TABLE 2.

Susceptibilities of K. pneumoniae 002(pMG251) and its derivatives to β-lactams

StrainMIC (μg/ml)
CefepimeCefotaximeCefoxitinCeftazidimeErtapenemImipenemMeropenem
002(pMG251)0.125251280.520.125
002(pMG251) Ertapenemr MIC 4a132≥1,024164161
002(pMG251) Ertapenemr MIC 4 carrying pQE7Kb0.516≥1,0248220.5
002(pMG251) Ertapenemr MIC 4 carrying pSHA25Kc0.125251280.2520.125
002(pMG251) Ertapenemr MIC 128d232≥1,024≥32128≥12816
002(pMG251) Ertapenemr MIC 128 carrying pQE7K132≥1,024≥321682
002(pMG251) Ertapenemr MIC 128 carrying pSHA25K0.06151280.2520.125
  • a Ertapenemr MIC 4, resistant derivative for which the ertapenem MIC was 4 μg/ml.

  • b Codes for OmpK36.

  • c Codes for OmpK37.

  • d Ertapenemr MIC 128, resistant derivative for which the ertapenem MIC was 128 μg/ml.