Parasite Lettuce Nightmare Hits Taco Bell

A parasite outbreak tied to shredded iceberg lettuce has sickened more than 7,000 people across 34 states — making it the largest such outbreak in the United States since 1997.

Story Highlights

The Centers for Disease Control and Prevention (CDC) linked shredded iceberg lettuce served at Taco Bell locations in five states to a Cyclospora outbreak, with over 1,644 people reporting Taco Bell exposure.
The Food and Drug Administration (FDA) traced the lettuce to a single supplier in central Mexico — identified by federal health officials as Taylor Farms.
Taylor Farms voluntarily pulled all iceberg lettuce from central Mexico off the U.S. market, though the company says no Taylor Farms-branded salads or kits are involved.
The Taco Bell cases are only a portion of a much larger outbreak — over 5,100 additional cases are still under investigation across the country.

What Is Cyclospora and Why Does It Matter

Cyclospora is a microscopic parasite found in contaminated food or water. It causes cyclosporiasis, an intestinal illness marked by weeks of severe, watery diarrhea, cramping, fatigue, and nausea. It does not spread from person to person. The only way to get it is by eating or drinking something contaminated. As of July 2026, the outbreak has led to at least 141 hospitalizations, according to reporting tied to CDC outbreak data.

The CDC officially named this outbreak “Cyclospora Outbreak Linked to Shredded Iceberg Lettuce.” Investigators in Michigan interviewed 190 sick patients who ate at Taco Bell. Nine out of ten of them reported eating iceberg lettuce. That kind of exposure rate is what drives federal traceback investigations toward a single source.

How the Lettuce Was Traced to a Mexico Supplier

The FDA ran a traceback investigation and identified a single supplier of iceberg lettuce from Mexico used by the affected Taco Bell locations. Federal health officials identified that supplier as Taylor Farms, a major produce company based in Salinas, California. The FDA also increased border screening for that company’s lettuce. The outbreak strain was traced specifically to Taylor Farms’ facility in Guanajuato, in central Mexico, according to multiple news reports.

Taylor Farms responded by voluntarily removing all iceberg lettuce sourced from central Mexico from the U.S. market. The company stated the implicated farm represents less than 1% of the U.S. iceberg lettuce supply. Taylor Farms also noted that no branded salads or kits carry iceberg lettuce and said none of its branded products are connected to this outbreak. The FDA has not yet issued a formal public statement naming Taylor Farms directly, though a source familiar with the investigation confirmed the identification to NBC Bay Area.

A Troubling Pattern With the Same Supplier

This is not the first time Taylor Farms has been at the center of a major foodborne illness outbreak. In 2013, the CDC and FDA linked salad mix from Taylor Farms’ same Guanajuato facility to a Cyclospora outbreak that sickened more than 640 people across 25 states, with cases tied to Olive Garden and Red Lobster restaurants. In 2024, Taylor Farms supplied the slivered onions linked to an E. coli outbreak that sickened more than 100 people across 14 states and was connected to McDonald’s Quarter Pounders.

Taylor Farms has expanded a voluntary recall of its iceberg lettuce products sourced from central Mexico because of a potential link to the multistate cyclospora outbreak that has sickened people across the U.S. https://t.co/jOhjtr2izt

— WSLS 10 (@wsls) July 18, 2026

That pattern raises a fair question that people across the political spectrum are asking: why does the same supplier keep turning up at the center of major outbreaks? Food safety experts note that tracing contamination in fresh produce is genuinely difficult. Distribution chains are complex, and time passes before investigators can act. A University of California, Davis professor pointed out the challenge of pinning an outbreak to a single source given how produce moves through the supply system. Still, three major outbreaks in roughly 13 years tied to the same company is a track record that demands answers — and so far, neither Taylor Farms nor Taco Bell’s parent company, Yum! Brands, has responded to media questions about the current outbreak. That silence is not reassuring to the millions of Americans who simply want to know if their food is safe.