NDM-1 Hazard in the Balkan States: Evidence of the First Outbreak of NDM-1-Producing Klebsiella pneumoniae in Bulgaria

Autor: Elena Kioseva, Encho Savov, Lida Politi, Angelina Trifonova, Nicholas Spanakis, Athanasios Tsakris
Rok vydání: 2017
Předmět:
Zdroj: Microbial drug resistance (Larchmont, N.Y.). 24(3)
ISSN: 1931-8448
Popis: New Delhi MBL (NDM) carbapenemase-producing Klebsiella pneumoniae has become one of the most concerning multidrug-resistant pathogens. The Balkan counties are considered a reservoir for the spread of such strains based on several reports documenting NDM infections after hospitalization in this region. Nevertheless, NDM-producing K. pneumoniae have been only occasionally documented from Balkans. The current study documents the first polyclonal outbreak caused by NDM-1-producing K. pneumoniae in Bulgaria. From July 2015 to April 2016, all 25 single-patient carbapenem-nonsusceptible K. pneumoniae isolates were collected. Phenotypic and molecular screening revealed that 17 produced NDM-1 carbapenemase. All NDM-1 producers harbored blaCTX-M-15, blaCMY-4, blaTEM-1, and blaOXA-2; five also harbored blaOXA-1. In all cases, blaNDM-1 was flanked upstream by ISAba125 element and downstream by bleMBL. Pulsed-field gel electrophoresis (PFGE) clustered NDM-1-positive isolates into four distinct clonal types, A to D. ML...
Databáze: OpenAIRE