Comparativein-vitro activity of ciprofloxacin against non-fermenters

Abstract
Theut-vitro activity of ciprofloxacin, a quinolone-carboxylic acid derivative, was compared with those of carbenicillin, azlocilhn, cefsulodin, ccftazidime, tobramycin and amikacin against 187 non-fermenters. Only one of the 131 strains of Pseudomonas spp was not inhibited by 1 mg/1 of ciprofloxacin, while these isolates appeared highly resistant to carbenicillin, azlocilhn and cefsulodin. Ciprofloxacin was also the best agent againstFlavobacterium, AlcaJtgenes faecaJis andAcinetobacter calcoaceticus with MIC90's respectively of 0–5, 4 and 8 mg/1. This new compound appeared bactericidal, and we found a small or no inoculum effect with ciprofloxacin.