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. 2015 Apr 23;10(4):e0124260. doi: 10.1371/journal.pone.0124260

Table 5. Drug sensitivity patterns of PTB cases in Chennai.

Status New Cases Previously Treated Cases
n = 96 n = 24
Sensitive 79(82.3) 17(70.8)
Mono Drug Resistance
Isoniazid (H) 3(3.1) 1(4.2)
Rifampicin (R) 1(1.0) 1(4.2)
Ethambutol (E) 1(1.0) -
Streptomycin (S) 3(3.1) 2(8.3)
Resistance to more than one Drug (S+H,H+E) 4(4.2) 2(8.3)
Multi Drug Resistance (H+R, H+R+E, S+H+R+E) 5(5.2) 5(5.2)

H = Isoniazid, R = Rifampicin, S = Streptomycin, E = Ethambutol