Gonococcal Isolate Surveillance Project (GISP) — Percent of
Neisseria gonorrhoeae isolates with resistance or intermediate
resistance to ciprofloxacin, 1990–2001
Note: Resistant isolates have ciprofloxacin MICs >1 mg/mL. Isolates with
intermediate resistance have ciprofloxacin MICs of 0.125 - 0.5 mg/mL.
Susceptibility to ciprofloxacin was first measured in GISP in 1990.