Table 2.

MICs of β-lactams for C. meningosepticumPINT, E. coli DH10B (pBS3), E. coli DH10B (pBS4), and the E. coli DH10B reference strain

β-LactamMIC (μg/ml)
C. meningosepticum PINTE. coli DH10B (pBS3)aE. coli DH10B (pBS4)bE. coli DH10B
Amoxicillin256641284
Ticarcillin256642564
Piperacillin32241
Cephalothin51232162
Cefepime320.060.030.03
Cefoxitin321621
Cefpirome320.50.060.06
Ceftazidime256160.50.5
Cefotaxime640.250.120.12
Aztreonam>5120.250.250.25
Moxalactam6410.120.12
Imipenem320.50.50.12
Meropenem160.120.120.06
  • a E. coli DH10B (pBS3) expressed GOB-1.

  • b E. coli DH10B (pBS4) expressed BlaB-1.