Table 3.
Molecular Characteristics of Extended Spectrum β-Lactamase-Producing K. pneumonia (n = 19)
| Isolate | IEF | Overlay assay | Resistance genes (polymerase chain reaction) | MLST | PFGE clone |
|---|---|---|---|---|---|
| 1 (BC) | pI 8.2 | pI 8.2 | blaCTX-M-15 | ST14 | B |
| 2 (BC) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 3 (BC) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 4 (BC) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 5 (RS) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 5 (BC) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 6 (RS) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 7 (RS) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 7 (BC) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 7 (CSF) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 8 (CS) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 9 (NA) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 10 (BL) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 11(U) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 12 (RS) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 13 (BC) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 14 (RS) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 15 (CS) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
| 16 (RS) | pI 8.2, pI 7.5, pI 7.3, pI 5.4 | pI 8.2 | blaCTX-M-15, blaOXA-1, blaTEM-206, aac(6′)-Ib-cr | ST307 | A |
IEF, isoelettrofocusing; MLST, multi-locus sequence typing; PFGE, pulsed-field gel electrophoresis.