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High genetic diversity of nitrofurantoin- or mecillinam-resistant Escherichia coli indicates low propensity for clonal spread
Umeå University, Faculty of Medicine, Department of Clinical Microbiology, Infectious Diseases.
Umeå University, Faculty of Medicine, Department of Clinical Microbiology.
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2013 (English)In: Journal of Antimicrobial Chemotherapy, ISSN 0305-7453, E-ISSN 1460-2091, Vol. 68, no 9, 1974-1977 p.Article in journal (Refereed) Published
Abstract [en]

The empirical treatment with trimethoprim or ciprofloxacin of urinary tract infections (UTIs) is now questioned, partly due to the global expansion of a few resistant clonal groups of Escherichia coli. In this study we investigated the clonal structure of 34 strains of E. coli (collected from non-pregnant women aged 1865 years with uncomplicated UTIs in Europe and Canada) resistant to either of two other common treatment alternatives for uncomplicated UTIs, mecillinam or nitrofurantoin, using multilocus sequence typing (MLST). The 34 isolates were, despite high levels of multiresistance, distributed all over the E. coli genetic diversity spectrum with little association of antibiotic resistance to specific clonal groups. The results of this study indicate a low probability of a future clonal spread of resistance to mecillinam and nitrofurantoin.

Place, publisher, year, edition, pages
2013. Vol. 68, no 9, 1974-1977 p.
Keyword [en]
uncomplicated urinary tract infections, successful clones, antimicrobial resistance
National Category
Medical and Health Sciences
URN: urn:nbn:se:umu:diva-80428DOI: 10.1093/jac/dkt159ISI: 000323424100005OAI: diva2:651131
Available from: 2013-09-24 Created: 2013-09-17 Last updated: 2013-09-24Bibliographically approved

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Johansson, AndersGranholm, Susanne
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Infectious DiseasesDepartment of Clinical Microbiology
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