A recent E. coli outbreak linked to McDonald's Quarter Pounders has left one person dead and at least 10 hospitalized, with dozens more affected across various states. The CDC has launched an investigation into the incident, which is believed to be connected to tainted onions used in the preparation of the burgers. As a precautionary measure, certain McDonald's locations have paused serving slivered onions and Quarter Pounder patties.
Source: https://www.cnet.com/news/everything-to-know-about-the-deadly-mcdonalds-e-coli-outbreak/#ftag=CAD590a51e