title: In vitro activity of ceftibuten against Haemophilus influenzae and Branhamella catarhallis.
abstract: The in vitro activity of ceftibuten, a new orally administered cephalosporin, was assessed against clinical isolates of Haemophilus influenzae and Branhamella catarrhalis. The activity of ceftibuten was compared to that of ampicillin, amoxicillin-clavulanic acid, and three oral cephalosporins, cefaclor, cefuroxime, and cefixime. With the exception of rare beta-lactamase-negative ampicillin-resistant strains of H. influenzae, resistance to ceftibuten was not observed with any of the study isolates. Ceftibuten was more active than amoxicillin/clavulanic acid for beta-lactamase-positive and -negative strains of H. influenzae; it was less active than this combination for B. catarrhalis. Ceftibuten was essentially equivalent in activity to cefixime against both Haemophilus and Branhamella but more active than cefaclor and cefuroxime against these two organisms.
authors.affiliation: Department of Clinical Microbiology, University of Massachusetts Medical Center, Worcester 01655.
authors.forename: G V
authors.initials: GV
authors.lastname: Doern
mesh_terms: D000658:Amoxicillin / Q000494:pharmacology; D019980:Amoxicillin-Potassium Clavulanate Combination; D000667:Ampicillin / Q000494:pharmacology; D000892:Anti-Infective Agents, Urinary / Q000494:pharmacology; D002433:Cefaclor / Q000494:pharmacology; D020682:Cefixime; D002439:Cefotaxime / Q000031:analogs & derivatives / Q000494:pharmacology; D000077722:Ceftibuten; D002444:Cefuroxime / Q000494:pharmacology; D002511:Cephalosporins / Q000494:pharmacology*; D002969:Clavulanic Acids / Q000494:pharmacology; D004359:Drug Therapy, Combination / Q000494:pharmacology; D006193:Haemophilus influenzae / Q000187:drug effects* / Q000201:enzymology; D006801:Humans; D001936:Moraxella catarrhalis / Q000187:drug effects*; D001618:beta-Lactamases / Q000378:metabolism
chemical_list: D000892:Anti-Infective Agents, Urinary; D002511:Cephalosporins; D002969:Clavulanic Acids; D002433:Cefaclor; D019980:Amoxicillin-Potassium Clavulanate Combination; D000667:Ampicillin; D000658:Amoxicillin; D020682:Cefixime; D001618:beta-Lactamases; D000077722:Ceftibuten; D002439:Cefotaxime; D002444:Cefuroxime