E. Coli Outbreak Linked to Onions on McDonald’s Quarter Pounders

An E. coli outbreak connected to onions used in McDonald’s Quarter Pounder hamburgers has sickened over 100 people across 14 states, according to the Centers for Disease Control and Prevention (CDC). Among those affected, 34 were hospitalized, four developed severe kidney complications, and one person in Colorado died.

The illnesses occurred between mid-September and late October, with Colorado reporting the highest number of cases at 30. Other affected states include Montana, Nebraska, and New Mexico, among others. Seven cases were linked to individuals who ate McDonald’s food while traveling.

Investigations traced the outbreak to slivered onions supplied by Taylor Farms in California. Although the U.S. Food and Drug Administration (FDA) found E. coli in onion samples from the supplier, the strain did not match the one causing the illnesses. As a precaution, McDonald’s temporarily stopped serving Quarter Pounders with onions in some areas but resumed sales after securing a new supplier.

The bacteria involved in this outbreak is known for causing serious health problems, including a potentially fatal kidney condition, particularly in young children. Symptoms of E. coli infection often appear within one to two days of consuming contaminated food and include fever, vomiting, diarrhea (sometimes bloody), and dehydration. Immediate medical attention is crucial for children under five showing signs of infection.

While the outbreak seems to be under control, federal officials urge vigilance regarding food safety, noting that E. coli-related illnesses result in thousands of hospitalizations and dozens of deaths in the U.S. annually.

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