Table 2

Phenotypes of ESBL, AmpC overproduction, active efflux pump, and outer membrane protein profile among 53 ertapenem-resistant E. cloacae clinical isolatesa

ETP MIC (μg/ml)No. of strainsPhenotype
ESBLAmpCEfflux pumpLoss or decreased OMPs
8–3214+
8–>25610++
162++
8–649+++
82+
8–324+++
8–6412++
  • a ESBL, extended-spectrum β-lactamase; ETP, ertapenem; OMPs, outer membrane proteins.