Volume 16, Number 11—November 2010
Dispatch
Plasmid-mediated Quinolone Resistance among Non-TyphiSalmonella enterica Isolates, USA
Maria Sjölund-Karlsson
, Rebecca Howie, Regan Rickert, Amy Krueger, Thu-Thuy Tran, Shaohua Zhao, Takiyah Ball, Jovita Haro, Gary Pecic, Kevin Joyce, Paula J. Fedorka-Cray, Jean M. Whichard, and Patrick F. McDermott
, Rebecca Howie, Regan Rickert, Amy Krueger, Thu-Thuy Tran, Shaohua Zhao, Takiyah Ball, Jovita Haro, Gary Pecic, Kevin Joyce, Paula J. Fedorka-Cray, Jean M. Whichard, and Patrick F. McDermottTable
Characteristics of non-Typhi Salmonella enterica isolates harboring qnr or the aac(6′)-Ib-cr gene, collected through NARMS, 2007*
| Isolate no. | S. enterica serovar | Submitting site | Resistance phenotype | Ciprofloxacin MIC, mg/L | aac6′Ib/qnr variant |
|---|---|---|---|---|---|
| AM31035 | Thompson | NY | AMP, SUL | 0.5 | aac(6′)-Ib-cr |
| AM30827 | Typhimurium | CA | STR, SUL, TET | 0.5 | qnrS1 |
| AM31228 | Corvallis | VA | ND | 0.5 | qnrS1 |
| AM33914 | Typhimurium | NC | ND | 0.5 | qnrS1 |
| AM31434 | Enteritidis | LX | SUL, SXT, TET | 0.25 | qnrB2 |
| AM33097 | Beaudesert | CA | ND | 0.25 | qnrB19 |
*NARMS, National Antimicrobial Resistance Monitoring System; NY, New York; AMP, ampicillin; SUL, sulfamethoxazole or sulfisoxazole; CA, California; STR, streptomycin; TET, tetracycline; VA, Virginia; ND, none detected; NC, North Carolina; LX, Los Angeles; SXT, trimethoprim/sulfamethoxazole.
