Illnesses linked to onions served on Quarter Pounders have been detected in 14 states, and infection killed one person

Summary

An E. coli outbreak linked to slivered onions on McDonald’s Quarter Pounders has sickened at least 104 people across 14 states, hospitalized 34, and led to one death in Colorado.

The CDC traced the contamination to onions from Taylor Farms’ Colorado facility, prompting McDonald’s to temporarily remove Quarter Pounders from select locations and halt onion sourcing from the supplier.

Other chains, including KFC, Pizza Hut, Taco Bell, and Burger King, also removed onions from menus as a precaution. The CDC states the public risk remains low.