Volume 18, Number 11—November 2012
Research
HIV Infection and Geographically Bound Transmission of Drug-Resistant Tuberculosis, Argentina
Table 4
Resistance of Mycobacterium tuberculosis isolates in 7 major clusters to antimicrobial drugs in addition to isoniazid and rifampin, Argentina, 2003–2009*
Cluster | Total no. isolates | No. (%) isolates with additional resistance to |
|||
---|---|---|---|---|---|
0 drugs | 1 drug | 2 drugs | >3 drugs | ||
M | 228 | 2 (0.9) | 13 (5.7) | 30 (13.2) | 183 (80.3) |
Ra | 89 | 8 (9.0) | 61 (68.5) | 15 (16.9) | 5 (5.6) |
Rb | 38 | 26 (68.4) | 6 (15.8) | 4 (10.5) | 2 (5.3) |
Pr | 26 | 26 (100) | 0 | 0 | 0 |
At | 21 | 6 (28.6) | 5 (23.8) | 6 (28.6) | 4 (19.0) |
Ob | 18 | 13 (72.2) | 0 | 3 (16.7) | 2 (11.1) |
Os | 18 | 0 | 2 (11.1) | 5 (27.8) | 11 (61.1) |
*Additional drugs tested were streptomycin, ethambutol, pyrazinamide, kanamycin, amikacin, capreomycin, and ofloxacin.
1Additional members of the National TB Laboratory Network who contributed data are listed at the end of this article.