Minocycline, 100 mg nightly, was as effective as doxycycline, 100 mg twice daily, each given for 7 days in the treatment of nongonococcal urethritis and mucopurulent cervicitis. Vomiting and gastrointestinal upset occurred more frequently in the doxycycline group.
In vitro lomefloxacin was highly active against 208 penicillin-susceptible and -resistant isolates of Neisseria gonorrhoeae. However, its MIC and MBC against 10 isolates of Chlamydia trachomatis were 2 and greater than 4 micrograms/ml, respectively.
In vitro sparfloxacin was highly active against 223 penicillin-susceptible isolates ofNeisseria gonorrhoeaewith a 90% minimal inhibitory concentration (MIC90) of 0.004 μg/mL. Resistant strains ofN gonorrhoeaetotalled 55; 32 were penicillinase-producing and 23 chromosomally resistant. The MIC90for these isolates was 0.004 μg/mL and 0.008 μg/mL, respectively.Chlamydia trachomatiswas also very susceptible with an MIC50of 0.063 μg/mL and a 50% minimal bactericidal concentration of 0.032 μg/mL for 11 isolates.
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