Outbreak of Cyclosporiasis Reported Across the U.S.

Currently, over 11,500 cases of cyclosporiasis, a disease caused by a parasitic organism known for causing severe diarrhea, have been reported in many states across the U.S.

The U.S. Centers for Disease Control and Prevention (CDC) has confirmed 4,173 laboratory cases of this illness. However, officials are aware of more than 7,400 additional cases that haven’t yet been confirmed via lab testing, which suggests a significant increase in the overall count—in total, 11,537 individuals are estimated to be affected. It’s important to note that the CDC’s figures don’t include cases that are deemed “probable,” which may mean the actual number is even higher owing to variances in state and federal reporting.

From May 1 to July 20, 2026, 41 states have reported cases of this parasitic infection, with 308 hospitalizations. Michigan stands out as the state with the highest number of reported cases, while Ohio also ranks high.

The CDC has pointed out that the real number of those infected could be greater than reported, as many individuals recover without seeking formal testing.

While efforts are underway to pinpoint the source of this outbreak, Taylor Farms has opted to recall iceberg lettuce sourced from Mexico. This isn’t too surprising; many people suspect that fast food items, particularly from chains like Taco Bell, could be linked to the outbreak. Recently, some of these restaurants have taken certain items off their menus, including lettuce, cilantro, onions, pico de gallo, and guacamole.

In a press release dated July 19, Taylor Farms mentioned that the Food and Drug Administration (FDA) has apologized for mistakenly attributing the outbreak to their iceberg lettuce from Mexico, attributing it to a “false positive” in testing. The company advised consumers to steer clear of the product while investigations continue.

“To be clear, the FDA has not identified any confirmed product tests for Cyclospora,” Taylor Farms stated. The press release further elaborated, explaining:

Based on early information from health authorities, we’ve initiated a voluntary recall of iceberg lettuce from central Mexico as a precaution. The recall is specific to iceberg lettuce grown and processed in that region.

All other products from Taylor Farms are unaffected by this recall, including all our branded products available in stores.

Our thoughts are with those who have become ill as a result of this outbreak. We are dedicated to collaborating with public health officials as the investigation proceeds.

Furthermore, Taylor Farms announced they would not be sourcing iceberg lettuce from central Mexico for the remainder of the growing season.

According to reports, symptoms of cyclosporiasis typically emerge about a week post-infection, although this can vary. Common symptoms include watery diarrhea, weight loss, fatigue, and general discomfort such as cramps and bloating.