Onions are likely source of E. coli outbreak linked to McDonald’s, federal agencies say; 15 additional cases reported

Fresh slivered onions served on McDonald’s Quarter Pounders were the likely source of an E. coli outbreak that has led to one death and illnesses in more than a dozen states, the US Centers for Disease Control and Prevention said Wednesday.

​ Fresh slivered onions served on McDonald’s Quarter Pounders were the likely source of an E. coli outbreak that has led to one death and illnesses in more than a dozen states, the US Centers for Disease Control and Prevention said Wednesday. Read More Breaking News, Latest News and Videos | CNN