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Authorities Confirm Taco Bell as Source of Explosive Diarrhea Parasite
US health authorities have confirmed that Taco Bell restaurants served lettuce contaminated with the parasite Cyclospora, linking the chain to a nationwide outbreak of diarrhoeal illness. The Centers for Disease Control and Prevention traced the contamination to lettuce sourced from Mexico and served at Taco Bell branches in Indiana, Kentucky, Michigan, Ohio and West Virginia, prompting a warning against eating shredded iceberg lettuce at those locations. The confirmation is significant given the scale of the outbreak, which has produced a record number of cases across dozens of US states.
The illness, cyclosporiasis, typically causes watery and sometimes explosive diarrhoea, though it is rarely life-threatening and can be treated with antibiotics. A record number of cases have now been reported across 31 states, and while experts believe multiple sources may be involved, the Food and Drug Administration has identified Taylor Farms of Salinas, California, as a supplier, a company previously linked to a 2013 Cyclospora outbreak and a 2024 E. coli outbreak involving McDonald's onions. Taco Bell says it has voluntarily removed the ingredient at affected restaurants and will stop using lettuce from the identified supplier, while officials caution that other brands or retailers could yet be implicated, noting Taylor Farms products are also sold through Target, Whole Foods, Walmart and Amazon Fresh.
In short
- CDC confirms Taco Bell lettuce as source of Cyclospora parasite outbreak
- Record cyclosporiasis cases reported across 31 US states
- Supplier Taylor Farms linked to prior 2013 and 2024 outbreaks
Explained simply
Cyclospora is a microscopic parasite that spreads through contaminated food or water and causes an illness called cyclosporiasis. The infection typically produces severe watery diarrhoea and abdominal pain, though it rarely causes serious complications and responds well to antibiotics. Outbreaks most often occur during warmer months when people consume more fresh produce.
The United States is currently experiencing its largest recorded outbreak of cyclosporiasis, with confirmed cases across 31 states. Parasites transmitted through food are taken seriously by health authorities because they spread rapidly through supply networks and can infect many consumers before the source is identified. This risk is particularly acute because infected individuals may not show symptoms for weeks, meaning contaminated products can circulate widely before warnings are issued.
The outbreak has been traced to contaminated lettuce from Taylor Farms, a California supplier that sources produce from Mexico and sells to restaurants and retailers, including Taco Bell, Whole Foods, Walmart, Target and Amazon Fresh. The company was previously implicated in a 2013 Cyclospora outbreak and a 2024 E. coli contamination from onions supplied to McDonald's. Authorities are investigating whether other products from this supplier sold through various retailers may also be contaminated.