Drug-resistance to tuberculosis remains a major public health threat. Here, we report two cases of extended-spectrum XDR (XXDR) tuberculosis, resistant to most first and second-line agents. Correlatio
Ethambutol (EMB) is a first-line antituberculosis drug currently being used clinically to treat tuberculosis. Mutations in the embCAB operon are responsible for EMB resistance. However, the discrepanc
