Aquí un informe de la FDA, pero sobre un brote concreto, como el de los pepinos españoles, no representativo, pero ahí está
http://www.fda.gov/NewsEvents/Newsro.../ucm108873.htm
Otro:
Hay más... Que no digo que sea cierto, pero ahora intento tener más cuidadito con ellas.The most likely source of this disease-causing E. coli strain is contaminated ground beef. However, outbreaks have been linked to many other food items and beverages. Unpasteurized milk and juices are high risk. In recent years there have been many outbreaks linked to produce items such as lettuce and now spinach.
Read more: http://www.umm.edu/id/e_coli.htm#ixzz24miZ7heN