McDonald’s on Sunday said that beef patties were not the source of E. Coli outbreak linked to Quarter Pounder hamburgers in ...

As of Friday, the outbreak had expanded to at least 75 people sick in 13 states, federal health officials said.

Preliminary data implicates slivered onions used on Quarter Pounders as a possible source, and recent testing rules out beef ...

The US FDA is investigating whether the onions in McDonald’s Quarter Pounder burgers are the source of the outbreak.