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McDonald’s shares dropped in extended trading on Tuesday after the Centers for Disease Control and Prevention said an E. coli outbreak linked to McDonald’s Quarter Pounder burgers has led to 10 hospitalizations and one death.
The company said initial findings from the ongoing investigation show that some of the illnesses may be linked to slivered onions — or fresh onions sliced into thin shapes — that are used in the Quarter Pounder and sourced by a single supplier that serves three distribution centers.
McDonald’s has instructed all local restaurants to remove slivered onions from their supply and has paused the distribution of that ingredient in the affected area.
Source: Phillips