Mcr-1 plasmid-mediated colistin resistance genes in environmental Enterobacteriaceae

An interesting new Italian study has identified the mcr-1 gene, a plasmid-mediated colistin resistance gene, in 8% of environmental Enterobacteriaceae isolates. This suggests that environmental Enterobacteriaceae and perhaps even environmental surfaces themselves could be important reservoirs in the spread of mcr-1 and colistin resistance.

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