Over 400 cyclosporiasis cases have been confirmed across four midwestern states, with federal agencies struggling to identify the contaminated food source. Public health officials urge consumers to avoid fresh produce without cooking or peeling, while Taco Bell temporarily removed ingredients amid the outbreak.
As the cyclosporiasis outbreak escalates, public health officials remain unable to pinpoint the exact food source, leaving consumers navigating a web of uncertainty. Over 400 confirmed cases have been reported across four midwestern states—Michigan, Ohio, West Virginia, and Kentucky—as of July 13, 2026, according to the Centers for Disease Control and Prevention (CDC).
Uncertain Source, Widespread Concern
Despite ongoing investigations, federal and state health officials have yet to identify a specific food item linked to the outbreak. The CDC and U.S. Food and Drug Administration (FDA) are collecting data from sick individuals, including details about their diets in the week before illness onset. Current results point to lettuce or salad greens as a potential source, although other food items cannot be completely ruled out, Michigan health officials stated, urging consumers to purchase whole heads of lettuce rather than pre-washed bags.
The lack of a confirmed source has fueled online speculation, with social media users sharing theories about grocery stores, restaurants, or food producers. “No recall has been issued for this outbreak,” she said, adding that “a lot of the viral content treats this as gross-out material, explosive diarrhea, played for shock value.”
Taco Bell’s Precautionary Measures
Taco Bell has voluntarily removed limited ingredients at select restaurants as a precautionary measure, though the company emphasized that public health officials have not confirmed a link to the outbreak. “Until the culprit is found, we really can’t put the blame on a certain farm or processing company,” said Dr. Nuwan Gunawardhana, an infectious disease expert at Columbia University Irving Medical Center, in an interview with CBS News.
Health officials stress that the outbreak is not limited to any single region, with cases reported in at least four states. The true number of sick people is likely higher than reported, the CDC noted, citing delays in testing and reporting. The agency also highlighted staffing reductions at the CDC, which have hindered surveillance efforts. “Our surveillance systems have been hindered to a large extent because of many cuts we’ve seen from the federal government,” said Dr. Omer Awan, a physician and senior public health contributor for Forbes.
Consumer Advice and Public Health Warnings
With no official recall, health experts advise consumers to follow general food safety precautions. “We basically have to revert to what you’d tell someone traveling to a developing country: Don’t eat fresh produce that isn’t cooked and can’t be peeled,” Gounder said. Michigan health officials also recommended avoiding bagged salad mixes, fresh cilantro, and other produce linked to previous outbreaks.
For more on this story, see Cyclosporiasis Outbreak Spreads Across Michigan, 174 Cases Confirmed.
Dr. Jonathan Pham, an infectious disease specialist with Loma Linda University Health, explained the parasite’s transmission: You don’t need to ingest much of it for it to cause an infection in the small intestine. The CDC and FDA have urged doctors to remain vigilant, as cyclosporiasis can be treated with antibiotics but often requires prolonged recovery. “Without treatment, symptoms can last anywhere from a few days to a month or longer,” the CDC noted.
California’s Relative Calm
While other states grapple with rising cases, California has reported fewer infections in 2026 compared to the same period in 2025. The CDPH confirmed 41 provisional cases from January to June 2026, compared to 80 in the same timeframe the previous year. “California is not among the states experiencing an increase in cyclosporiasis cases,” said Dr. Erica Pan, CDPH Director and State Public Health Officer. However, officials remain cautious, emphasizing the importance of washing produce and adhering to food safety guidelines.
Despite California’s lower case numbers, the outbreak has highlighted broader challenges in disease surveillance. “Now it’s become optional to report [cyclospora], so our surveillance systems have been hindered,” Awan said. This shift, following CDC cuts in 2025, has made it harder to trace outbreaks promptly. It takes a lot of contact tracing, Pham added, noting the difficulty in identifying the source when symptoms appear up to 10 days after exposure.
As the investigation continues, the lack of a confirmed source leaves consumers in a precarious position. “Anyone who is sick with cyclospora, what state are you in and have you narrowed down what you ate that may have caused it?” one social media user asked, reflecting the public’s frustration. With federal agencies working to pinpoint the outbreak’s origin, the focus remains on preventing further infections while navigating the uncertainties of an evolving crisis.
CBS News reported on consumer concerns and public health guidance, while the CDC provided updates on the multistate investigation. ABC7 Los Angeles highlighted California’s lower case numbers and public health warnings.
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