Multi-Locus variable number of tandem repeat analysis for rapid and accurate typing of virulent multidrug resistant escherichia coli clones
AuthorNaseer, Mohammed Umaer; Olsson-Liljequist, Barbro; Woodford, Neil; Dhanji, Hiran; Canton, Rafael; Sundsfjord, Arnfinn; Lindstedt, Bjørn Arne
One hundred E. coli isolates from Norway (n = 37), Sweden (n = 24), UK (n = 20) and Spain (n = 19), producing CTX-M-type - (n = 84), or SHV-12 (n = 4) extended spectrum β-lactamases, or the plasmid mediated AmpC, CMY-2 (n = 12), were typed using multi-locus sequence typing (MLST) and multi-locus variable number of tandem repeat analysis (MLVA). Isolates clustered into 33 Sequence Types (STs) and 14 Sequence Type Complexes (STCs), and 58 MLVA-Types (MTs) and 25 different MLVA-Type Complexes (MTCs). A strong agreement between the MLST profile and MLVA typing results was observed, in which all ST131-isolates (n = 39) and most of the STC-648 (n = 10), STC-38 (n = 9), STC-10 (n = 9), STC-405 (n = 8) and STC-23 (n = 6) isolates were clustered distinctly into MTC-29, -36, -20, -14, -10 and -39, respectively. MLVA is a rapid and accurate tool for genotyping isolates of globally disseminated virulent multidrug resistant E. coli lineages, including ST131.
PublisherPublic Library of Science (PLoS)
CitationPLoS ONE (2012), vol. 7(7): e41232.
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