A current outbreak of E. coli infections from spinach has brought the food borne illness to national attention. Last week, an E. coli outbreak forced supermarkets and restaurants to pull spinach from shelves and menus, but it also opened our eyes to the dangers of this potentially deadly bacteria. What is E.coli, and when do you need to worry about it?

http://www.sciencedaily.com/releases/2005/01/050104112451.htm