drug susceptibility testing (DST)
Drug susceptibility testing and mortality in patients treated for tuberculosis in high-burden countries: a multicentre cohort study
Tuberculosis is now the world's commonest cause of death from infectious disease. The ominous spread of multidrug-resistant (MDR) and extensively drug-resistant (XDR) tuberculosis, and the scarce treatment options available, are priority global health issues. With a global estimate in 2014 of 450 000 cases of MDR and XDR tuberculosis causing 150 000 deaths, and the continuing spread, the WHO End TB Strategy highlights the threat that MDR and XDR tuberculosis pose to global public health security.