TABLE 2.
Characteristics of STEC and atypical EPEC isolates from retail meatsa
| Isolate | Serotype | Presence of gene |
Source | State | Year | ||||
|---|---|---|---|---|---|---|---|---|---|
| stx1 | stx2 | eae | EHEC hlyA | bfp | |||||
| 22813 | O83:H8 | + | + | − | + | Ground beef | MD | 2002 | |
| N2688 | O88:H38 | + | + | − | + | Ground beef | MD | 2004 | |
| N11354 | O83:H8 | + | + | − | + | Ground beef | GA | 2006 | |
| N11355 | O83:H8 | + | + | − | + | Ground beef | GA | 2006 | |
| N15018 | O15:H27 | + | + | − | − | Ground beef | GA | 2007 | |
| 20177 | O8:H16 | + | − | − | − | Ground beef | TN | 2002 | |
| N13844 | ONT:H51 | + | − | − | − | Pork chop | OR | 2007 | |
| N5577 | ONT:H46 | − | + | − | + | Ground beef | MD | 2005 | |
| N5578 | ONT:H46 | − | + | − | + | Ground beef | MD | 2005 | |
| N5789b | O15:H16 | − | + | − | + | Ground beef | MD | 2005 | |
| 23765 | ONT:H2 | − | + | − | − | Ground beef | OR | 2003 | |
| N2743 | O83:H8 | − | + | − | − | Ground beef | MD | 2004 | |
| N2746 | O83:H8 | − | + | − | − | Ground beef | MD | 2004 | |
| N4854 | ONT:H10 | − | + | − | − | Ground beef | MD | 2005 | |
| N5545 | ONT:H7 | − | + | − | − | Ground beef | MD | 2005 | |
| N11682 | O83:H8 | − | + | − | − | Ground beef | MD | 2006 | |
| N15432 | O83:H8 | − | + | − | − | Ground beef | OR | 2007 | |
| N11475 | O154:H9 | + | − | Chicken breast | GA | 2006 | |||
| N11537 | O2:H27 | + | − | Chicken breast | GA | 2006 | |||
| N11573 | O26:H9 | + | − | Chicken breast | GA | 2006 | |||
| N11575 | O123:H51 | + | − | Chicken breast | GA | 2006 | |||
| N12563 | ONT:H7 | + | − | Chicken breast | TN | 2006 | |||
| N11452 | ONT:H8 | + | − | Ground beef | GA | 2006 | |||
| N12148 | ONT:H8 | + | − | Ground beef | OR | 2006 | |||
| N12174 | O15:H2 | + | − | Ground beef | OR | 2006 | |||
| N12475 | O10:H2 | + | − | Ground beef | TN | 2006 | |||
| N11710 | O18:H16 | + | − | Pork chop | MD | 2006 | |||
| N12051 | O81:H7 | + | − | Pork chop | OR | 2006 | |||
a
Common virulence genes include stx1, stx2, eae, and EHEC hlyA for STEC and eae and bfp for EPEC.
b
This strain was negative for Vero cell cytotoxicity, but whether it could produce Stx was not tested by other assays. It was tentatively called STEC here based on the presence of stx.