The first case of this particular food-borne illness was reported on January 28.

CNN: Officials seek source of salmonella outbreak

There were no reported outbreaks of food-borne illness related in the Roanoke area at the time of the study.

CNN: Soda fountains contained fecal bacteria, study found

That represents about 23% of the 9.6 million cases of food-borne illness each year, a study released Tuesday by the Centers for Disease Control and Prevention shows.

WSJ: Vegetables Are the Main Cause of Food-Borne Illness, CDC Study Finds

One in six Americans gets sick from a food-borne illness every year, and when those instances can be traced to a single cause, in more than half of cases it's a restaurant.

CNN: Fight flu, give restaurant workers paid sick leave