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Table 2 Comparison of the susceptibilities of ESBL-producing Escherichia coli strains to various antimicrobial agents

From: In vitro susceptibility of Escherichia colistrains isolated from urine samples obtained in mainland China to fosfomycin trometamol and other antibiotics: a 9-year surveillance study (2004–2012)

Antibiotic ESBL-positive (n = 528) ESBL-negative (n = 380) p
  S (%) MIC90(mg/L) S (%) MIC90(mg/L)  
FOS 93.8 2 98.4 1 0.001
TZP 95.3 16 95.8 8 0.707
IMP 100 0.25 99.2 0.25 0.073
AMK 92.8 8 95.8 4 0.061
NIT 86.2 64 85.8 64 0.869
LVX 17.2 32 46.8 32 < 0.001
  1. aDrug abbreviations: FOS, fosfomycin trometamol; TZP, piperacillin-tazobactam; IMP, imipenem; AMK, amikacin; NIT, nitrofurantoin; LVX, levofloxacin; ESBL, extended-spectrum beta-lactamase.