McDonald's has proactively removed the slivered onions and beef patties used for the quarter pounder hamburgers from stores in the affected states while the investigation continues, the company said.

McDonald's Quarter Pounder hamburgers has killed one and sickened at least 49 people across 10 states of the United States, ...

The E. coli outbreak, which began in late September, spans 10 western states with most of the 49 cases concentrated in ...

McDonald's shares dropped more than 9% after the CDC said one person died and ten others were hospitalized in connection with ...