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Volume 18, Number 11—November 2012

Research

HIV Infection and Geographically Bound Transmission of Drug-Resistant Tuberculosis, Argentina

Viviana RitaccoComments to Author , Beatriz López, Marta Ambroggi, Domingo Palmero, Bernardo Salvadores, Elida Gravina, Eduardo Mazzeo, Susana Imaz, Lucía Barrera, and National TB Laboratory Network
Author affiliations: Instituto Nacional de Enfermedades Infecciosas ANLIS “Dr. Carlos G. Malbrán,” Buenos Aires, Argentina (V. Ritacco, B. López, E. Mazzeo, L. Barrera); Hospital “Dr. F.J. Muñiz,” Buenos Aires (M. Ambroggi, D. Palmero); Programa Provincial de Tuberculosis, Santa Fe, Argentina (B. Salvadores); Hospital Zonal General Agudos “Dr. Diego Paroissien,” La Matanza, Argentina (E. Gravina); and Instituto Nacional de Enfermedades Respiratorias “Dr. Emilio Coni” ANLIS “Dr Carlos G Malbran,” Santa Fe (S. Imaz)

Main Article

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.

Main Article

1Additional members of the National TB Laboratory Network who contributed data are listed at the end of this article.

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