2024 McDonald's E. coli outbreak
| 2024 McDonald's E. coli outbreak | |
|---|---|
U.S. states affected by outbreak | |
| Bacteria strain | Escherichia coli O157:H7 |
| Source | Slivered onions used on Quarter Pounders at McDonald's restaurants |
| Location | United States |
| First reported | October 22, 2024 |
| Date | September 12 – October 21, 2024 |
| Confirmed cases | 104 |
| Hospitalized cases | 34 |
Deaths | 1 |
The 2024 McDonald's E. coli outbreak was an outbreak from September to October 2024 involving contaminated slivered onions on Quarter Pounders sold at McDonald's stores in 14 U.S. states. At least 104 people contracted Escherichia coli, and one person died.