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 | Implementation | Vendor Support | Canadian | SDO | Complexity | Standard | Training, Support and Tooling | |
CeRx 4.4 HL7 V3.0 | Production in Canada | Yes | Yes | High | ||||
HLv2 | Not used | No | Yes | High | ||||
Architectural Constraints and Considerations | Secondary Benefits | |||||||
The Canadian HL7 V3 CeRx specification was designed to support the in scope use cases in a manner consistent with the design principles of Canada's digital health blueprint. | 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 CeRx implementers use the CeRx 4.4 specification for immunization messaging. | The specification was designed to meet the in-scope use cases and conforms with the architectural design of Canada's digital health blueprint. |