Table 6.
Extended spectrum beta-lactamase genes found in E. coli and Klebsiella pneumoniae
| Extended-Spectrum Beta-lactam resistance genes | Species | W3 | M3 | M6 | M12 | |
|---|---|---|---|---|---|---|
| CMY (Class C) | blaCMY-2 | Escherichia coli | 1 | 1 | 1 | 0 |
| CTX-M beta lactamases (Class A) | blaCTX-M15 | Escherichia coli | 0 | 1 | 0 | 0 |
| SHV beta-lactamases (Class A) | blaSHV-1 | Klebsiella pneumoniae | 6 | 7 | 4 | 2 |
| blaSHV-108 | Klebsiella pneumoniae | 0 | 0 | 1 | 0 | |
| blaSHV-11 | Klebsiella pneumoniae | 5 | 2 | 4 | 3 | |
| blaSHV-142 | Klebsiella pneumoniae | 1 | 0 | 0 | 0 | |
| blaSHV-26 | Klebsiella pneumoniae | 1 | 0 | 0 | 0 | |
| blaSHV-27 | Klebsiella pneumoniae | 0 | 0 | 0 | 2 | |
| blaSHV-38 | Klebsiella pneumoniae | 0 | 0 | 1 | 0 | |
| blaSHV-85 | Klebsiella pneumoniae | 0 | 0 | 0 | 1 | |
| blaSHV-93 | Klebsiella pneumoniae | 0 | 1 | 1 | 0 | |
| TEM beta-lactamases (Class A) | blaTEM-1b | Escherichia coli | 0 | 0 | 1 | 0 |