Figure 31. Gonococcal Isolate Surveillance Project (GISP)—Percentage of Neisseria gonorrhoeae Isolates with Resistance or Intermediate Resistance to Ciprofloxacin, 1990–2010
NOTE: Resistant isolates have ciprofloxacin minimum inhibitory concentrations (MICs) ≥1 µg/ml. Isolates with intermediate resistance have ciprofloxacin MICs of 0.125–0.5 µg/ml. Susceptibility to ciprofloxacin was first measured in GISP in 1990.