title: Identification and antimicrobial susceptibility of 100 Klebsiella animal clinical isolates.
abstract: The objectives of this study were to determine the distribution of Klebsiella species and phylogenetic groups in animal clinical samples and to determine the levels of antimicrobial resistance of animal Klebsiella clinical isolates. One hundred Klebsiella veterinary clinical isolates were identified using gyrA PCR-RFLP and rpoB gene sequencing as a confirmatory method. Klebsiella pneumoniae phylogenetic group KpI was dominant (78 isolates), but KpII, KpIII (K. variicola), K. oxytoca, K. planticola and K. terrigena were also represented. The relative frequencies in animal infections of Klebsiella species and phylogenetic groups were similar to those observed in human nosocomial infections, suggesting that similar ecological and molecular factors cause Klebsiella infections in both situations. Resistance was common against ampicillin (99%) and cephalexin (43%) but not against ceftazidime, ceftiofur, tetracycline, enrofloxacin, gentamicin and trimethoprim-sulfamethoxazole. Thirteen isolates resistant to three or more antimicrobials or combinations thereof were found, but acquired antimicrobial resistance remains lower among animal isolates than among human nosocomial isolates.
authors.affiliation: Unité Biodiversité des Bactéries Pathogènes Emergentes (U389 INSERM), Institut Pasteur, 25-28 rue du Docteur Roux, F-75724 Paris Cedex 15, France. sbrisse@pasteur.fr
authors.forename: Sylvain
authors.initials: S
authors.lastname: Brisse
authors.forename: Engeline van
authors.initials: Ev
authors.lastname: Duijkeren
mesh_terms: D000668:Ampicillin Resistance; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D027081:DNA Gyrase / Q000235:genetics; D012321:DNA-Directed RNA Polymerases / Q000235:genetics; D024881:Drug Resistance, Bacterial; D024901:Drug Resistance, Multiple, Bacterial; D006801:Humans; D007709:Klebsiella / Q000145:classification* / Q000187:drug effects* / Q000302:isolation & purification; D007710:Klebsiella Infections / Q000382:microbiology / Q000662:veterinary*; D008826:Microbial Sensitivity Tests / Q000662:veterinary; D010802:Phylogeny; D016133:Polymerase Chain Reaction / Q000662:veterinary; D012150:Polymorphism, Restriction Fragment Length; D019105:Random Amplified Polymorphic DNA Technique; D015183:Restriction Mapping / Q000662:veterinary
chemical_list: D000900:Anti-Bacterial Agents; D012321:DNA-Directed RNA Polymerases; C105078:RNA polymerase beta subunit; D027081:DNA Gyrase