Table 2. Antimicrobial drug resistance profiles of variant serotypes of Shigella flexneri isolates recovered from patients with diarrhea, China, May 2008–December 2010*.
| Antimicrobial drug | % Resistant isolates |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| X variant (−:7,8, E1037), indole-negative variety, n = 73 |
Serotype 2 variant (II:3,4,7,8), n = 17 |
Untypeable variant (−:E1037), n = 2 |
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| R | I | S | R | I | S | R | I | S | |||||||
| Ampicillin | 100.0 | 0 | 0 | 100.0 | 0 | 0 | 100.0 | 0 | 0 | ||||||
| Ampicillin/sulbactam | 100.0 | 0 | 0 | 100.0 | 0 | 0 | 100.0 | 0 | 0 | ||||||
| Chloramphenicol | 100.0 | 0 | 0 | 100.0 | 0 | 0 | 100.0 | 0 | 0 | ||||||
| Nalidixic acid | 100.0 | 0 | 0 | 100.0 | 0 | 0 | 100.0 | 0 | 0 | ||||||
| Tetracycline | 100.0 | 0 | 0 | 100.0 | 0 | 0 | 100.0 | 0 | 0 | ||||||
| Amoxicillin/clavulanic acid | 91.8 | 5.5 | 2.7 | 88.2 | 0 | 11.8 | 100.0 | 0 | 0 | ||||||
| Trimethoprim/sulfa | 90.4 | 0 | 9.6 | 58.8 | 0 | 41.2 | 100.0 | 0 | 0 | ||||||
| Norfloxacin | 82.2 | 16.4 | 1.4 | 29.4 | 0 | 70.6 | 100.0 | 0 | 0 | ||||||
| Ciprofloxacin | 39.7 | 49.3 | 11.0 | 29.4 | 0 | 70.6 | 100.0 | 0 | 0 | ||||||
| Levofloxacin | 21.9 | 26.0 | 52.1 | 17.6 | 11.8 | 70.6 | 0 | 50.0 | 50.0 | ||||||
| Cefotaxime | 13.7 | 13.7 | 72.6 | 17.6 | 5.9 | 76.5 | 0 | 0 | 100.0 | ||||||
| Gentamicin | 6.8 | 0 | 93.2 | 5.9 | 0 | 94.1 | 0 | 0 | 100.0 | ||||||
| Ceftazidime | 5.5 | 2.7 | 91.8 | 0 | 0 | 100.0 | 0 | 0 | 100.0 | ||||||
| Imipenem | 2.7 | 0 | 97.3 | 0 | 0 | 100.0 | 0 | 0 | 100.0 | ||||||
*R, resistant; I, intermediate; S, susceptible.