The following standards and related specifications were identified as the recommended approach to support the in-scope requirements. The table lists the summary with the rationale.
Standardization Requirement | Options | Choice | Rationale |
Messaging | Immunization HL7 V3.0 | X | The specification was designed to meet the in-scope use cases and conforms with the architectural design of Canada's digital health blueprint. |
CeRx 4.4 HL7 V3.0 |
| The CeRx specification has been superseded by the Immunizations Specification for vaccine event messaging. | |
| HL7 v2 | Inconsistent with Canada's blueprint. No known implementations in Canada. |