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Registries: Immunization Information Systems (IIS)
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Registries: Immunization Information Systems
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CDC does NOT have immunization record information. You must contact your provider or your local or state immunization program.  More...

For general immunization-related questions you also may contact the CDC Information Contact Center at 1-800-CDC-INFO (1-800-232-4636).

Contact Persons

Quesions & Answers


What are Immunization Information Systems?


Why do Immunization Information Systems exist?


Why should I enroll my child in IIS?


What information is in an IIS?

  Copies of records, privacy, moving, etc:

How is my child’s immunization record and information protected?


Who do I contact to see if my child is in an IIS or if I want a copy of my child’s immunization record?


What happens to my child’s immunization record when I move to another state?

  Cost and participation:

How much does it cost to participate in my State’s IIS?


How can I find out if my child’s doctor is participating in the IIS?


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*MMWR = Morbidity and Mortality Weekly Report

**Accessibility Note: Any links to .pdf files or presentations can be made available in text-only format for screen-reader devices. If you need this assistance, please contact

(exit site) = Link is outside of CDC site domain and opens in separate browser window.

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This page last modified on February 21, 2006


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