TABLE 1.

MIC50s, MIC90s, and MIC ranges of β-lactam agents for C. jejuni and C. coli

β-Lactam agentaMIC(μg/ml) of β-lactam agent for C. jejuni (n = 967)MIC(μg/ml) of β-lactam agent for C. coli (n = 319)
MIC50MIC90RangeMIC50MIC90Range
AMP641280.5-256641284-256
AMX641280.5->128128>1288->128
AMC480.25-3216322-32
PEN64256<8-256128128<8-256
TIC64128<4-256641288-256
CAR1282561->25612825632->256
PIP≥512>512128->512512512512
TZP16321-128163216-32
CLX256>256<8->256256>256256->256
CEF>256>2568->256256>256128->256
CXM1281281->25612825664-256
FAM>256>256<8->256>256>256256->256
FOX1282562->256128>25664->256
CTX480.25-16482-16
MEM0.0150.120.008-0.50.120.120.015-0.25
IPM0.030.06<0.015-0.250.060.120.015-0.25
ATM64>1280.12->12864>1288->128
  • a Abbreviations: AMP, ampicillin; AMX, amoxicillin; AMC, co-amoxiclav (ampicillin-clavulanic acid); PEN, benzylpenicillin; TIC, ticarcillin; CAR, carbenicillin; PIP, piperacillin; TZP, tazocin (piperacillin-tazobactam); CLX, cloxacillin; CEF, cefalothin; CXM, cefuroxime; FAM, cefamandole; FOX, cefoxitin; CTX, cefotaxime; MEM, meropenem; IPM, imipenem; ATM, aztreonam.