Concept Design Approach for Multiple Doses - Immunisation, Treatment etc

Implementing Terminology
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@ball @ddesimone as hinted here and here you have modelled an immunization as a group of three obs:

  1. The actual vaccination given - CIEL:984
  2. The sequence number (dose 0, 1, 2, …) - CIEL:1418
  3. The vaccination date - CIEL:1410

Wondering if you are anticipating the addition of two more members: 1) vaccination lot number and 2) vaccination lot expiry date in order to comply (at least in part) with ‘The Drug Supply Chain Security Act and 2D Vaccine Barcodes’ (CDC ref. here) and to enable “tracking and tracing”.

Cc @jesplana @rrameshbtech

Another question, why is CIEL:984 a ConvSet? Looks like this would mean that one immunization could involve multiple given vaccines then?