E. Coli Outbreak Tied to McDonald's Quarter Pounder Burgers

Investigators looking into the serious McDonald’s E. coli outbreak are zeroing in on uncooked onions found on the chain's Quarter Pounders. McDonald’s is temporarily removing the burger from restaurants in Colorado, Kansas, Utah, and Wyoming. The president of McDonald's is assuring its customers, stating, "It's important to note that the majority of states and majority of menu items are not affected."