Prevalence and risk factors of mcr-1-positive volunteers after colistin banning as animal growth promoter in China: a community-based case-control study

China banned the use of colistin as animal growth promoter in April 2017. Herein, we report the prevalence of mcr-1 in the intestine of healthy human and risk factors associated with mcr-1 carriage after the implementation of the ban.

Our study implicate aquatic food is associated with mcr-1 carriage in healthy population, even after the ban on colistin. Dietary modification (eg. whole grains) may help combat mcr-1-positive bacterial colonization in the gut.