multidrug-resistant tuberculosis is define as
Multidrug-resistant tuberculosis (MDR-TB) is defined as TB that is resistant to both isoniazid [INH] and rifampicin [RMP], two of the first-line drugs used in treating smear-positive pulmonary tuberculosis.ultidrug-Resistant TB (MDR-TB). Extensively drug-resistant tuberculosis (XDR-TB) is defined by the WHO as MDR-TB with additional resistance to any fluoroquinolone (FQ) and to at least one of three injectable second-line anti-tuberculosis drugs used in treatment (capreomycin [CPM], kanamycin [KM] or amikacin [AMK]).