Table 2

Minimal inhibitory concentration (MIC) of ciprofloxacin against common Gram negative bacteria isolated from the bloodstream in a teaching hospital19

Bacterial speciesMIC90 (mg/l)
Escherichia coli ⩽0.03
Klebsiella spp0.12
Indole positive Proteus spp0.25
Proteus mirabilis 0.06
Salmonella spp0.03
Enterobacter, Citrobacter 0.25
Acinetobacter spp1
Pseudomonas aeruginosa 0.25
Other non-fermenters2