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IIS Assessment Aggregate Status Report - Data at Rest (DAR)
Issued on January 23, 2026 by AIRA
The measurement process for Data at Rest (DAR) uses the National Institute of Standards and Technology (NIST) Immunization Test Suite Validation Tool. This tool provides consistent conformance-based results for all measured IIS. In addition, the technical requirements for data quality are documented in the HL7 Version 2.5.1: Implementation Guide for Immunization Messaging, Release 1.5 and addendum. This is referred to as the National IG.