A preliminary investigation suggests raw slivered onions served on Quarter Pounders are a likely source of the outbreak.

McDonald’s Corp. was accused of product liability, negligence, and breach of implied warranties in a lawsuit filed in ...

An E. coli outbreak linked to a popular McDonald’s menu item surged in 10 states, including Utah, according to the U.S.

The Colorado Department of Public Health and Environment suspects all McDonald's locations in the state "received ingredients ...

McDonald's has removed the Quarter Pounder from its menu in some states amid an E. coli outbreak. See what states are ...

McDonald’s Corp. is trying to contain the fallout from a severe E. coli outbreak that appears to be linked to the slivered onions in its popular Quarter Pounder sandwiches.

An E. coli outbreak has been linked to McDonald's Quarter Pounders, according to the Centers for Disease Control and ...

CHICAGO, Oct 23 (Reuters) - Chicago Mercantile Exchange cattle futures turned lower on Wednesday, amid a flurry of technical selling and uncertainty whether consumer demand for beef would chill after ...

The U.S. Centers for Disease Control and Prevention says the outbreak has sickened at least 49 people in 10 states. One death ...

One Mesa County resident is dead, and at least nine others are sick, from an outbreak of Shiga toxin-producing E. coli cases likely originating from McDonald’s Quarter Pounders.