title: Clonal dissemination of Klebsiella pneumoniae ST512 carrying blaKPC-3 in a hospital in southern Italy.
abstract: Strains of Klebsiella pneumoniae producing KPC-carbapenemase have emerged as one of the most important multidrug-resistant Gram-negative nosocomial pathogens. Here, we report the first isolation and subsequent dissemination of a K. pneumoniae ST512 producing KPC-3 carbapenemase in a hospital in southern Italy. Isolates were obtained from blood, throat swabs, sputum, catheters, and urine of patients admitted to different hospital wards. Antimicrobial MICs were determined for all isolates by automated systems and confirmed by Etest. Carbapenemase production was confirmed by the modified Hodge test and by a disc synergy test, and carbapenemase genes were investigated by PCR. All isolates were characterized by pulse-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) analysis. Most isolates were multidrug resistant with exception of some isolates intermediately susceptible to gentamicin, tigecycline, and trimethoprim-sulfamethoxazole. PCR analysis showed that isolates harbored the bla(KPC-3) gene associated with bla(TEM) and bla(SVH). PFGE and MLST showed that all isolates belonged to the same ST512 clone recently described in Israel.
authors: Department of Cellular and Molecular Biology and Pathology "Luigi Califano", Medicine School, University of Naples "Federico II", Naples, Italy.
authors: Giovanna
authors: G
authors: Pulcrano
authors: Dora Vita
authors: DV
authors: Iula
authors: Cristiana
authors: C
authors: de Luca
authors: Emanuela
authors: E
authors: Roscetto
authors: Antonio
authors: A
authors: Vollaro
authors: Fabio
authors: F
authors: Rossano
authors: Maria Rosaria
authors: MR
authors: Catania
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001426:Bacterial Proteins / Q000235:genetics; D015373:Bacterial Typing Techniques; D003428:Cross Infection / Q000188:drug therapy / Q000453:epidemiology / Q000382:microbiology*; D004196:Disease Outbreaks; D024901:Drug Resistance, Multiple, Bacterial; D016521:Electrophoresis, Gel, Pulsed-Field; D005798:Genes, Bacterial; D006785:Hospitals, University; D006801:Humans; D007558:Italy / Q000453:epidemiology; D007710:Klebsiella Infections / Q000188:drug therapy / Q000453:epidemiology / Q000382:microbiology*; D007711:Klebsiella pneumoniae / Q000187:drug effects / Q000235:genetics / Q000302:isolation & purification*; D008826:Microbial Sensitivity Tests; D058885:Multilocus Sequence Typing; D016133:Polymerase Chain Reaction; D001618:beta-Lactamases / Q000235:genetics
chemical_list: D000900:Anti-Bacterial Agents; D001426:Bacterial Proteins; D001618:beta-Lactamases; C063912:carbapenemase
keywords: Klebsiella pneumoniae ST512; blaKPC-3; blaTEM; multidrug resistance; outbreak