Enterprise HealthIISImmunization Information System
A confidential, population-based state registry that records immunization doses administered within its jurisdiction.
Key facts
- A confidential, population-based state vaccine registry.
- Consolidates doses so providers see a complete history.
- Bidirectional HL7 exchange keeps records authoritative.
What it means
An IIS — a state or regional immunization registry — consolidates vaccination records so providers can see a complete history and avoid duplicate doses. Bidirectional HL7 exchange lets an employee- or student-health system query and report doses, keeping immunization tracking authoritative and reducing the records-chasing that plagues onboarding.
Frequently asked
What is an IIS?
An Immunization Information System — a state or regional registry that records vaccine doses administered in its jurisdiction, giving providers a consolidated immunization history and avoiding duplicate doses.
How does a health system use an IIS?
Through bidirectional HL7 exchange, an employee- or student-health system queries and reports doses to the IIS, keeping immunization tracking authoritative and cutting onboarding records-chasing.
A certified, interoperable system of record.
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