Thu, 11/14/2024 - 12:20 Gizmodo People in at least 14 states caught a nasty strain of E. coli from tainted onions used in McDonald's Quarter Pounders, though the immediate danger has likely now passed. Tags health, e. coli, Fast Food, Food Safety, foodborne illnesses, mc donald's, outbreaks Source The McDonald’s E. Coli Outbreak Was Worse Than We Thought