Diners at Red Lobster and Olive Garden restaurants in Iowa and Nebraska caught an intestinal illness after eating salad mix that came from Mexico, according to the U.S. Food and Drug Administration.
The federal agency said its investigators have traced the outbreak to four "illness clusters" of restaurants, which spokeswoman Theresa Eisenman later identified to CNN as Red Lobster and Olive Garden locations. The probe didn't find indications that any bags of salad mix with the rare type of parasite - known as cyclospora - were sold at U.S. grocery stores.
The tainted salad mix came from Taylor Farms de Mexico, "a processor of foodservice salads," according to the FDA.
Darden - the parent company for Olive Garden, Red Lobster and other restaurant chains such as LongHorn Steakhouse - described the August 2 announcement from the FDA as "new information."