title: Beta-lactamase-producing isolates of Bacteroides species from children.
abstract: Two hundred twenty-four isolates of Bacteroides sp. were recovered from recurrently inflamed tonsils, infected peritoneal fluid, abscesses, wounds, and burns of hospitalized children. Isolates were examined for beta-lactamase production by the chromogenic cephalosporin analog 87/312 methodology. Altogether, 119 isolates were beta-lactamase producers. Of these, 53 were in the B. fragilis group, 28 were in the B. melaninogenicus groups, 12 were B. oralis, 4 were B. ruminicola subsp. brevis, and 22 were Bacteroides sp. Of 28 beta-lactamase-producing strains of B. melaninogenicus, 25 were recovered from tonsils. These observations indicate that in pediatric patients there is a significant incidence of beta-lactamase producers among anaerobes other than B. fragilis.
mesh_terms: D001439:Bacteroides / Q000201:enzymology* / Q000302:isolation & purification; D002648:Child; D006801:Humans; D010406:Penicillins / Q000627:therapeutic use; D014069:Tonsillitis / Q000188:drug therapy / Q000382:microbiology; D001618:beta-Lactamases / Q000096:biosynthesis*
chemical_list: D010406:Penicillins; D001618:beta-Lactamases