Table 2. Resistance to first-line drugs in Mycobacterium tuberculosis isolates, Belarus, 2010–2011.

Resistance	Isolates from new cases (n = 934)			Isolates from previously treated cases (n = 410)			All isolates (n = 1344)
	No.	% (95% CI)		No.	% (95% CI)		No.	% (95% CI)
Any first-line drug	458	49.0 (46.2–51.9)		335	81.7 (78.5–84.5)		793	59.0 (56.7–61.3)
Isoniazid	377	40.4 (37.6–43.2)		319	77.8 (74.4–80.9)		696	51.8 (49.5–54.1)
Rifampicin	307	32.9 (30.3–35.6)		316	77.1 (73.7–80.2)		623	46.4 (44.1–48.7)
MDR-TB	302	32.3 (29.7–35.0)		310	75.6 (72.1–78.8)		612	45.5 (43.2–47.9)
Ethambutol	217	23.2 (20.9–25.7)		227	55.4 (51.5–59.2)		444	33.0 (30.9–35.3)
Streptomycin	421	45.1 (42.3–47.9)		329	80.2 (77.0–83.1)		750	55.8 (53.5–58.1)

CI, confidence interval; MDR-TB, multidrug-resistant tuberculosis.