HIV/AIDS Glossary

Multidrug-Resistant Tuberculosis (MDR-TB)

A form of tuberculosis (TB) that is resistant to at least the two most effective TB drugs (isoniazid and rifampin). People who have multidrug-resistant TB (MDR-TB) are at high risk for treatment failure. They are also at risk for further drug resistance, which can lead to a life-threatening disease—extensively drug-resistant tuberculosis (XDR-TB).

Related Term(s): Drug Resistance, Extensively Drug-Resistant Tuberculosis, Tuberculosis

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