We will change Scope and Usage to say: This resource covers the administration of all medications and vaccines .  Please refer to the Immunization r esource-/Profile- for the treatment of vaccines. Boundaries and Relationships will be modified: MedicationAdministration is intended for tracking the administration of non-vaccine medications. Administration of vaccines is intended to be handled using the Immunization resource. Some systems treat immunizations in the same way as any other medication administration. Such systems SHOULD use an immunization resource to represent these. However, i f systems need to use a MedicationAdministration resource to capture vaccinations for workflow or other reasons, a MedicationAdministration resource may be used but systems SHOULD also create and expose an equivalent Immunization instance.