Table 3. Putative risk factors for case-patients with newly diagnosed multidrug-resistant TB in 7 major genotype clusters, Argentina 2003–2009.
| Cluster (SIT)* | Area | Total no. case-patients | Risk factor, no. (%) case-patients |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Previously treated for TB | HIV positive | HCWs | Other hospital exposure† | Prison | Household exposure | Unknown | |||
| M H2 (2) | Buenos Aries | 228 | 78 (34.2) | 116 (50.9) | 21 (9.2) | 38 (16.7) | 23 (10.1) | 29 (12.7) | 19 (8.3) |
| Ra LAM3 (33) | Rosario | 89 | 40 (44.9) | 28 (31.5) | 2 (2.2) | 10 (11.2) | 17 (19.1) | 16 (18.0) | 14 (15.7) |
| Rb Tuscany (159) | Buenos Aries, Rosario | 38 | 11 (28.9) | 22 (57.9) | 0 (0.0) | 1 (2.6) | 0 (0.0) | 13‡ (34.2) | 6 (15.8) |
| Pr LAM9 (42) | Buenos Aries | 26 | 10 (38.5) | 10 (38.5) | 0 (0.0) | 2 (7.7) | 15 (57.7) | 5 (19.2) | 2 (7.7) |
| At T1 (53) | Atlantic Coast | 21 | 9 (42.9) | 7 (33.3) | 1 (4.8) | 3 (14.3) | 2 (9.5) | 7 (33.3) | 2 (9.5) |
| Ob LAM5 (725) | Buenos Aries | 18 | 7 (38.9) | 4 (22.2) | 0 (0.0) | 2 (11.1) | 3 (16.7) | 5 (27.8) | 2 (11.1) |
| Os LAM5 (93) | Salta | 18 | 7 (38.9) | 6 (33.3) | 0 (0.0) | 3 (16.7) | 1 (5.6) | 9 (50.0) | 2 (11.1) |
*Sum does not equal total because of patients with more than one risk factor. Buenos Aires includes the city and surroundings. MDR, multidrug-resistant; TB, tuberculosis; SIT, Shared International Spoligo Type according to Brudey et al. (13); HCW, health care workers. †Previous hospitalization(s) or concomitant condition. ‡Ten of these case-patients shared a single residence with transvestite sex workers.