Drug-resistant tuberculosis in Korea, 1994
OBJECTIVE: To determine the level of antituberculosis drug resistance (DR) and to assess its impact on treatment outcome and its relationship with cure rates in the National TB Programme (NTP).
DESIGN: Mycobacterium tuberculosis isolates from 2486 new patients and 189 previously treated patients were subjected to susceptibility testing against 10 antituberculosis drugs. Treatment outcome was assessed. The DR levels were compared with those observed in the national TB prevalence surveys, and the trend was correlated with the cure rate of patients treated in the NTP.
RESULTS: Resistance to any drug was 11.3% in new cases and 54.0% in previously treated cases. Initial resistance to isoniazid (INH) or rifampicin (RMP) was 7.7% or 2.2%, and to INH and RMP (± other drugs) 1.6%. Compared with previous data, initial drug resistance (IDR) has decreased significantly and is inversely related to improvement of cure rates in the NTP. The treatment outcome of patients with single drug resistance was satisfactory.
CONCLUSION: Drug-resistant TB has decreased remarkably during the last decades in Korea as a result of improved efficiency in the treatment programme of the NTP.
Document Type: Regular Paper
Affiliations: Korean Institute of Tuberculosis, Korean National Tuberculosis Association, Seoul, Korea
Publication date: 01 August 1997
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