Most states in the U.S. have an immunization information system (IIS), also known as an immunization registry, that collects immunization data for individuals in each state or municipality (some large cities host their own IIS). Though registries serve many purposes, two primary goals of an IIS are to maintain an active record of a patient’s immunization history so that patients can receive appropriate vaccinations throughout their lifetime regardless of the site of administration, and for population-based surveillance of vaccination coverage to help control vaccine-preventable diseases. To learn more about state immunization registries and the scope of patient confidentiality with respect to those registries, please read our Fast Facts below.
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