title: In vitro activity of ceftazidime (GR 20263) and other beta-lactam antibiotics against Haemophilus influenzae.
abstract: Minimal inhibitory concentrations (MIC) and minimal bactericidal concentrations (MBC) were determined for ceftazidime (GR 20263 - pentahydrate), RO 13-9904, cefoperazone, cefotaxime, lamoxactam, cefamandole and ampicillin using clinical isolates of beta-lactamase-producing and beta-lactamase-negative Haemophilus influenzae. RO 13-9904 and cefotaxime were the most active, followed by ceftazidime, lamoxactam and cefoperazone. Ceftazidime displayed high stability against the beta-lactamase-producing strains with a low MBC:MIC ratio.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D002442:Ceftazidime; D002511:Cephalosporins / Q000494:pharmacology*; D006193:Haemophilus influenzae / Q000187:drug effects* / Q000201:enzymology; D008826:Microbial Sensitivity Tests; D001618:beta-Lactamases / Q000378:metabolism
chemical_list: D002511:Cephalosporins; D000667:Ampicillin; D002442:Ceftazidime; D001618:beta-Lactamases