McDonald’s says testing has ruled out beef patties as the source of the outbreak of E. coli poisoning tied to its Quarter ...

Federal health officials believe that the E. coli likely came from the raw slivered onions inside the Quarter Pounder.

The fast-food chain has announced that its beef patties will be returning to locations affected by the E. coli outbreak, but onions won't.

McDonald's removed the Quarter Pounder from their menu at 900 stores due to an E. Coli outbreak. As a recall is in effect, ...