A parasite tied to shredded greens is spreading fast — and health officials say the numbers could still climb
A supplier’s shredded iceberg lettuce has become the center of a growing food safety scare, with health officials now connecting it to a cyclosporiasis outbreak rippling through several Midwest states. The parasite, tied to select Taco Bell locations, has triggered a wave of illness that’s already drawing comparisons to some of the largest outbreaks the country has ever tracked.
A Regional Outbreak With National Attention
The lettuce in question came from a major produce supplier that distributes to grocery stores and restaurants nationwide. While officials describe this particular cluster as regional — concentrated in Michigan, Ohio, West Virginia and Kentucky — the reach of the supplier means the full scope may not yet be clear. Investigators say the tainted greens made their way into select Taco Bell restaurants in those states, though other locations receiving the same produce haven’t been ruled out.
Federal data released this week shows nearly 7,000 cyclospora cases confirmed or under investigation nationally since May, a staggering jump from the same stretch last year. More than 140 people have been hospitalized so far.
The Outbreak by the Numbers
Michigan has emerged as the hardest-hit state, logging over 4,300 cases linked to the investigation. State health officials say they’ve interviewed more than 1,000 residents trying to trace the source, and while they stop short of confirming every single case ties back to the same contamination, the sharp, concentrated spike points strongly to one shared culprit. If confirmed, this would mark the largest cyclospora outbreak the U.S. has ever recorded.
Neither the restaurant chain nor the supplier has issued a detailed public response, though the chain confirmed this week it pulled select ingredients from certain locations as a precaution while the investigation continues.
How the Illness Spreads
Unlike many foodborne illnesses, cyclosporiasis doesn’t pass person to person. It spreads through contaminated food or water, and fresh produce has historically been a common source. Anyone infected may deal with watery diarrhea, cramping and bloating that can drag on for weeks without treatment, making early detection critical for anyone experiencing symptoms after eating at an affected location.
Health officials note that multiple investigations are running simultaneously right now. Some are directly tied to the major Midwest cluster, others are isolated to single states, and a number of cases haven’t been connected to any outbreak at all — a sign that the picture is still very much developing.
A History Worth Watching
This isn’t the supplier’s first brush with a contamination scare. The same company’s produce has been connected to prior outbreaks, including an E. coli scare tied to onions in 2024 and a separate cyclospora outbreak linked to lettuce more than a decade ago. That track record has some food safety advocates calling for tighter oversight of how leafy greens are processed and distributed before they reach store shelves and restaurant kitchens.
For now, the restaurant chain says it’s cooperating with health officials and monitoring the situation closely, while investigators continue working to pin down exactly how far the contamination traveled. Anyone who’s eaten at an affected location recently and is experiencing prolonged digestive symptoms is being urged to check in with a doctor, especially given how long recovery can take without proper care.
As the outbreak numbers continue to climb week over week, the coming days are expected to bring more clarity — and potentially, more locations added to the list.
Source: CNN
