Extensively Drug-Resistant Tuberculosis in South Korea: Risk Factors and Treatment Outcomes among Patients at a Tertiary Referral Hospital

Abstract

XDR TB was found to be associated with the cumulative duration of previous treatment with second-line TB drugs among subjects in a tertiary care TB hospital. Patients with XDR TB were more likely to not respond to therapy, and successful conversion of sputum culture results to negative was correlated with initial susceptibility to both fluoroquinolones and kanamycin but not to streptomycin.