“Every few weeks, it seems, deadly germs turn up in the food supply. Heather Whybrew, a college student in WashingtonState, became gravely ill after eating a salad in her school cafeteria. Carl Ours, of Ohio, was temporarily paralyzed after eating chili dogs and drinking beer. Mari Tardiff, of California, spent three months on life support after she drank unpasteurized milk. Is it becoming more dangerous to eat?...”