Important Requirements
To do: Review FHIR requirements & considerations / insights https://www.hl7.org/fhir/immunization.html
Configurability. Immunization “schedules” are like “Timings”: A place’s immunization schedule shows “when a certain immunization is meant to be given, and how many times, after how long of intervals.” These Schedules are often different by country, state/province, region, or even organization (I know, it’s surprising it’s not the same world-wide!). This means this feature will need to be very configurable.
