A deadly outbreak spurred removal of onions by a major food supplier in the Mountain West. Taco Bell, KFC, Burger King and Pizza Hut have stopped serving onions at various locations. Onions, Food Contamination and Poisoning, E Coli (Bacteria), Recalls and Bans of Products, Deaths (Fatalities), Fast Food Industry, Hamburgers, Regulation and Deregulation of Industry, Food and Drug Administration, Taylor Farms, Agriculture and Farming, McDonald’s Corporation, Yum Brands Inc, United States A deadly outbreak spurred removal of onions by a major food supplier in the Mountain West. Taco Bell, KFC, Burger King and Pizza Hut have stopped serving onions at various locations. NYT > Business