The U.S. Food and Drug Administration continues to believe that slivered onions from a single supplier are the likely source ...

At least 104 people have been sickened, with 34 hospitalized, in an outbreak of E. coli food poisoning tied to slivered onions served on McDonald's Quarter Pounder hamburgers, federal health officials ...

The New Mexico Department of Health Scientific Laboratory in Albuquerque handles everything from E. coli to anthrax scares.

McDonald’s said it was taking “swift and decisive action” to control the outbreak that has sickened dozens of people, mainly ...

The E. coli infections, first reported on Sept. 27 in Colorado, were linked to the recent consumption of Quarter Pounder ...

McDonald's has paused Quarter Pounder sales in some states amid an E. coli outbreak, while foods ranging from smoked salmon ...

After an E. coli outbreak, McDonald’s stopped selling the Quarter Pounder in 12 states. The burger might take a hit for now, but its hold on customers will prevail, experts say. By Hank Sanders ...

A Colorado high school student is now hospitalized with acute kidney failure after eating a McDonald's Quarter Pounder.

McDonald's will resume selling Quarter Pounder hamburgers in all restaurants this week, as it was informed results of testing ...

Quarter Pounders without onions will return to Colorado, Kansas, Utah and Wyoming, where the burgers were removed from all ...

A push by McDonald's to revamp the Quarter Pounder in recent years — switching to fresh beef and pushing a marketing campaign complete with "I'd rather be eating a Quarter Pounder" stickers ...