“…Hoban and Jones, using data from five North American medical centers (5), reported that susceptibility of members of the family Enterobacteriaceae to ciprofloxacin ranged from 95 to 100%, that of Staphylococcus aureus ranged from 14 to 96%, that of coagulase-negative staphylococci ranged from 55 to 91%, that of Streptococcus pneumoniae was 85%, that of P. aeruginosa was 85%, and those of Haemophilus influenzae and Moraxella catarrhalis were 100%. We undertook a Canada-wide, 15-medical-center survey to deter-mine the in vitro activities of ciprofloxacin and several other antimicrobial agents against gram-positive and gram-negative pathogens and compared these findings with those collected from previous surveys (1,5,6,12).…”