McDonald’s E. Coli Outbreak Declared Over - The New York Times

McDonald’s E. Coli Outbreak Declared Over  The New York TimesUS closes investigation into E. coli outbreak linked to onions in McDonald's Quarter Pounders  The Associated PressAre onions safe to eat after the E. coli outbreak? What you must know  Fox NewsMcDonald's Cleared by CDC After Investigation into Lethal E. Coli Outbreak  PEOPLE