Abstract
Tuberculosis (TB) is a major global public health problem and is the leading cause of death linked to a single pathogen, ranking above human immunodeficiency virus (HIV).1 Clinically, TB has been categorised as active disease (patients who are generally symptomatic and may be infectious if pulmonary involvement is present) and latent infection (asymptomatic and not infectious, but at variable risk for progression to active TB disease). It is increasingly being recognised that latent TB infection (LTBI) reflects diverse responses to infection with Mycobacterium tuberculosis and may lead to heterogeneous clinical outcomes. In an expert interview, Jean-Pierre Zellweger discusses the latest World Health Organisation (WHO) guidelines on the management of LTBI.
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