title: Comparison of the in vitro activities of various parenteral and oral antimicrobial agents against endemic Haemophilus ducreyi.
abstract: The in vitro susceptibilities to various antimicrobial agents of 100 strains of beta-lactamase-producing Haemophilus ducreyi recently isolated from patients in New Orleans, La., were determined by an agar dilution method. All strains were highly susceptible to ceftizoxime, ceftriaxone, ceftazidime, azithromycin, erythromycin, ciprofloxacin, and sparfloxacin. beta-Lactam-beta-lactamase inhibitor combinations were less active, but all strains were susceptible to them. Doxycycline exhibited the poorest activity, and the rate of resistance to doxycycline varied depending on the time after inoculation that the MIC was determined.
authors.affiliation: Department of Medicine, Louisiana State University Medical Center, New Orleans 70112.
authors.forename: K E
authors.initials: KE
authors.lastname: Aldridge
authors.forename: C
authors.initials: C
authors.lastname: Cammarata
authors.forename: D H
authors.initials: DH
authors.lastname: Martin
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002602:Chancroid / Q000382:microbiology; D004352:Drug Resistance, Microbial; D006191:Haemophilus ducreyi / Q000187:drug effects* / Q000201:enzymology; D006801:Humans; D008145:Louisiana; D008826:Microbial Sensitivity Tests; D001618:beta-Lactamases / Q000096:biosynthesis
chemical_list: D000900:Anti-Bacterial Agents; D001618:beta-Lactamases