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Metrics: Complete
Définition
The code system can represent any vaccination given anywhere in the world to any person currently living.
Rationale
A universally applicable system ensures that any individual's vaccination history can be integrated, regardless of the origin.
Possible measure
The total number of codes needed to represent all existing legacy vaccines, plus any vaccine trail representing a class of vaccines rather than an actual product, is not known ex ante.
The most comprehensive among the existing code systems, NUVA (enriched continuously over the last decade and field proven at a large scale) currently includes 917 codes. Based on current trends, we can make an educated guess that the total number should be in the range of 1200 codes. We will use this value as the basis for the exhaustiveness indicator, as the percentage of the 1200 codes covered by a given code system.