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Table 2 Primary and secondary drug resistance pattern to first-line anti-TB drugs among culture positive pulmonary TB cases in Hitossa District, Arsi Zone of Oromia Region, Central Ethiopia 2015

From: Primary and secondary anti-tuberculosis drug resistance in Hitossa District of Arsi Zone, Oromia Regional State, Central Ethiopia

Drug resistance pattern New cases (N = 85) Re-treated cases (N-21) Total (N = 106)
n (%) (95 % CI) n (%) (95 % CI) n (%) 95 % CI
Any R to one drug 13 (15.2 % (7.6–22.8) 11 (52.3: 30.9–73.7) 24 (22.6: 14.6–30.6)
Any INH 8 (9.4 %) 6 (28.6) 14 (13.2)
Any RIF 4 (4.7) 4 (19.0) 8 (7.5)
Any STM 8 (9.4) 5 (23.8) 13 (12.3)
Any EMB 3 (3.5) 2 (9.5) 5 (4.7)
Mono resistance 4 4 8
Only INH 2 (2.4) 1 (4.8) 3 (2.8)
Only RIF 0 0 0
Only STM 2 (2.4) 2 (9.5) 4 (3.8)
Only EMB 0 1 (4.8) 1
Two-drug resistance 7 4 11
INH + RIF 1 (1.2)* 1 (4.8) 2 (1.9)*
INH + ETM 1 (1.2) 0 1 (0.9)
INH + STM 2 (2.4) 2 (9.5) 4 (3.8)
RIF + EMB 0 0 0
RIF + STM 2 (2.4) 1 (4.8) 3 (2.8)
ETM + STM 1 (1.2) 0 1 (0.9)
Three or more-drug resistance 2 3 5
INH + RIF + EMB 0 0 0
INH + RIF + STM 1 (1.2)* 2 (9.5) 3 (2.8)*
INH + EMB + STM 1 (1.2) 0 1 (0.9)
RIF + ETM + STM 0 0 0
INH + RIF + EMB + STM 0 1 (5.9) 1 (0.9)
MDR* 2 (2.4) 3 (14.3) 5 (4.7)
  1. NB: MDR-TB* is multi-drug resistant TB