Volume 17, Number 1—January 2011
Letter
Carbapenemases in Enterobacteria, Hong Kong, China, 2009
Yiu-Wai Chu
, Viola W.N. Tung, Terence K.M. Cheung, Man-Yu Chu, Naomi Cheng, Christopher Lai, Dominic N.C. Tsang, and Janice Y.C. Lo
, Viola W.N. Tung, Terence K.M. Cheung, Man-Yu Chu, Naomi Cheng, Christopher Lai, Dominic N.C. Tsang, and Janice Y.C. LoTable
Antimicrobial susceptibility results and ESBL detected for 4 carbapenemase-harboring enterobacteria isolates, Hong Kong, 2009*
| Organism | Patient age, y/ sex | Patient location | Specimen | MIC, μg/mL (CLSI breakpoint for resistance)† |
ESBL/ carbapenemase detected | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IMP (>4) | MEM (>4) | ERT (>1) | NA (>32) | CIP (>4) | NIT (>128) | AK (>64) | GN (>16) | SXT (>80) | |||||
| Citrobacter freundii | 69/M | Hospital | Sputum | 8 | >16 | >8 | >32 | >4 | 128 | <2 | 8 | >320 | IMP-4, CTX-M-9 |
| Klebsiella pneumoniae | 60/M | Hospital | Bedsore | >16 | >16 | >8 | >32 | >4 | >512 | 16 | <1 | >320 | IMP-4 |
| Enterobacter cloacae | 68/F | Hospital | Urine | >16 | >16 | >8 | 4 | <0.25 | 64 | <2 | <1 | <20 | IMI-3 |
| Escherichia coli | 64/M | Outpatient clinic | Urine | 4 | 2 | 4 | <2 | <0.25 | <16 | >256 | >16 | <20 | NDM-1 |
*ESBL, extended-spectrum β-lactamase; IMP, imipenem; MEM, meropenem; ERT, ertapenem; NA, nalidixic acid; CIP, ciprofloxacin; NIT, nitrofurantoin; AK, amikacin; GN, gentamicin; SXT, co-trimoxazole; NDM-1, New Delhi metallo-β-lactamase.
†CLSI, Clinical and Laboratory Standards Institute, updated June 2010.
