Co-occurrence of colistin-resistance genes mcr-1 and mcr-3 among multidrug-resistant Escherichia coli isolated from cattle, Spain, September 2015
Marta Hernández(Universidad de Valladolid), M. Rocío Iglesias(Universidad de Extremadura), David Rodrı́guez-Làzaro(Universidad de Burgos), Alejandro Gallardo(Universidad de Extremadura), Narciso M. Quijada(Instituto Tecnológico Agrario de Castilla y León), Pedro Miguela-Villoldo(Universidad Complutense de Madrid), Maria Jorge Campos(Instituto Politécnico de Leiria), Segundo Píriz(Universidad de Extremadura), Gema López-Orozco(Ministerio de Agricultura, Pesca y Alimentación), Cristina de Frutos(Ministerio de Agricultura, Pesca y Alimentación), José Luis Sáez(Ministerio de Agricultura, Pesca y Alimentación), María Ugarte‐Ruiz(Universidad Complutense de Madrid), Lucas Domı́nguez(Universidad Complutense de Madrid), Alberto Quesada(Universidad de Extremadura)
Cited by 119Open Access
Abstract
Colistin resistance genes mcr-3 and mcr-1 have been detected in an Escherichia coli isolate from cattle faeces in a Spanish slaughterhouse in 2015. The sequences of both genes hybridised to same plasmid band of ca 250 kb, although colistin resistance was non-mobilisable. The isolate was producing extended-spectrum beta-lactamases and belonged to serotype O9:H10 and sequence type ST533. Here we report an mcr-3 gene detected in Europe following earlier reports from Asia and the United States.
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