separate the MMR vaccine into its individual components?
  7. Should a younger sibling of an autistic child, or a child of someone who has autism be vaccinated with MMR or other vaccines?
  8. Should we delay vaccination until we know more about the negative effects of vaccines?
CDC research on vaccines and autism

Key Messages and answers to questions about CDC research into possible links between thimerosal in childhood vaccines and neurodevelopmental disorders such as autism

IOM reports Review the most recent and past IOM reports on the theory of the possible link between the use of the Measles, Mumps, and Rubella (MMR) vaccine and autism including:
  • Primary conclusions of IOM reports
  • Recommendations of IOM reports
  • Links to actual IOM reports
CDC's autism site

General information about autism and CDC's autism research:

  • Definition of autism
  • Causes of autism
  • Sources for further information
References References on autism, Inflammatory Bowel Disease (IBD), and the study of autism and vaccines.


Other Organizations:


Supporting Information:

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This page last modified on July 28, 2005
This page last reviewed on May 18, 2004


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