Incorporating therapeutic drug monitoring into the World Health Organization hierarchy of tuberculosis diagnostics

Tuberculosis (TB), once considered as a disease of the past generally afflicting poor people, still claims 1.5 million lives annually [1]. Although 86% of patients with drug susceptible TB are cured with established first-line drugs, treatment is often longer than 6 months due to slow response, compliance problems or adverse drug reactions. In addition, emergence of drug-resistant Mycobacterium tuberculosis strains with an unacceptably low treatment success rate of 50% and TB–HIV co-infection have challenged the goals of global TB control and elimination [1]. Incorporating therapeutic drug monitoring into the WHO hierarchy of tuberculosis diagnostics