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Extensively Drug-Resistant Tuberculosis
gen.	tuberculose ultrarésistante
health.	tuberculose à bacilles ultrarésistants
English thesaurus
extensively drug resistant tuberculosis XDR-TB
med.	A relatively rare type of multiple drug resistant tuberculosis MDR-TB. Extensively drug resistant tuberculosis XDR-TB occurs when a Mycobacterium tuberculosis strain becomes resistant to drugs used to treat TB, including the two most effective first-line antibiotics isoniazid and rifampin and most of the second-line drugs. XDR-TB progresses more rapidly and is more severe in people coinfected with HIV than in people infected with XDR-TB alone. see also multiple drug resistant tuberculosis, mycobacterium tuberculosis, tuberculosis