Elsevier, Diagnostic Microbiology and Infectious Disease, 2(68), p. 186-189, 2010
DOI: 10.1016/j.diagmicrobio.2010.05.013
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CTX-M-encoding genes from Klebsiella spp. strains isolated in 2000 and 2006 were characterized as well as their genetic environment. CTX-M-2 variants were predominant in Klebsiella pneumoniae strains, which showed a greater variability in bla(CTX-M) genes, integrons, and plasmids in 2006 when compared to strains collected in 2000. CTX-M-9-producing Klebsiella oxytoca was identified in 2000 as clonal dissemination.