For weeks, the source behind a rising wave of “explosive diarrhea” cases across the Midwest has been a mystery. This is beginning to change: a specific product, from a specific supplier, associated with a specific restaurant chain, is now at the center of investigation.
Taylor Farms’ shredded iceberg lettuce sold at some Taco Bell restaurants has been linked to a cyclosporiasis outbreak in the United States, according to a source familiar with the investigation. It is the most specific bullet reported so far in a months-long investigation.
Key takeaways
- Taylor Farms shredded iceberg lettuce, which is served at some Taco Bell locations, has been linked to the outbreak by a source close to the investigation — though it has not been officially confirmed by the CDC or Food and Drug Administration.
- Cases linked to Taco Bell are concentrated in four Midwestern states — Michigan, Ohio, West Virginia and Kentucky — with at least 400 cases linked to this specific cluster.
- Michigan alone has now reported more than 4,300 cases, and confirmed cases nationwide are more than six times higher than they were at this time last year.
- Taco Bell has voluntarily and temporarily recalled some ingredients from the affected locations as a precaution, but has not issued a recall and says officials have not confirmed the connection directly.
- Taylor Farms has been linked to foodborne illness outbreaks before, including E. coli in cut onions in 2024 and Cyclospora in lettuce in 2013.
How did lead appear?
The Michigan Department of Health interviewed more than 1,000 patients as part of its investigation, and lettuce or salad greens kept surfacing as a common thread. State officials say they can’t say with certainty that every illness is due to the same exposure, but the sharp and concentrated rise in cases “strongly suggests” that most of these illnesses share a common source — which, if confirmed, would make this the primary cause. The largest outbreak of Cyclospora Registered in the United States. The source cluster specifically linked to Taco Bell and Taylor Farms accounts for at least 400 of the total cases, and is concentrated in the same four states where the affected restaurant locations are located — though officials warn that the product may have been distributed to other places as well.
What Taco Bell and Taylor Farms said
Taco Bell stopped short of confirming any connection, telling reporters that “public health officials have not confirmed a connection to Taco Bell or any specific ingredient, supplier, restaurant or retailer,” while noting that it has “voluntarily and temporarily removed limited ingredients at select restaurants as a precaution.” Neither Taco Bell nor Taylor Farms responded to requests for comment on more specific reports linking shredded lettuce directly to their supply chain. Taylor Farms, a major supplier to grocery stores and restaurant chains across the country, has a long track record here: The company’s products have been linked to an E. coli outbreak linked to chopped onions in 2024, and to a Cyclospora outbreak involving lettuce in 2013 — adding to a broader pattern of foodborne illness incidents linked to the company over the past decade and a half.
Why is Cyclospora particularly difficult to track?
Unlike bacteria such as E. coli or Salmonella, Cyclospora is a parasite that spreads specifically through food or water contaminated with human feces, rather than from person to person. Infectious disease specialists point out that they have historically appeared in things like contaminated camp water or swimming areas, but in recent years they have increasingly been traced back to the food supply itself — especially leafy greens and other produce eaten raw. This makes tracking it to a single farmer or facility particularly slow, since the parasite can enter the supply chain at multiple points, and testing for it is not part of routine stool panels — doctors must specifically request it.
What does this mean if you eat at Taco Bell or buy packaged lettuce
This is still an active and unconfirmed investigation, and not an official recall — so there are no official instructions to avoid Taco Bell or Taylor Farms products specifically. However, the same general precautions apply regardless of the source: buy whole heads of lettuce rather than cut or packaged versions, wash produce well, and cook anything you can rather than eating it raw, because heat destroys the parasite completely. If you have eaten at one of the affected Taco Bell locations in the Midwest recently and developed sudden watery diarrhea, mention it to your doctor and specifically request a Cyclospora test.
Sources: CNN, “Ice lettuce sold at Taco Bell linked to Cyclospora outbreak” (July 16, 2026); Fox News, “Taco Bell Cyclospora Outbreak: Doctors Say Whether Lettuce Is Safe to Eat” (July 2026); NBC News, “Nearly 7,000 cases of cyclosporiosis confirmed or under investigation nationwide, according to Centers for Disease Control and Prevention” (July 2026); Michigan Department of Health and Human Services outbreak updates.
