At least 104 people have been sickened, with 34 hospitalized, in an outbreak of E. coli food poisoning tied to onions served on McDonald's Quarter Pounder hamburgers, federal health officials said Wednesday.
Cases have been detected in 14 states, according to an update from the U.S. Centers for Disease Control and Prevention. One person died in Colorado and four people have developed a potentially life-threatening kidney disease complication.
