Volume 14, Number 3—March 2008
Dispatch
Ciprofloxacin-Resistant Salmonella enterica Serotype Typhimurium, China
Shenghui Cui*, Jingyun Li*, Ziyong Sun†, Changqin Hu*, Shaohong Jin*, Yunchang Guo‡, Lu Ran‡, and Yue Ma*
Table
Resistance phenotypes of Salmonella enterica serotype Typhimurium isolated from Tongji Hospital outpatients, Wuhan, China, May 2002–October 2005
| Antimicrobial agent | MIC, μg/mL* | No. resistant isolates (n = 44) |
|---|---|---|
| Phenicols (chloramphenicol) | >32 | 33 |
| Penicillins | ||
| Ampicillin | >32 | 35 |
| Amoxicillin–clavulanic acid | >32/16 | 32 |
| Cephalosporins | ||
| Cefepime | >32 | 0 |
| Cefotaxime | >64 | 0 |
| Ceftriaxone | >64 | 0 |
| Tetracyclines (tetracycline) | >16 | 36 |
| Aminoglycosides | ||
| Amikacin | >64 | 2 |
| Gentamicin | >16 | 35 |
| Kanamycin | >64 | 15 |
| Streptomycin† | NA | 40 |
| Sulfonamides and potentiated sulfonamides | ||
| Sulfamethoxazole | >512 | 39 |
| Trimethoprim-sulfamethoxazole | >4/76 | 36 |
| Quinolones and fluoroquinolones | ||
| Nalidixic acid | >32 | 36 |
| Ciprofloxacin | >4 | 31 |
*MICs were determined by the broth-microdilution method; results were interpreted in accordance with the interpretive standards of the Clinical and Laboratory Standards Institute (4).
†Resistance to streptomycin was determined by disk-diffusion method. NA, not applied.
