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 | |
Immunization HL7 V3.0 | Production | Yes | Yes |
| Med | |||
CeRx HL7 V3.0 | Production in Canada | Yes | Yes | High | ||||
HLv2 | Not used | No | Yes | High | ||||
Architectural Constraints and Considerations | Secondary Benefits | |||||||
HL7 V3 Immunizations specification was designed to support the immunization use cases in a manner consistent with the design principles of Canada's digital health blueprint. The CeRx specification has been superseded by the Immunizations Specification for vaccine event messaging. | 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. |