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Diagn Microbiol Infect Dis. 2011 Jun;70(2):274-7. doi: 10.1016/j.diagmicrobio.2011.01.006. Epub 2011 Mar 11.

Molecular epidemiology of KPC-2- producing Klebsiella pneumoniae isolates in Brazil: the predominance of sequence type 437.

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1
Laboratório de Pesquisa em Infecção Hospitalar, Instituto Oswaldo Cruz, FIOCRUZ, Avenida Brasil 4365, 21045-900, Rio de Janeiro, Brazil.

Abstract

The aim of this study was to investigate the genetic relatedness of 57 KPC-2-producing Klebsiella pneumoniae isolates from 5 states in Brazil, during 2006-2009. Pulse-field gel electrophoresis analysis identified 10 pulsotypes. The pulsotype designated as Kp-RJ (Klebsiella pneumoniae-Rio de Janeiro) was the dominant clone found in the states of Rio de Janeiro and Espírito Santo. Multilocus sequence typing of Kp-RJ assigned it to ST 437. Sequence types ST11, ST16, ST25, ST70, ST101, ST105, ST423, ST442, and ST443 were also identified. These results indicate the dissemination of a successful KPC-producing clone (ST437) in Brazil, which is a single locus variant of ST258.

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