Figure 27. Gonococcal Isolate Surveillance Project (GISP)—Percent of Neisseria gonorrhoeae isolates with resistance or intermediate resistance to ciprofloxacin, 1990–2008

NOTE: Resistant isolates have ciprofloxacin 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.


