title: In vitro susceptibilities and beta-lactamase production of 53 clinical isolates of Branhamella catarrhalis.
abstract: We tested 53 clinical isolates of Branhamella catarrhalis recovered from patients with respiratory symptoms to determine the susceptibility of the isolates to 25 antimicrobial agents, including the newer beta-lactam antibiotics. Of the 53 strains, 46 (86.7%) were beta-lactamase producers. All the strains were susceptible to the majority of the new penicillins and cephalosporins. The combinations of amoxacillin-clavulanic acid and ticarcillin-clavulanic acid were also very active against the beta-lactamase-producing strains.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D006801:Humans; D008826:Microbial Sensitivity Tests; D009346:Neisseriaceae / Q000187:drug effects* / Q000201:enzymology; D012141:Respiratory Tract Infections / Q000382:microbiology*; D001618:beta-Lactamases / Q000096:biosynthesis*
chemical_list: D000900:Anti-Bacterial Agents; D001618:beta-Lactamases