McDonald’s rules out beef patties as source of E. coli outbreak New York Post McDonald’s to resume selling Quarter Pounders in all restaurants after beef patties in Colorado test negative for E. coli CNNWhere People Got Sick: E. coli Outbreak, McDonald’s Quarter Pounders – October 22, 2024 CDCOnion recall 2024: 75 sickened in 13 states as onions are pulled from menus at McDonald’s, Burger King, KFC a NJ.comMcDonald’s Quarter Pounder burgers to return to restaurants affected by E. coli outbreak CNBC