Federal health agencies launched an active investigation following a multistate E. coli outbreak linked to raw milk cheese. The contamination has sickened 13 people across nine states, prompting a nationwide voluntary recall by the manufacturer on September 24, 2026.
According to updates from the Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA), the outbreak has led to severe health complications for multiple patients. Eight of the 13 infected individuals required hospitalization, and three patients developed hemolytic uremic syndrome (HUS), a serious and potentially life-threatening kidney condition often associated with certain strains of E. coli infections.
The geographic spread of the outbreak encompasses nine states: California, Colorado, Georgia, Kentucky, Michigan, Nevada, Oregon, Tennessee, and Utah. Public health investigators used epidemiological interviews to trace the source of the illnesses. Out of the individuals interviewed, nine ill people specifically reported consuming Sierra Nevada Graziers raw milk cheese prior to becoming sick.
Following these interviews, federal officials contacted the producer, Sierra Nevada Cheese Company, on September 24, 2026. The manufacturer cooperated with regulators and agreed to pull all Graziers raw milk cheese products from retail store shelves nationwide.
Raw Milk Cheese Safety and E. Coli Risks
Raw milk cheese is made from milk that has not been pasteurized-a process that uses heat to kill harmful bacteria. While proponents argue that raw milk cheeses retain unique flavors and natural microflora, they also carry a higher risk of foodborne pathogen contamination compared to products made from pasteurized milk.
Pathogens such as Shiga toxin-producing Escherichia coli (STEC) can survive the cheese-making and aging processes. Symptoms of an E. coli infection typically begin three to four days after consuming contaminated food and include:
- Severe stomach cramps
- Diarrhea (often bloody)
- Vomiting
- Low-grade fever
While most people recover within a week, some infections lead to severe complications like hemolytic uremic syndrome. HUS is characterized by easy bruising, decreased urination, and pallor, requiring immediate emergency medical care.
Consumer Guidance and Next Steps
Public health officials advise consumers, restaurants, and retailers to check their refrigerators and freezers for any recalled Sierra Nevada Graziers raw milk cheese products. These items should not be consumed and should be safely discarded or returned to the place of purchase for a refund.
Anyone experiencing symptoms of E. coli infection after consuming raw milk cheese should contact a healthcare provider immediately. Federal and state health agencies continue to monitor the outbreak and analyze supply chain data to prevent further infections.
