Table 2 Characteristics of ESBL-producing Enterobacteriaceae isolates and their associated drug resistance genes and gene cassettes
ESBLs | Other β-lactamases | Associated drug resistance genes | Gene cassettes | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Species | No | CTX-M-15 | SHV-12 | Both | TEM-1 | OXA-1 | TetA | aac6'-1b | aac6'-1b-cr | qnrA | qnrB | catB3 | sul1 | sul2 | sul1- sul2 | aadA1 | aadA2 | aadA4 | aadA5 | dfrA5 | drA22 | dfrA17-aadA5 |
E. coli | 18 | 14 | 2 | 2 | 12 | 13 | 8 | 14 | 13 | 0 | 3 | 0 | 2 | 3 | 8 | 2 | 1 | 1 | 1 | 2 | 0 | 6 |
K. pneumoniae | 14 | 6 | 3 | 5 | 7 | 13 | 9 | 13 | 13 | 0 | 5 | 4 | 2 | 5 | 7 | 0 | 2 | 0 | 0 | 1 | 1 | 3 |
K. oxytoca | 3 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
E. cloacae | 14 | 8 | 4 | 1 | 12 | 2 | 7 | 8 | 7 | 1 | 4 | 0 | 0 | 6 | 8 | 0 | 1 | 1 | 0 | 0 | 0 | 2 |
Totals | 49 | 29 | 11 | 8 | 32 | 28 | 24 | 35 | 33 | 1 | 12 | 4 | 4 | 14 | 25 | 2 | 4 | 2 | 2 | 3 | 1 | 11 |