Quarter pounders have been returned to McDonald's menus after an E.coli outbreak in the US, but the fast-food giant has warned cases are still expected to rise. Earlier this month, there was an outbreak of the disease linked to a facility that supplied 900 McDonald's restaurants. One person died and 75 others were left sick, as other fast-food chains, including Burger King, KFC, Pizza Hut and Taco Bell, took action as well, pulling the contaminated ingredient, slivered onions, from their menu. Image: File p ...