Glossary
- Immunization Information System (IIS)
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An immunization information system (IIS) is a confidential, secure, computerized information system that consolidates and maintains immunization records and helps insure correct and timely immunizations.
Children typically are entered into the system at birth, often through a linkage with electronic birth records or at first contact with the health care system. If an IIS includes all children in a given geographical area and all providers are reporting immunization information, an IIS can provide a single data source for all community immunization partners. Such a population-based immunization registry can make it easier to carry out effective immunization strategies, and thereby decrease the resources needed to achieve and maintain high levels of coverage. An IIS can also be used to enhance adult immunization services and coverage.


