Abstract
The presence of the mcr-1 gene in Escherichia coli isolated from retail freshwater fish was investigated. Seven (3.65%) clonally unrelated original E. coli isolates from grass carp were positive for mcr-1. The mcr-1 genes were encoded by either chromosomes (n 2) or conjugative plasmids (2 IncI2, 2 IncP, and 1 IncX4). The IncP plasmids were similar to other mcr-1-harboring IncP plasmids from China, though the insertion sites varied. Our report warrants further surveillance of resistance genes in aquaculture.
Original language | English |
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Article number | e02378-17 |
Journal | Antimicrobial Agents and Chemotherapy |
Volume | 62 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2018 |
Externally published | Yes |
Keywords
- Colistin resistance
- Enterobacteriaceae
- Escherichia coli
- Fish
- IncP
- Mcr-1
- Plasmid mediated