Luscious romaine lettuce, the base of a classic Caesar salad, is always a healthy food choice, right? Usually, the answer is “yes.” However, since November, more than 60 cases of E. coli, and two deaths, have been documented in 13 states—including Illinois–and in Canada. While the Centers for Disease Control have not yet confirmed the culprit, romaine lettuce is the leading suspect. “E. coli is a variety of bacteria naturally found in our bodies.