Table 4. Resistance to first-line anti-TB drugs among isolates from TB retreatment patients with positive sputum smears for whom DST results were available (n = 92).
| Resistance | Anti-TB drug | No. | % | 95% CI |
|---|---|---|---|---|
| Susceptibility to all four first-line drugs | 46 | 50 | 39.78–60.22 | |
| Resistant to single | Isoniazid | 4 | 4.35 | |
| drug | Rifampicin | 4 | 4.35 | |
| Streptomycin | 5 | 5.43 | ||
| Ethambutol | 2 | 2.17 | ||
| Total | 15 | 16.3 | 8.76–23.85 | |
| MDR | Rifampicin+Isoniazid | 13 | 14.13 | |
| Rifampicin+Isoniazid+ Streptomycin | 8 | 8.7 | ||
| Rifampicin+ Isoniazid+ Ethambutol | 1 | 1.09 | ||
| Rifampicin+Isoniazid+ Streptomycin +Ethambutol | 6 | 6.52 | ||
| Total | 28 | 30.44 | 21.03–39.84 | |
| Other drug resistance | Isoniazid+Streptomycin | 2 | 2.17 | |
| Rifampicin+Ethambutol | 1 | 1.09 | ||
| Total | 3 | 3.26 | 0–6.89 | |