We are also grateful to Dr Martinotti for the

gift of E

We are also grateful to Dr. Martinotti for the

gift of E. coli CFT073 and Carla Rodrigues for statistical analysis support. This work was supported by Fundação para a Ciência e Tecnologia (grants no. PEst-C/EQB/LA0006/2011, PTDC/AAC-AMB/103386/2008, EXPL/DTP-EPI/0196/2012 and FCOMP-01-0124-FEDER-027745) and Universidade do Porto/Santander TOTTA (grant no. PP-IJUP2011-277). AN was supported by a Marie Curie Intra European Fellowship within the 7th European Community Framework Programme (PIEF-GA-2009-255512) and an ESCMID research grant 2012. Work in Teresa M. Coque´s lab is funded by grants from the European Union (EVOTAR-LSHM-2011-282004), the Ministry of Economy and Competitiveness-ISCIII of Spain (PI12/01581) and the regional government LXH254 chemical structure of Madrid (S2010/BMD2414_PROMPT-CM). References 1. Woodford N, Turton JF, Livermore DM: Multiresistant Gram-negative bacteria: the role of high-risk clones in the dissemination of antibiotic resistance.

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groups O25b:H4-B2-ST131, O15:H1-D-ST393 and CGA-D-ST69 with high virulence gene content in Spain. J Antimicrob Chemother 2011,66(9):2011–2021.PubMedCrossRef 6. Cagnacci S, Gualco L, Debbia E, Schito GC, Marchese A: European emergence of ciprofloxacin-resistant Escherichia coli clonal groups O25:H4-ST 131 and O15:K52:H1 causing community-acquired uncomplicated cystitis. J Clin Microbiol 2008,46(8):2605–2612.PubMedCrossRef 7. Gibreel TM, Dodgson AR, Cheesbrough J, Fox AJ, Bolton FJ, Upton M: Population structure, virulence potential and antibiotic susceptibility of uropathogenic Escherichia coli from Northwest England. J Antimicrob Chemother 2012,67(2):346–356.PubMedCrossRef 8.

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