Key information types to be shared in the EHRi Public Health Domain are text-based Reportable Diseases and Immunizations. These are communicated between PHS PoS applications and jurisdictional Immunization systems via structured HL7 messages from Public Health labs and Immunization Management systems.

PHS Immunization Management (IM) has three parts:

1. IM Health Surveillance user function;

2. IM “supply chain” (serum and antiviral sources, inventory, distribution);

3. IM “clinical” (where immunization service events are recorded)

IM Clinical events can occur in multiple settings, performed by different providers (PH Nurse, Physician or Nurse in a primary care or hospital setting, etc.), using different systems: i.e., PHS IM System, Physician Office EMR system, Acute Care (Hospital) system; IM-CL is therefore a combination of IM “reporting” from PoS applications (directly or via EHR & domain repositories) and an IM-specific PoS application.

It is expected that these types of functions will be available in commercial PHS software applications and can be accessed using generic Portal technologies rather than separate interfaces.

Relations
Name	Type	Begins	Ends
	generalization	PHS Reporting	Ancillary Data and Services