National eligible, due, and overdue guidelines for immunization registries: draft recommendations from the Canadian Immunization Registry Network- Data Standards Task Group

The cornerstone of any immunization registry is its ability to evaluate whether an individual\'s immunization history is complete and up to date. This functionality is used to identify individuals who are in need of further immunization services, to generate recall/reminder notifications for immunizations, and to produce immunization coverage reports to evaluate immunization programs.

This document presents guidelines or “rules” drafted by the Data Standards Task Group of the Canadian Immunization Registry Network to assist developers of immunization registries to include immunization evaluation as a component of a registry\'s functionality. The rules presented are based on the schedule for vaccines recommended by the National Advisory Committee on Immunization (NACI). Where clear direction on the parameters was not available, for example, exact days between immunizations, other national and international rules or logic were considered to guide recommendations in Canada. In most cases, the recommended