Consumer

McDonald’s Is Racing to Contain Fallout From E. Coli Outbreak

Illnesses appear to be linked to onions in Quarter Pounders
The burger chain’s shares sank, erasing year-to-date gains

McDonald’s Burgers Linked to E. Coli Outbreak: CDC

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By Daniela Sirtori, Deena Shanker, and Curtis Heinzl

October 23, 2024 at 4:50 PM UTC

Updated on

October 23, 2024 at 8:25 PM UTC

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McDonald’s Corp. is trying to contain the fallout from a severe E. coli outbreak that appears to be linked to the slivered onions in its popular Quarter Pounder sandwiches.

The US Centers for Disease Control and Prevention on Tuesday announced an investigation into a raft of illnesses across 10 states from Sept. 27 through Oct. 11. The illnesses impacted dozens of people and led to one death and 10 hospitalizations.