A ranch in the San Benito-Monterey County area is now the focus of the state Department of Health Services investigation. Samples taken from cattle on the ranch and stream water all come back showing the same strain of E-coli that was in the spinach.
Kevin Reilly with the department says they also found a match with samples taken from a wild pig.
"We do have some evidence that the wild pig population did have access to the fields through broken down fencing."
The pigs might have trampled the fences meant to separate them from a spinach field. But investigators say they’re still not ruling out other sources such as cattle or humans.