Comparison of azithromycin and moxifloxacin against bacterial isolates causing conjunctivitis.

Objective: To examine in vitro resistance to azithromycin and moxifloxacin in bacterial conjunctivitis isolates.

Methods: MIC90s (Minimum Inhibitory Concentration) and resistance rates to azithromycin and moxifloxacin were determined based upon microtiter broth dilution and/or antimicrobial gradient test strips in a multicenter phase III study and confirmed externally.

Results: The most common isolates collected from bacterial conjunctivitis patients in the phase III study were Haemophilus influenzae (40.