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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:

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?

IOM report Review of the possible link between the use of the Measles, Mumps, and Rubella (MMR) vaccine and autism including:
  • Reason the IOM report was done
  • Conclusions of the IOM report
  • Recommendations of IOM report
  • CDC (HHS') position on the IOM report
  • Link to actual IOM report
Letter Letter from the Director of the National Immunization Program (NIP), Walter Orenstein to the Chief Medical Officer in the United Kingdom (U.K.), Sir Liam Donaldson. Letter reaffirms our scientific and medical support for the safety and use of combined MMR vaccine.
 pdf iconLetter (20K) (Feb. 19, 2002)
Screen-reader device icon Letter (version for screen-reader devices only) (8K)
       
Facts About 
Autism

General fact sheet on:

  • Definition of autism

  • Causes of autism
  • Sources for further information
Autism Prevalence

Fact sheet on autism prevalence including:

  • what is known about the prevalence of autism

  • recent prevalence studies

  • prevalence rates from U.S. studies

  • data from service providers

  • what is being done to determine how many individuals have autism, etc.

FAQs (Frequently Asked Questions
on Autism		 FAQs sheet on Autism: answering the following questions:
  1. What are autism spectrum disorders?
  2. What is known about the prevalence of autism?
  3. How many people in U.S. have autism?
  4. Is the prevalence of autism increasing?
  5. What is being done to determine how many individuals have autism?
  6. What do we know about the causes?
  7. What medications are available?
  8. What other treatments are available?
CDC’s autism research efforts Studies that CDC is conducting about autism including:
  • Monitoring of Autism Prevalence
  • Autism Monitoring and Intervention Project, West Virginia
  • Immunizations and Autism
  • Immunizations and Possible Developmental Regression
  • Inflammatory Bowel Disease and MMR Vaccination
  • Thimerosal and Risk of Autism
Inflammatory Bowel Disease and Measles Vaccine Fact Sheet Key messages, facts, and additional sources of information on MMR vaccine and autism
Inflammatory
Bowel Disease 
and MMR
theory

Answers the following questions:

  1. What is IBD?
  2. What causes IBD?
  3. What about studies suggesting association between measles vaccine and IBD?
  4. Is there scientific evidence to show there is no association between measles vaccine and IBD?
  5. What does CDC recommend for MMR vaccine?
References
 		References on autism, Inflammatory Bowel Disease (IBD), and the study of autism and vaccines.

 

 

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This page last modified on May 23, 2002
   
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ALL INFORMATION, DATA, AND MATERIAL CONTAINED, PRESENTED, OR PROVIDED HERE IS FOR GENERAL INFORMATION PURPOSES ONLY AND IS NOT TO BE CONSTRUED AS REFLECTING THE KNOWLEDGE OR OPINIONS OF THE PUBLISHER, AND IS NOT TO BE CONSTRUED OR INTENDED AS PROVIDING MEDICAL OR LEGAL ADVICE.  THE DECISION WHETHER OR NOT TO VACCINATE IS AN IMPORTANT AND COMPLEX ISSUE AND SHOULD BE MADE BY YOU, AND YOU ALONE, IN CONSULTATION WITH YOUR HEALTH CARE PROVIDER.