The right answer is tuberculosis.
Tuberculosis is a clinical syndrome linked to infection with the bacillus of tuberculosis, during which the bacillus can be reduced to a quiescent state by the immune reaction for several years.
This latency or quiescence is defined by:
* the absence of clinical illness
* no abnormality on the chest X-ray
the positivity of immunological tests with respect to M. tuberculosis: IDR and / or IGRA.
