Slivered onions served on McDonald's items including Quarter Pounder hamburgers were the likely source of an E. coli outbreak that has sickened at least 90 people, the U.S. Centers for Disease Control and Prevention said on Wednesday.
Slivered onions served on McDonald's items including Quarter Pounder hamburgers were the likely source of an E. coli outbreak that has sickened at least 90 people, the U.S. Centers for Disease Control and Prevention said on Wednesday.