Fluoroquinolone-resistant uropathogenic Escherichia coli in Norway: evidence of clonal spread.
Grude, N. 1; Strand, L. 1; Mykland, H. 2; Nowrouzian, F. L. 3; Nyhus, J. 4; Jenkins, A. 1; Kristiansen, B.-E. 1,5
[Miscellaneous] Clinical Microbiology & Infection. 14(5):498-500, May 2008.

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Prevalence, resistance profiles, virulence gene complements, and phylogenetic and clonal affinities of fluoroquinolone-resistant Escherichia coli from urinary tract infections (UTIs) in Norway were investigated. Of 7302 E. coli UTI isolates from 2003, 1.2% were fluoroquinolone-resistant; 35 of these fluoroquinolone-resistant isolates were included in the present study. The isolates were predominantly multiresistant, carried few virulence factors, and tended to belong to the less-virulent phylogroups A and B1. Although the isolates were genetically heterogeneous, there was evidence of a limited degree of clonal dissemination.

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