Volume 13, Number 3—March 2007
Letter
CTX-M Extended-spectrum β-Lactamases, Washington State
Seonghan Kim*, Jinxin Hu*, Romesh Gautom*, Junyoung Kim†, Bokkwon Lee†, and David S. Boyle*
Table
MICs of antimicrobial drugs for Shigella sonnei clinical isolate WA7593 and its transconjugant WA7593TC1
| Antimicrobial drug | MIC (μg/mL) | |
|---|---|---|
| WA7593 | WA7593TC1 | |
| Ampicillin | >256 | >256 |
| Cephalothin | >256 | >256 |
| Cefotaxime | >32 | >32 |
| Ceftazidime | 4 | 4 |
| Ceftriaxone | >32 | >32 |
| Cefaclor | >256 | >256 |
| Imipenem | 0.19 | 0.25 |
| Trimethoprim/sulfamethoxazole | >32 | 0.032 |
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