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Onions in McDonalds' Quarter Pounders Linked to E. Coli Outbreak Have Been Recalled

Medically reviewed by Carmen Pope, BPharm. Last updated on Oct 24, 2024.

By Robin Foster HealthDay Reporter

THURSDAY, Oct. 24, 2024 -- Just days after an E. coli outbreak tied to McDonald's Quarter Pounders was first announced, a company producing onions used in the burgers said it has issued a recall for its diced, peeled and whole onions.

The onions were produced at Taylor Farms Colorado and have been pinpointed by McDonalds as the source of the outbreak, which has already sickened 49 people in 10 states, killing one person and landing 10 more in the hospital.

In an email sent to the New York Times, food service distributor U.S. Foods, which helped supply the onions to McDonalds, said the onions were being recalled by Taylor Farms out of an "abundance of caution." Taylor Farms has not yet replied to the Times' request for a comment.

Most of the illnesses have been reported in Colorado and Nebraska, and one child developed a serious complication known as hemolytic uremic syndrome, according to the U.S. Centers for Disease Control and Prevention.

"This is a fast-moving outbreak investigation," the agency said in a food safety alert issued Monday. "Most sick people are reporting eating Quarter Pounder hamburgers from McDonald’s and investigators are working quickly to confirm which food ingredient is contaminated. McDonald’s has pulled ingredients for these burgers, and they won’t be available for sale in some states."

As the CDC noted at the time, information reviewed by the U.S. Food and Drug Administration had suggested slivered onions as the source of contamination.

In the meantime, McDonald’s has stopped using the onions, as well as quarter-pound beef patties, in several states while the investigation continues, the CDC added.

In a statement released Wednesday, McDonald's said initial findings had linked the onions to “a single supplier that serves three distribution centers.”

“We are working in close partnership with our suppliers to replenish supply for the Quarter Pounder in the coming weeks [timing will vary by local market],” the company said. “In the meantime, all other menu items, including other beef products [including the Cheeseburger, Hamburger, Big Mac, McDouble and the Double Cheeseburger] are unaffected and available.”

According to the FDA, McDonald’s has removed the slivered onions and quarter-pound patties from stores in Colorado, Kansas, Utah, Wyoming and portions of Idaho, Iowa, Missouri, Montana, Nebraska, Nevada, New Mexico and Oklahoma. In other states, Quarter Pounder burgers may not be available.

The FDA added that it "is working quickly to confirm that these onions are a source of this outbreak and to determine if these onions were served or sold at other businesses. McDonald’s has temporarily stopped using this type of onion in these states. Diced onions used at McDonald’s are not implicated in this outbreak."

However, the CDC noted the outbreak could eventually extend beyond the affected states.

E. coli infections include symptoms such as severe stomach cramps, diarrhea, fever and vomiting, which typically begin three or four days after exposure. Although most people recover without treatment within a week, others can develop serious kidney problems and require hospitalization, according to the CDC.

Anyone who becomes ill after eating a McDonald’s Quarter Pounder should get medical attention and tell the provider what they ate, the CDC stressed.

Disclaimer: Statistical data in medical articles provide general trends and do not pertain to individuals. Individual factors can vary greatly. Always seek personalized medical advice for individual healthcare decisions.

© 2025 HealthDay. All rights reserved.

Posted October 2024

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