A significant outbreak of cyclosporiasis, caused by the parasite Cyclospora cayetanensis, has been linked to iceberg lettuce grown in central Mexico and supplied by Taylor Farms to Taco Bell. The U.S. Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) are actively investigating the contamination, which has sickened dozens across at least five states. The probe has led to a recall of affected products, inspections of farms and processing facilities, and a warning to consumers to avoid certain lettuce items.

Outbreak Details and Scope

According to the CDC, the outbreak has been traced to iceberg lettuce from Mexico used by Taco Bell. As of late July 2026, cases have been reported in five states, though the exact number of illnesses remains under investigation. The FDA has confirmed that a sample of Taylor Farms lettuce — not included in the initial recall — tested positive for Cyclospora, indicating the contamination may be more widespread. The agency is now working with Mexican authorities to inspect farms and a lettuce shredding facility to determine the source and distribution of the contaminated produce.

“The F.D.A. is planning to inspect farms and a lettuce shredding facility to determine how lettuce supplied by Taylor Farms to Taco Bell became contaminated and where it was shipped,” reported The New York Times.

Taylor Farms, based in Salinas, California, has voluntarily recalled iceberg lettuce products distributed in 27 states. The recall includes lettuce used in Taco Bell restaurants as well as products sold at major retailers such as Target, Whole Foods, Walmart, and Amazon Fresh, as noted by the New York Post. Sysco, a major food distributor, has also removed the affected lettuce from its supply chain.

Corporate and Regulatory Response

Taco Bell has responded to the outbreak by cooperating with health authorities and removing the implicated lettuce from its restaurants. In a statement, the company emphasized its commitment to food safety and customer health. Taylor Farms has similarly issued recalls and halted production from the implicated Mexican farm.

The FDA has issued an urgent warning advising consumers not to eat Taco Bell lettuce in the affected states. The agency is also expanding its investigation to include other potential sources of contamination. Meanwhile, the Mexican government has launched its own investigation, with multiple ministries looking into the Cyclospora link to the farm in central Mexico, as reported by Reuters and Newsmax.

Historical Context and Expert Commentary

This is not the first time Taylor Farms or Taco Bell have been associated with a Cyclospora outbreak. According to food safety attorney Bill Marler, who has represented victims in previous outbreaks, “The Cyclospora Outbreak Now Has Two Names on It — Taylor Farms and Taco Bell. Both Have Been Here Before and So Have I.” Marler notes that similar outbreaks occurred in 2013 and 2018, raising questions about persistent food safety gaps in the produce supply chain.

Cyclospora is a microscopic parasite that causes cyclosporiasis, an intestinal illness characterized by watery diarrhea (sometimes explosive), loss of appetite, weight loss, stomach cramps, nausea, and fatigue. Symptoms typically appear about a week after consuming contaminated food or water and can last several weeks if untreated. The infection is treatable with antibiotics, but it can be severe in immunocompromised individuals.

Broader Implications and Consumer Advice

The outbreak has sparked broader discussions about food safety and the vulnerability of imported produce. Some experts warn that Cyclospora can persist in the environment and may be underdiagnosed, making outbreaks harder to detect. The FDA has reinstated scientists at its food safety labs, a move that may bolster future surveillance and response capabilities.

Consumers are advised to check their refrigerators for recalled lettuce products and to discard them immediately. Symptoms of cyclosporiasis should be reported to a healthcare provider. The CDC recommends thoroughly washing all produce, though note that Cyclospora may be resistant to standard washing methods.

What You Can Do

• Check for recalls: Look for Taylor Farms iceberg lettuce products with a use-by date through July 2026.
• Monitor symptoms: Seek medical attention if you experience prolonged diarrhea, especially after eating Taco Bell or store-bought lettuce.
• Stay informed: Follow updates from the FDA and CDC for the latest outbreak information.

As the investigation continues, the FDA and CDC are working with Mexican authorities to trace the contamination to its source and prevent future outbreaks. The incident serves as a stark reminder of the complexities of the global food supply chain and the importance of robust food safety protocols.