Volume 14, Number 12—December 2008
Letter
Human Salmonella Infection Yielding CTX-M β-Lactamase, United States
Maria Sjölund-Karlsson
, Jennifer Yam, Jillian Schwenk, Kevin Joyce, Felicita Medalla, Ezra Barzilay, and Jean M. Whichard
, Jennifer Yam, Jillian Schwenk, Kevin Joyce, Felicita Medalla, Ezra Barzilay, and Jean M. Whichard
Table
MIC values of antimicrobial drugs for the Salmonella ser. Typhimurium isolate and its Escherichia coli DH10B transformant
| Antimicrobial agent | MIC, mg/L |
||
|---|---|---|---|
| S. ser. Typhimurium | E. coli DH10B transformant | E. coli DH10B | |
| Amikacin | 1 | 1 | 1 |
| Amoxicillin–clavulanic acid | 32 | 16 | 4 |
| Ampicillin | >32 | >32 | 4 |
| Aztreonam | 32 | 32 | 0.12 |
| Cefepime | 32 | 32 | <0.06 |
| Cefotaxime | >64 | >64 | <0.06 |
| Cefotaxime–clavulanic acid | 0.25 | 0.12 | <0.06 |
| Cefoxitin | 2 | 8 | 8 |
| Cefquinome | >32 | >32 | <0.06 |
| Ceftazidime | 8 | 8 | 0.5 |
| Ceftazidime–clavulanic acid | 0.5 | 0.25 | 0.12 |
| Ceftiofur | >8 | >8 | 0.5 |
| Ceftriaxone | >64 | >64 | <0.25 |
| Chloramphenicol | >32 | <2 | <2 |
| Ciprofloxacin | <0.016 | <0.016 | <0.016 |
| Gentamicin | 4 | <0.25 | <0.25 |
| Imipenem | 0.5 | 0.25 | 0.25 |
| Kanamycin | >64 | <8 | <8 |
| Nalidixic acid | 4 | 1 | 1 |
| Piperacillin-tazobactam | >64 | 2 | 2 |
| Streptomycin | <32 | >64 | >64 |
| Sulfisoxazole | >256 | <16 | <16 |
| Tetracycline | >32 | <4 | <4 |
| Trimethoprim-sulfamethoxazole | >4 | <0.12 | <0.12 |
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