Plasmid-mediated transferable colistin resistance encoded by the mcr-1 gene was described in Escherichia coli and Klebsiella pneumoniae isolates from pigs and chicken at a prevalence of around 20%, and in clinical isolates from human beings at a prevalence of around 1% in China.1 The prevalence of the mcr-1 gene in Enterobacteriaceae in other countries and in the community is unknown. [...],
The Lancet Infectious Diseases
Department of Medical Microbiology and Infectious Diseases

Arcilla, M.S, van Hattem, J.M, Matamoros, S, Melles, D.C, Penders, J, de Jong, M.D, & Schultsz, C. (2016). Dissemination of the mcr-1 colistin resistance gene. The Lancet Infectious Diseases, 16(2), 147–149. doi:10.1016/S1473-3099(15)00541-1