Detection and characterization of ESBL-producing<i>Escherichia coli</i>expressing<i>mcr-1</i>from dairy cows in China

The data presented here suggest high prevalence of ESBL-EC in Chinese cow farms. Furthermore, it was clearly demonstrated that commensal E. coli strains can be reservoirs of blaCTX-M genes, potentially contributing to the dissemination and transfer of the mcr-1 gene to pathogenic bacteria among cows.