Occurrence and characterization of mcr-1-harbouring Escherichia coli isolated from pigs in Great Britain from 2013 to 2015. by Duggett, N, Sayers, E, AbuOun, M, Ellis, R, Nunez-Garcia, J, Randall, L, Horton, R, Rogers, J, Martelli, F, Smith, R, Brena, C, Williamson, S, Kirchner, M, Davies, R, Crook, D, Evans, S, Teale, C, Anjum, M