Update: More Illnesses Have Been linked To The McDonald’s E. Coli Outbreak

November 21, 2024

The McDonald’s E. coli outbreak continues to expand, with health officials now reporting 104 cases across 14 states. 

This marks a significant increase from the previously reported 75 cases, as the Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA) continue their investigation into the outbreak linked to McDonald’s Quarter Pounder burgers

Based on reader out reach we have updated this story:

Federal health officials have updated the number of illnesses linked to the McDonald’s outbreak, reporting that 104 people have become ill from eating Quarter Pounders.

Outbreak Details

The outbreak, which began in late September, has resulted in 34 hospitalizations and one death. Four individuals have developed hemolytic uremic syndrome (HUS), a severe kidney condition that can be life-threatening. 

The affected individuals range in age from 13 to 88 years old, with the majority being men.


Source of Contamination

Epidemiologic and traceback data point to slivered onions served on McDonald’s Quarter Pounder burgers as the likely source of contamination. Taylor Farms, the supplier of these onions, initiated a voluntary recall of yellow onions on October 22, 2024. 

In response, McDonald’s removed the suspect slivered onions from its locations in at least 12 states.

McDonald’s Response

The fast-food giant has taken swift action to protect its customers. McDonald’s has reintroduced Quarter Pounders without slivered onions to the menus of hundreds of impacted restaurants after testing ruled out beef patties as the source of the outbreak. 

The company has also found an alternate supplier for approximately 900 restaurants that had temporarily stopped serving Quarter Pounders with slivered onions.

Ongoing Investigation

The FDA, CDC, and state partners continue to investigate the outbreak, collecting onion samples and environmental samples from McDonald’s stores and distribution centers. While one sample of recalled onions tested positive for E. coli, it did not match the outbreak strain.

Health officials advise anyone who has consumed a McDonald’s Quarter Pounder and experiences severe E. coli symptoms to contact their healthcare provider. 

As the investigation continues, the CDC maintains that the risk to the public is low, given that the affected onions have been recalled and are past their shelf life.

Update: The outbreak is linked to slivered onions on McDonald’s Quarter Pounder burgers. McDonald’s has stopped sourcing onions from Taylor Farms, the California-based producer that distributed the onions. Other fast food chains, including Taco Bell, Burger King, KFC, and Pizza Hut, have also removed fresh onions from the menu at select locations wrote Today.

Editors Note: We’d like to thank our readers who brought more insight and information for this update of the article

Photo credit: Wiki.

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