Abstract: Recently, the emergence of an international lineage of the CTX-M-27-producing clade C1 of Escherichia coli ST131 is being observed. The aim is to see if this strain has also been introduced in our area. Twenty-eight (33%) out of 86 individuals from two LTCFs in Seville were found to be colonized with fluoroquinolone-resistant E. coli ST131 and 46% isolates were ESBL/pAmpC producers. C1 isolates were more common than C2 and more frequently produced blaESBL/pAmpC genes (53% vs 33%). Strain sharing was observed in 6 groups of 2–5 cases (61%). A ...
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