Detection of mcr-1 colistin resistance gene in polyclonal Escherichia coli isolates in Barcelona, Spain, 2012 to 2015

Author:

Prim Núria1,Rivera Alba1,Rodríguez-Navarro Judith1,Español Montserrat1,Turbau Miquel2,Coll Pere13,Mirelis Beatriz13

Affiliation:

1. Microbiology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain

2. Emergency Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain

3. Universitat Autònoma de Barcelona, Barcelona, Spain

Abstract

Colistin resistance was detected in 53 of 10,011 Escherichia coli (0.5%) by prospective phenotypic testing of consecutive clinical isolates in a single hospital in Barcelona, Spain (2012–15). The mcr-1 gene was retrospectively identified by PCR and sequencing in 15 of 50 available isolates. Each isolate had a unique PFGE pattern except for two. This clonal diversity supports the hypothesis of horizontal dissemination of the mcr-1 gene in the local study population.

Publisher

European Centre for Disease Control and Prevention (ECDC)

Subject

Virology,Public Health, Environmental and Occupational Health,Epidemiology

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