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Revealing mcr-1-positive ESBL-producing Escherichia coli strains among Enterobacteriaceae from food-producing animals (bovine, swine and poultry) and meat (bovine and swine), Portugal, 2010–2015
- Clemente, Lurdes, Manageiro, Vera, Correia, Ivone, Amaro, Ana, Albuquerque, Teresa, Themudo, Patrícia, Ferreira, Eugénia, Caniça, Manuela
- International journal of food microbiology 2019 v.296 pp. 37-42
- Escherichia coli, Salmonella enterica, antibiotic resistance, beta-lactamase, beta-lactamase bacteria, cattle, colistin, feeds, food animals, meat, poultry, resistance genes, swine, Portugal
- We screened 1840 Enterobacteriaceae isolates from food-producing animals, meat, meat products and animal feed, for the detection of plasmid-mediated colistin resistance, during 2010–2015. The mcr-1 gene was detected in 8.0% (97/1206) Escherichia coli and in 0.47% (3/634) Salmonella enterica isolates, with a high number of mcr-1 positive E. coli isolates (45.7%) being extended-spectrum β-lactamase or plasmid-mediated AmpC β-lactamase co-producers. No mcr-2 gene was detected. Our findings highlight the spread of mcr-1 genes within a wide-ranging sample of food-producing animals and meat, in Portugal.