Overview of the Outbreak
An E. coli outbreak connected to McDonald’s Quarter Pounder hamburgers has caused illness in at least 49 individuals across 10 U.S. states, according to the U.S. Centers for Disease Control and Prevention (CDC). Among those affected, one person has died, and 10 others have been hospitalized due to severe complications.
Affected States and Cases
The infections occurred between September 27 and October 11 and have spread across the following states:
- Colorado: 26 cases (including one death)
- Nebraska: 9 cases
- Iowa, Kansas, Missouri, Montana, Oregon, Utah, Wisconsin, and Wyoming: Remaining cases
A specific source of the contamination has not been conclusively identified, but most patients reported consuming Quarter Pounder hamburgers at McDonald’s before falling ill.
Focus of the Investigation
Federal health authorities, including the CDC, Food and Drug Administration (FDA), and U.S. Department of Agriculture (USDA), are investigating the outbreak. The investigation is focusing on two main ingredients:
- Onions: Slivered onions used in the Quarter Pounders are suspected to be the primary source of contamination.
- Beef patties: USDA officials are also looking into the hamburger patties.
McDonald’s Response
In response to the outbreak, McDonald’s has taken proactive measures to address food safety concerns:
- Halted the distribution of slivered onions from the suspected supplier.
- Temporarily removed Quarter Pounders from menus in the affected states and neighboring areas, including Idaho, Nevada, New Mexico, and Oklahoma.
- Issued a public statement emphasizing their commitment to food safety.
Symptoms of E. Coli Infection
E. coli bacteria can cause serious illness, with symptoms such as:
- Fever
- Stomach cramps
- Bloody diarrhea
In severe cases, especially in young children, E. coli O157can lead to acute kidney failure.
Impact on McDonald’s and the Fast Food Industry
This outbreak adds to an already difficult year for McDonald’s, whose global sales have been impacted by inflation. The company’s shares fell by 9% following the CDC’s announcement, further adding to its challenges in 2023.
Food Safety
This E. coli outbreak highlights the importance of food safety and proper investigation into potential contamination sources. Consumers are advised to remain cautious and seek medical help if they develop symptoms after consuming food from McDonald’s or other sources.