How Did E. Coli Get Into Nestle's Cookie Dough?

How Did E. Coli Get Into Nestle's Cookie Dough?

USA Today is reporting that the FDA is “stumped” by the presence of E. coli 0157:H7 in Nestle Tollhouse Cookie Dough, which was recalled last week. How does bacteria normally associated with raw ground beef find its way into our buckets of delicious cookie dough? Some speculation, inside.