The U.S. government said Tuesday it has closed its investigation into an E. coli outbreak tied to McDonald's Quarter Pounder hamburgers after determining there is no longer a safety risk.
The outbreak, which was first reported Oct. 22, sickened at least 104 people in 14 states, including 34 who were hospitalized, according to the U.S. Food and Drug Administration. One person in Colorado died and four people developed a potentially life-threatening kidney disease complication.
