Table 2. Results of carbapenemase differentiation tests and sequence types of Escherichia coli isolates.
| E. coli isolates* | Carbapenemase differentiation test | MLST | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MEM | MEM+DPA | MEM+PBA† | MEM+CLX | ST | adk | fumC | gyrB | icd | mdh | purA | recA | |
| EcU443 | 19 | 19 | 24 | 20 | 1642 | 6 | 4 | 5 | 18 | 11 | 8 | 6 |
| EcU120 | 20 | 20 | 25 | 21 | 1642 | 6 | 4 | 5 | 18 | 11 | 8 | 6 |
*EcU443 and EcU120 were isolated on the 8th and 42nd day post admission, respectively; †A difference between MEM+PBA and MEM >5 mm indicated KPC production.
Abbreviations: CLX, cloxacillin; DPA, dipicolinic acid; MEM, meropenem; MLST, Multilocus sequence typing; PBA, phenylboronic acid.