- Jay, Michele T;
- Cooley, Michael;
- Carychao, Diana;
- Wiscomb, Gerald W;
- Sweitzer, Richard A;
- Crawford-Miksza, Leta;
- Farrar, Jeff A;
- Lau, David K;
- O’Connell, Janice;
- Millington, Anne;
- Asmundson, Roderick V;
- Atwill, Edward R;
- Mandrell, Robert E
We investigated involvement of feral swine in contamination of agricultural fields and surface waterways with Escherichia coli O157:H7 after a nationwide outbreak traced to bagged spinach from California. Isolates from feral swine, cattle, surface water, sediment, and soil at 1 ranch were matched to the outbreak strain.