Table 2. Escherichia coli strains used in this study.
| Strain | Serotype | Pathotypea | Virulence factors/ genotypic featuresb | antibiotic resistencec | Sourced | Reference |
|---|---|---|---|---|---|---|
| 123 | O43:H28 | none | none | NalR | NADC | 47 |
| 86–24 Nal | O157:H7 | EHEC | stx2a, LEE | NalR | NADC | 46 |
| LB226692 | O104:H4 | EHEC | stx2a, EAEC virulence plasmid (pAA; 83 kbp; aatA, aggR, aaf/I), additional plasmid (1.5 kbp) | NalR, StrepR, ESBL plasmid (pESBL; 90 kbp; blaTEM-1, blaCTX-M-15) | IHM | 4 |
aEAEC = enteroaggregative E. coli, EHEC = enterohemorrhagic E. coli.
bESBL = Extended-Spectrum Beta-Laktamase, LEE = locus of enterocyte effacement.
cNal = Nalidixic acid, R resistance, Strep = Streptomycin.
dIHM = Institute of Hygiene, University of Münster, NADC = National Animal Disease Center, Agricultural Research Service, U.S. Department of Agriculture.