Volume 18, Number 11—November 2012
Research
HIV Infection and Geographically Bound Transmission of Drug-Resistant Tuberculosis, Argentina
Viviana Ritacco
, Beatriz López, Marta Ambroggi, Domingo Palmero, Bernardo Salvadores, Elida Gravina, Eduardo Mazzeo, Susana Imaz, Lucía Barrera, and National TB Laboratory Network
, Beatriz López, Marta Ambroggi, Domingo Palmero, Bernardo Salvadores, Elida Gravina, Eduardo Mazzeo, Susana Imaz, Lucía Barrera, and National TB Laboratory NetworkTable 1
Patients with newly diagnosed multidrug-resistant TB, by year and genotype cluster, Argentina, 2003–2009
| Genotype | No. patients |
Total no. (%) patients | ||||||
|---|---|---|---|---|---|---|---|---|
| 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | ||
| Cluster M | 46 | 40 | 33 | 29 | 31 | 28 | 21 | 228 (29.0) |
| Cluster Ra | 13 | 6 | 19 | 12 | 15 | 14 | 10 | 89 (11.3) |
| Cluster Rb | 7 | 10 | 2 | 1 | 5 | 6 | 7 | 38 (4.8) |
| Cluster Pr | 4 | 5 | 4 | 4 | 1 | 3 | 5 | 26 (3.3) |
| Cluster At | 3 | 4 | 1 | 1 | 1 | 4 | 7 | 21 (2.7) |
| Cluster Ob | 2 | 1 | 5 | 5 | 0 | 1 | 4 | 18 (2.3) |
| Cluster Os | 1 | 4 | 3 | 5 | 0 | 2 | 3 | 18 (2.3) |
| Minor cluster* | 25 | 24 | 19 | 18 | 10 | 24 | 31 | 151 (19.2) |
| Unique | 23 | 33 | 29 | 27 | 30 | 29 | 27 | 198 (25.2) |
| Total | 124 | 127 | 115 | 102 | 93 | 111 | 115 | 787 (100.0) |
*A total of 45 minor clusters were identified during the study period, each consisting of <15 new patients with multidrug-resistant tuberculosis.
1Additional members of the National TB Laboratory Network who contributed data are listed at the end of this article.
