E. Coli Outbreak Hits McDonald's Quarter Pounder

A deadly E. coli outbreak linked to McDonald's Quarter Pounder hamburgers has emerged, affecting 49 people across 10 states. The outbreak, primarily in Colorado, has led to one death and 10 hospitalizations. Investigations are focusing on slivered onions and fresh beef patties as potential sources.

A deadly E. coli outbreak linked to McDonald's Quarter Pounder hamburgers has resulted in one casualty and 49 infections across 10 states, with Colorado being the hardest hit, the U.S. Centers for Disease Control confirmed on Tuesday.

The outbreak involves the severe E. coli O157:H7 strain, notorious for past incidents like the 1993 Jack in the Box outbreak. As a result, McDonald's stock saw an approximately 6% dip in after-hours trading.

While investigations continue, McDonald's has removed suspect ingredients from its stores in affected states. Legal expert Bill Marler noted onions as a recurring source of similar outbreaks, while beef usually poses less of a contamination risk.

(With inputs from agencies.)