Volume 21, Number 6—June 2015
Dispatch
Extensively Drug-Resistant New Delhi Metallo-β-Lactamase–Encoding Bacteria in the Environment, Dhaka, Bangladesh, 2012
Mark A. Toleman
, Joachim J. Bugert, and Syed A. Nizam
, Joachim J. Bugert, and Syed A. Nizam
Table
Resistance genes and plasmid profiles for a subset of Escherichia coli strains in a study of extensively drug-resistant New Delhi metallo-β-lactamase–encoding bacteria in the environment, Dhaka, Bangladesh, October 2012*
| E. coli strain, ST | Resistance genes |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| blaCTX-M-15 | blaNDM | 16S methylase | blaampC | incX | incFII | incL/M | incA/C | incN2 | |
| 18, ST101 | + | NDM-3 | rmtB | − | − | + | − | − | − |
| 24, ST101 | + | NDM-3 | rmtB | − | − | + | − | − | − |
| 25, ST101 | + | + | rmtB | − | − | + | − | − | − |
| 28, ST101 | + | NDM-3 | rmtB | − | − | + | − | − | − |
| 221, ST101 | + | NDM-1 | rmtB | − | − | + | − | − | − |
| 34, ST648 | + | + | armA | cmy, dha | + | + | − | − | − |
| 192, ST648 | + | NDM-4 | armA | cmy, dha | + | + | − | − | − |
| 346, ST648 | + | + | armA | cmy, dha | + | + | − | − | − |
| 43, ST405 | + | NDM-1 | armA | cmy, dha | + | + | − | − | − |
| 54, ST405 | + | NDM-1 | armA | cmy, dha | + | + | − | − | − |
*armA and rmtB, aminoglycoside methylase genes; CTX-M-15, cmy, and dha, β-lactamases; inc, plasmid incompatibility group; NDM, New-Delhi metallo-β-lactamase; ST, sequence type; −, negative; +, positive.
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