Table 2.
Antimicrobial resistance of Shigella sonnei, 2006–2011.
| Antimicrobial agent | Resistant [% (n)] |
||||||
|---|---|---|---|---|---|---|---|
| 2006 (N = 19) | 2007 (N = 48) | 2008 (N = 89) | 2009 (N = 98) | 2010 (N = 33) | 2011 (N = 32) | Overall (N = 319) | |
| Ampicillin | 52.6 (10) | 81.3 (39) | 48.3 (43) | 77.6 (76) | 60.6 (20) | 87.5 (28) | 67.7 (216) |
| AMC | 52.6 (10) | 97.9 (47) | 39.3 (35) | 30.6 (30) | 0.0 (0) | 18.8 (6) | 40.1 (128) |
| Cefalotin | 52.6 (10) | 33.3 (16) | 15.7 (14) | 45.9 (45) | 27.3 (9) | 25.0 (8) | 32.0 (102) |
| Cefotaxime | 5.3 (1) | 14.6 (7) | 12.4 (11) | 30.6 (30) | 21.2 (7) | 3.1 (1) | 17.9 (57) |
| Gentamicin | 26.3 (5) | 8.3 (4) | 39.3 (35) | 34.7 (34) | 33.3 (11) | 78.1 (25) | 35.7 (114) |
| Nalidixic acid | 78.9 (15) | 95.8 (46) | 61.8 (55) | 76.5 (75) | 63.6 (21) | 87.5 (28) | 75.2 (240) |
| Norfloxacin | 26.3 (5) | 25.0 (12) | 4.5 (4) | 46.9 (46) | 0.0 (0) | 0.0 (0) | 21.0 (67) |
| Tetracycline | 73.7 (14) | 93.8 (45) | 58.4 (52) | 73.5 (72) | 72.7 (24) | 87.5 (28) | 73.7 (235) |
| SXT | 68.4 (13) | 72.9 (35) | 64.0 (57) | 65.3 (64) | 81.8 (27) | 71.9 (23) | 68.7 (219) |
AMC, amoxicillin/clavulanic acid; SXT, trimethoprim/sulfamethoxazole.