Table 2

Prevalence of drug resistance among tuberculosis (TB) cases never or previously treated for TB

No history of previous treatmentHistory of previous treatment
First survey, 1998/1999Second survey, 2000First survey, 1998/1999Second survey, 2000
n (%)95% CIn (%)95% CIn (%)95% CIn (%)95% CI
Total tested683 (100)688 (100)115 (100)108 (100)
Fully sensitive599 (87.7)85.1–90.0610 (88.7)86.1–90.944 (38.3)29.7–47.357 (52.8)43.4–62.1
Any resistance84 (12.3)10.0–14.978 (11.3)9.1–13.971 (61.7)52.6–70.351 (47.2)37.9–56.6
Mono resistance65 (9.5)7.5–11.948 (7.0)5.2–9.116 (13.9)8.4–21.218 (16.7)15.5–24.6
INH20 (2.9)1.8–4.414 (2.0)1.2–3.36 (5.2)2.1–10.56 (5.6)2.3–11.2
RMP6 (0.8)0.3–1.83 (0.4)0.1–1.25 (4.3)1.6–9.46 (5.6)2.3–11.2
SM36 (5.3)3.8–7.127 (3.9)2.6–5.65 (4.3)1.6–9.45 (4.6)1.7–10.0
EMB3 (0.4)0.1–1.24 (0.6)0.2–1.40 (0.0)0.0–2.51 (0.9)0.0–4.5
INH+RMP resistance8 (1.2)0.5–2.28 (1.2)0.5–2.242 (36.5)28.1–45.626 (24.1)16.7–32.8
Any INH resistance38 (5.6)4.0–7.544 (6.4)4.7–8.453 (46.1)36.8–55.639 (36.1)27.5–45.5
Any RMP resistance15 (2.2)1.3–3.511 (1.6)0.8–2.855 (47.8)38.8–56.932 (29.6)21.6–38.7
  • INH: isoniazid

  • RMP: rifampicin

  • SM: streptomycin

  • EMB: ethambutol