This guide focuses on the selection of messaging standards to support the in scope use cases.

Messaging

The following standards were considered to communicate Vaccination Events and to Query Immunization Repositories.

 

Standard

Fit for Purpose

Stewardship

Quality

Fits
Requirements

Implementation
Type 

Vendor Support

Canadian
Steward

SDO
Maintained

Complexity

Standard
Maturity

Training,
Support
and Tooling

Immunization HL7 V3.0

Closely

Production
in Canada 

Only Jurisdictional Implementers

Yes

Yes

High

 

Med

Available

CeRx  HL7 V3.0

PartiallyProduction
in Canada 		MediumYesYesHighHighAvailable

HL7 v2 

Partially

No known implementations
in Canada 

High

No

Yes

Medium

High

Unknown

Architectural Constraints and Considerations

Secondary Benefits

The HL7 V3 immunization specification was designed to support the immunization use cases in a manner consistent with the design principles of Canada's digital health blueprint and supercedes the CeRx specification.

Version 3 uses rigorous analytic and message building techniques and eliminates areas of optionality that could negatively impact semantic interoperability.

Recommendation

Supporting Rationale

It is recommended that new implementations adopt Immunization HL7 V3.0 for immunization.The specification was designed to meet the in-scope use cases and conforms with the architectural design of Canada's digital health blueprint.
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