Comparative in vitro activity of the new difluoro-quinolone temafloxacin (A-62254) against bacterial isolates from cancer patients.

The in vitro activity of temafloxacin, a new difluoro quinolone agent, against 725 bacterial isolates representing 32 species was evaluated in comparison with that of ciprofloxacin. Temafloxacin inhibited the majority of Enterobacteriaceae isolates at a concentration of less than or equal to 0.5 microgram/ml. It was also extremely active against Acinetobacter spp. and Aeromonas hydrophila. Its activity was 2-8 fold less than that of ciprofloxacin against most gram-negative isolates. Methicillin-susceptible and methicillin-resistant Staphylococcus aureus, coagulase-negative Staphylococcus spp., Streptococcus spp., Listeria monocytogenes, Bacillus spp. and group JK corynebacteria were inhibited at concentrations equal to that of ciprofloxacin.