TABLE 1.

β-Lactam MICs for A. baumannii strain RAN and comparison of MICs for E. coli(pMERL100) and E. coli(pGER1)a

AntibioticMIC (μg/ml)
A. baumannii RANE. coli JM109 (pMERL100)E. coli JM109E. coli TG1 (pGER1)E. coli TG1
Cefuroxime>256322>2564
Cefoxitin>25624344
Cefotaxime>320.250.0254≤0.125
Ceftazidime160.750.2516≤0.125
Cephalothin>128>128NDbNDND
  • a pMERL100 carries ampC cloned from A. baumannii RAN. pGER1 carries ampC cloned from A. baumannii RYC52763/97 (5).

  • b ND, not determined.