title: Tetracycline and erythromycin resistance among clinical isolates of Branhamella catarrhalis.
abstract: We reviewed tetracycline and erythromycin disk diffusion susceptibility of 457 isolates of Branhamella catarrhalis. Four isolates were resistant to tetracycline, with MICs for two available isolates of 16 micrograms/ml. Sixteen isolates were in the moderately susceptible range for erythromycin, with an MIC for one available isolate being greater than 8 micrograms/ml. These are the first tetracycline- and (by MIC) erythromycin-resistant B. catarrhalis isolates reported from the United States.
authors.affiliation: Department of Microbiology University of Texas Health Center, Tyler 75710.
authors.forename: B A
authors.initials: BA
authors.lastname: Brown
authors.forename: R J
authors.initials: RJ
authors.lastname: Wallace
authors.forename: C W
authors.initials: CW
authors.lastname: Flanagan
authors.forename: R W
authors.initials: RW
authors.lastname: Wilson
authors.forename: J I
authors.initials: JI
authors.lastname: Luman
authors.forename: S D
authors.initials: SD
authors.lastname: Redditt
mesh_terms: D004352:Drug Resistance, Microbial; D004917:Erythromycin / Q000494:pharmacology*; D006801:Humans; D008826:Microbial Sensitivity Tests; D001936:Moraxella catarrhalis / Q000187:drug effects* / Q000201:enzymology / Q000235:genetics; D012141:Respiratory Tract Infections / Q000382:microbiology; D013753:Tetracycline Resistance; D013754:Tetracyclines / Q000494:pharmacology; D014481:United States; D001618:beta-Lactamases / Q000378:metabolism
chemical_list: D013754:Tetracyclines; D004917:Erythromycin; D001618:beta-Lactamases