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© Research
Publication : Diagnostic microbiology and infectious disease

Virulence genes, capsular and plasmid types of multidrug-resistant CTX-M(-2, -8, -15) and KPC-2-producing Klebsiella pneumoniae isolates from four major hospitals in Brazil.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Diagnostic microbiology and infectious disease - 01 Jun 2018

Andrade LN, Novais Â, Stegani LMM, Ferreira JC, Rodrigues C, Darini ALC, Peixe L,

Link to Pubmed [PMID] – 29459053

Link to DOI – S0732-8893(18)30012-910.1016/j.diagmicrobio.2018.01.007

Diagn Microbiol Infect Dis 2018 Jun; 91(2): 164-168

We performed a single-month snapshot study of the population diversity of multidrug resistant (MDR) Klebsiella pneumoniae isolates producing carbapenemases and/or extended-spectrum β-lactamases from four major hospitals in Brazil. Isolates produced diverse ESBL (CTX-M-2, -8, -15, SHV-2), KPC-2 or both (CTX-M-2 and KPC-2), linked to specific genetic backgrounds and plasmids from a few families (IncR, IncFIIk, IncL/M) that were shared among clonal lineages within and between hospitals. A high clonal diversity was identified, among isolates from the same ST (ST11, ST15, ST101 or ST340). Diverse capsular types (n=13 K-types) were identified, most of which linked to specific ST (ST11 and K27 or K64, ST101 and K17, ST340 and KL151, ST15 and K24 or ST17 and KL112). Isolates shared a common set of virulence genes (ureA, fimH, uge, wabG, mrkD, entB) and occasionally ybtS (42%) and kfuBC (18%). Our data suggest intra- and inter-hospital spread of common genetic structures and international MDR K. pneumoniae clones.

https://pubmed.ncbi.nlm.nih.gov/29459053