We expanded second-line tuberculosis (TB) drug susceptibility testing for extensively drug-resistant Mycobacterium tuberculosis isolates from South Africa.Of 19 patients with extensively drug-resistant TB identifi ed during February 2008-April 2009, 13 (68%) had isolates resistant to all 8 drugs tested.This resistance leaves no effective treatment with available drugs in South Africa. The StudyThis study was conducted in Tugela Ferry, South Africa, where TB incidence is ≈1,100 cases/100,000 population and >80% of TB case-patients are HIV infected.
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Shah et al. (2011) studied this question.
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