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Table 3 Comparison of susceptibility of levofloxacin-susceptible and levofloxacin- nonsusceptible strains of Escherichia coli 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)

Antibiotica LVX-S (n = 269) LVX-NS (n = 639) p
S (%) MIC90(mg/L) S (%) MIC90(mg/L)
FOS 98.5 0.5 94.5 4 0.007
TZP 95.9 4 95.3 8 0.688
CXM 63.2 512 19.7 512 < 0.001
CTX 64.7 128 27.1 512 < 0.001
FEP 91.4 8 66.7 64 < 0.001
IMP 100 0.25 99.5 0.25 0.559
AMK 98.9 2 92.0 8 < 0.001
NIT 96.3 16 81.7 64 < 0.001
  1. LVX-S, levofloxacin-susceptible; LVX-NS, levofloxacin-resistant or intermediately.
  2. aDrug abbreviations: FOS, fosfomycin trometamol; TZP, piperacillin-tazobactam; CXM, cefuroxime; CTX, cefotaxime; FEP, cefepime; IMP, imipenem; AMK, amikacin; NIT, nitrofurantoin; LVX, levofloxacin.