McDonald's (NYSE:MCD) has confirmed that its beef patties were not to blame for the E. coli outbreak linked to Quarter ...

The company said it would put Quarter Pounders back on the menu, without the raw onions that were considered the likely ...

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

McDonald's says testing has ruled out beef patties as the source of the outbreak of E. coli poisoning tied to its Quarter ...

No E. coli was detected in samples of beef patties used in McDonald's Quarter Pounders that have been linked to a deadly ...

McDonald’s will resume selling Quarter Pounders in all restaurants in the coming week after considering new data regarding an ...

Colorado has seemingly eliminated one ingredient in the McDonald's Quarter Pounder hamburger E. coli outbreak as a cause for ...

LOS ANGELES -- Testing has ruled out beef patties as the source of the outbreak of E. coli poisoning tied to McDonald’s ...

Following a deadly E.coli outbreak tied to McDonald’s Quarter Pounders, the Colorado Department of Agriculture tested the chain's beef patties for the bacteria.

McDonald's says either fresh, slivered onions or beef patties used for the Quarter Pounder may be behind the outbreak. If onions are found to be the source of the E. coli outbreak, it would be the ...