Federal health officials are tracking two major Cyclospora outbreaks that have sickened nearly 7,000 people across the United States, a crisis unfolding even as a federal tracking freeze complicates the public health response.
The Centers for Disease Control and Prevention and the Food and Drug Administration are scrambling to contain the spread of the parasite. The first outbreak is directly linked to recalled iceberg lettuce from Taylor Farms, while the second, much larger outbreak remains a mystery with no identified source.
Taylor Farms Lettuce Sparks Multi-State Outbreak
The first confirmed outbreak involves 1,947 patients spread across nine states: Illinois, Indiana, Kansas, Kentucky, Michigan, Ohio, Oklahoma, Pennsylvania, and West Virginia. According to the CDC, the contaminated products trace back to Taylor Farms iceberg lettuce sourced from its central Mexico growing operations.
Taco Bell, identified as a primary customer tied to the illnesses, has stopped using the lettuce. Taylor Farms has initiated a recall of the affected products. The FDA reports 98 hospitalizations and zero deaths linked to this specific outbreak, with the most recent illness onset recorded on July 20.
The recalled lettuce was distributed widely, reaching restaurants and retailers including Walmart across 27 states, spanning from Florida and Georgia up to New Hampshire and west to Wisconsin. The FDA warns the products may have reached additional states. Despite the widespread distribution, Taco Bell remains the only U.S. customer to publicly issue a statement regarding its sale of Taylor Farms lettuce.
Second Cyclospora Outbreak Baffles Investigators
While the lettuce outbreak is severe, a second Cyclospora outbreak is proving far more widespread and elusive. The CDC has confirmed 4,173 domestic cases of cyclosporiasis, with an additional 7,400 suspected cases awaiting laboratory confirmation and further analysis.
Michigan and Ohio are bearing the brunt of this second wave. Michigan alone reports 8,176 cases, with 160 patients requiring hospitalization. State officials expect these numbers to rise as they continue gathering complete patient information. Ohio has documented more than 2,000 illnesses. It remains unclear how many of these Midwest cases are tied to the Taylor Farms lettuce or if an entirely separate food source is to blame. Investigators have not yet identified a specific source for this second outbreak.
Federal Tracking Freeze and Data Discrepancies
The sheer scale of the outbreak is colliding with a significant data gap. The CDC stopped counting Cyclospora infections on July 1, 2025, following a directive from the Trump Administration. This administrative freeze has created glaring discrepancies between the numbers reported by state health departments and the federal tally, severely limiting the CDC’s ability to provide a unified national picture.
The FDA also quietly shifted the official outbreak window. Both agencies previously stated the outbreak ran from May 13 to July 13. They have now revised that timeline to June 22 through July 20. Roughly six weeks of illnesses were suddenly removed from the outbreak definition. The FDA attributes some of the rise in cases to the inclusion of four new states and notes that it can take up to six weeks to confirm if a sick person belongs to this specific outbreak.
Testing Retraction and International Reach
The investigation has not been without missteps. On July 18, the FDA announced that a sample of Taylor Farms iceberg lettuce tested positive for Cyclospora. The very next day, the agency retracted the statement, citing a false positive. Despite the retracted test, the FDA maintains that epidemiological data and traceback information continue to converge on shredded iceberg lettuce from central Mexican growers.
The recall’s footprint has also expanded beyond U.S. borders. The FDA reports that Taylor Farms customer records show recalled lettuce was sold to consumers in Mexico. This revelation came just one day after Mexico’s health ministry announced that its own samples from the processing plant tested negative for the parasite.
Understanding the Cyclospora Threat
Cyclospora is a microscopic, single-celled protozoan parasite. Unlike E. coli or salmonella, which can spread through animal waste, Cyclospora is transmitted exclusively through human fecal matter, typically contaminating food or water supplies. Ingesting the parasite leads to cyclosporiasis, an intestinal infection marked by severe abdominal pain, watery diarrhea, nausea, vomiting, body aches, and extreme fatigue.
Symptoms usually manifest between two and 14 days after exposure. While the illness can be severe enough to require hospitalization, fatalities are rare. Individuals experiencing symptoms who suspect exposure should seek immediate medical attention. Diagnosis requires specific laboratory tests, and treatment typically involves targeted antibiotics to fight the parasite.
What Happens Next
As state health departments in Michigan, Ohio, and other affected regions continue to process backlogs of unconfirmed cases, the total patient count will likely climb higher in the coming weeks. The six-week lag in laboratory confirmation means the true scope of the Cyclospora outbreak may not be fully understood until late August.
Consumers who purchased iceberg lettuce from retailers like Walmart or consumed it at restaurants such as Taco Bell in the affected distribution states should check their homes for recalled products. The ongoing federal freeze on Cyclospora tracking by the CDC will continue to hinder a coordinated national response, leaving state health officials to manage the brunt of the epidemiological investigation. Expect further regulatory scrutiny on Taylor Farms’ central Mexico operations as the FDA continues its traceback efforts and works to pinpoint the source of the second, unidentified outbreak.
— Aisha Mensah, health desk, AXO News