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5. Date of HIV related diagnoses
In general, the date for a definitive diagnosis is determined by the date in which the pathological specimen could be identified.
The date of a presumptive diagnosis is determined by the time of satisfying the (set of) corrersponding criteria.
If a presumptive diagnosis has been reported and for the same disease a definitive diagnosis is made later on (e.g. by a biopsy), the date of the diagnosis should not be changed.
A diagnosis can not be recorded in the database as both presumptive and definitive