Co-Occurrence of NDM-9 and MCR-1 in a Human Gut Colonized ST1011.

Background: The emergence of the plasmid-borne colistin-resistant gene () poses a great threat to human health. What is worse, the recent observations of the coexistence of with carbapenemase encoding genes in some bacteria caused even more concern. Yet, there is a lack of observations of such strains in the human gut.