FDA and CDC Continue Probe Into Listeria Outbreak Linked to Requeson Soft Cheese

Federal health agencies are continuing an investigation into a multi-state outbreak of Listeria monocytogenes infections, tied to requeson, a soft cheese similar to ricotta. The U.S. Food and Drug Administration (FDA) and the U.S. Centers for Disease Control and Prevention (CDC), working with state and local partners, are tracking illnesses and testing food and environmental samples to identify the source and extent of contamination. As the inquiry progresses, multiple recalls have expanded to cover additional products and brands, including cheeses that may have been repackaged or relabeled before reaching stores and restaurants.

Consumers are being urged to stop using recalled cheese products immediately, check refrigerators and freezers for items included in the recalls, and avoid cross-contamination when handling affected goods. Health officials also emphasize that people at higher risk for severe listeriosis—such as pregnant individuals, older adults, and those with weakened immune systems—should avoid queso fresco-type cheeses.

What products are involved

The outbreak investigation centers on requeson cheeses produced by Clover Hill Dairy, LLC. La Ceiba Foods Latin Market Inc. issued a recall for requeson products marketed under additional brands, and Clover Hill Dairy expanded its recall to include all products manufactured at the company’s facility, which may include cheeses distributed under different names.

Separately, a distributor recall covered requeson products sold at retail locations in New York during a defined period. Because some products may have been repackaged or relabeled, officials advise consumers to use manufacturer and product identification details when available.

How serious illness can be

Symptoms of listeriosis can begin within about two weeks of exposure, though onset may occur as early as the same day or as late as 10 weeks later. Mild illness can include fever, muscle aches, nausea, tiredness, vomiting, and diarrhea. More severe disease may involve headache, stiff neck, confusion, loss of balance, and seizures.

Latest findings from testing and case information

Recent updates indicate that multiple requeson and environmental samples collected by Maryland partners tested positive for Listeria monocytogenes and matched the outbreak strain. CDC reported a total of 12 illnesses associated with the outbreak strain across four states, with hospitalizations and one reported death.

Recommendations for consumers and at-risk groups

• Do not eat, sell, or serve recalled cheese.
• Check for recalled items in refrigerators and freezers; return them to the place of purchase or discard them.
• Clean and sanitize surfaces and containers that may have touched recalled cheese to reduce the risk of spreading contamination.
• If you are pregnant, age 65 or older, or have a weakened immune system, avoid queso fresco-type cheeses, including soft ricotta/requeson.
• If you develop symptoms consistent with listeriosis, contact a healthcare provider promptly.