Table 12.
Antimicrobial resistance and biofilm formation capacity of E. coli containing the stx1 and stx2 virulence genes, at different temperatures, from pig carcasses from slaughterhouses A and B.
| Isolates | Virulence Genes | Biofilm Formation Capacity | Antimicrobial Resistance | ||
|---|---|---|---|---|---|
| 37 °C | 24 °C | 10 °C | |||
| 1E | stx1 | NF | NF | NF | AMO-AMP-ERI-EST-SUL |
| 3E | stx2 | WF | MF | WF | AMO-AMP-ERI-EST-SUL-CLO-CIP |
| 4A | stx1 | SF | SF | SF | AMO-AMP-ERI-EST-SUL-CLO-NAL |
| 4D | stx1 | WF | WF | NF | AMO-AMP-ERI-EST-SUL |
| 5D | stx1, stx2 | MF | FFO | WF | AMO-AMP-ERI-EST-GEN-SUL-CLO-NAL-CIP |
| 6B | stx1 | NF | NF | NF | AMO-AMP-ERI-EST-SUL-CLO-NAL |
| 7A | stx1, stx2 | SF | SF | SF | AMO-AMP-ERI-EST-SUL-DOX-TET-CLO |
| 7B | stx1 | MF | SF | SF | AMO-AMP-EST-SUL-DOX-TET-CLO-NAL |
| 7C | stx1 | MF | WF | WF | EST-GEN-SUL-DOX-TET-CLO-NAL-CIP |
| 7D | stx1 | MF | MF | WF | AMO-AMP-EST-SUL-DOX-TET-CLO-NAL |
| 7E | stx1 | WF | NF | NF | AMO-AMP-EST-SUL-DOX-TET-CLO |
| 8A | stx1, stx2 | WF | WF | WF | AMO-AMP-CFZ-CAZ-ERI-EST-DOX-TET-CLO |
| 8B | stx2 | FM | WF | WF | AMO-AMP-ERI-EST-DOX-TET-CLO-NAL |
| 9A | stx2 | WF | WF | WF | AMO-AMP-EST-SUL-DOX-TET-CLO-NAL-CIP |
| 9C | stx1, stx2 | WF | MF | SF | CAZ |
| 10C | stx1 | WF | WF | WF | CFZ-ERI-SUL-DOX-TET-CLO-NAL |
| 11A | stx2 | MF | MF | SF | AMO-AMP-EST-SUL-DOX-TET-CLO-NAL |
| 11D | stx1, stx2 | MF | MF | WF | AMO-AMP-EST-SUL-DOX-TET-CLO-NAL |
| 12A | stx1 | WF | MF | SF | AMO-AMP-ERI |
| 12D | stx1 | WF | WF | WF | AMO-AMP-ERI-SUL |
NF = non-biofilm forming; WF = weakly biofilm forming; MF= moderate biofilm former; SF= strong biofilm former. AMO = amoxicillin, AMP = ampicillin, CFZ = cefazolin, CAZ = ceftazidime, ERI = erythromycin, EST = streptomycin, GEN = gentamicin, SUL = Sulfonamide, DOX = doxycycline, TET = tetracycline, CLO = chloramphenicol, NAL = nalidixic acid, CIP = ciprofloxacin.