The Quarter Pounder is back on the menu this week at all McDonald's locations following an E. coli outbreak linked to onions used in its burgers, though the company warns "case counts will grow." ...

Here’s a map that shows where the 75 people affected by the outbreak were located along with which states have temporarily stopped selling Quarter Pounder hamburgers either in portions of the ...

A food poisoning outbreak tied to McDonald’s Quarter Pounders was caused by a common type of E. coli bacteria that can cause serious illness and death. Particularly vulnerable are young ...