When the Food and Drug Administration (FDA) issued a warning to consumers on Thursday about E. coli contamination in bagged spinach, it didn't come as a surprise to Michael Doyle. So far, about 100 people have fallen ill and one death has been connected to the dangerous E. coli 0157:H7 bacterial infection, and the director of food safety at the University of Georgia says that outbreaks like this one will only continue if produce manufacturers don't change their practices.