Federal Officials Investigate Multistate Cyclosporiasis Outbreak, Lettuce Source Under Scrutiny
Federal officials are investigating a multistate outbreak of cyclosporiasis, potentially linked to lettuce. A test result from a Taylor Farms lettuce sample, initially reported as positive for cyclospora, was later determined to be a false positive, adding to confusion about…
Seattle Tacoma, WA, July 20, 2026 —
Federal health officials are actively investigating a multistate outbreak of cyclosporiasis, a foodborne illness caused by the parasite Cyclospora cayetanensis. The investigation is examining a potential link to lettuce as a contaminated source.
The probe has encountered complexities, notably a recent development involving a lettuce sample from Taylor Farms. Initially, a test result indicated the presence of Cyclospora in the sample. However, this finding was subsequently revised and identified as a false positive. This change in results has added a layer of confusion to the ongoing efforts to pinpoint the exact origin of the outbreak.
Cyclosporiasis is typically transmitted through contaminated food or water. Symptoms in humans can include diarrhea, loss of appetite, weight loss, cramping, bloating, gas, nausea, fatigue, and sometimes vomiting and fever. The illness is treated with a course of antibiotics.
The Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA) are leading the investigation. As of the latest reports, the specific states affected by the outbreak and the total number of cases have not been fully detailed. Authorities are working to gather more information to identify the common source and prevent further illnesses.
The involvement of a specific product, like lettuce, underscores the challenges in tracing the source of foodborne illnesses, especially when preliminary test results are subject to revision. Officials emphasize the importance of continued investigation to ensure public health and food safety.
Story summarized from the original created by Cascade PBS Staff on www.cascadepbs.org, see more information here.
