State health officials in Denver are working alongside the Centers for Disease Control and Prevention to address a foodborne outbreak of Shiga toxin-producing E. coli linked to McDonald’s Quarter Pounders sold across several states. The CDC has reported a total of 49 cases associated with this outbreak, including 26 in Colorado. Tragically, an older individual with preexisting health conditions in Colorado has died after contracting the illness.
In response to the outbreak, McDonald’s has voluntarily paused the production of Quarter Pounders in multiple states. The CDC is collaborating with state health departments, federal agencies, and McDonald’s to trace the source of the contamination. Preliminary investigations by the Food and Drug Administration suggest that onions, which are primarily used on Quarter Pounders, may be the source of the outbreak. The U.S. Department of Agriculture is also examining the beef patties used in the hamburgers.
Symptoms of infection from Shiga toxin-producing E. coli can include severe stomach cramps, diarrhea (often bloody), vomiting, and fever. In severe cases, the infection can lead to hemolytic uremic syndrome, a serious condition that may result in kidney failure and death.
Individuals who have recently consumed a McDonald’s Quarter Pounder and are experiencing these symptoms are advised to seek medical attention and contact their local public health agency.
E. coli bacteria are normally found in the intestines of humans and animals, with most strains being harmless. However, certain types that produce Shiga toxins can cause severe health issues. Symptoms of STEC infections typically appear three to four days after consuming contaminated food or drinks, but can manifest anywhere from one to ten days post-exposure.
Health officials recommend monitoring for symptoms and practicing good hygiene, which includes washing hands thoroughly after using the bathroom or handling food, and avoiding food preparation for others while exhibiting diarrhea.
Further updates will be released as additional information becomes available.