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Cyclospora Outbreak Spreads: 15 States Affected by Lettuce Parasite
6 Aug
Summary
- Cyclospora cases in 15 states are linked to iceberg lettuce.
- The outbreak has surpassed 2019's record, with over 25,000 cases reported.
- Taylor Farms' iceberg lettuce from central Mexico is the suspected source.
As of August 6, 2026, a significant Cyclospora outbreak has expanded to 15 U.S. states, with health officials identifying iceberg lettuce as the probable contaminated source. This outbreak has already surpassed the record set in 2019, with national case numbers exceeding 25,000.
Investigators have zeroed in on Taylor Farms' shredded iceberg lettuce, which was grown in central Mexico, as the potential origin. The company has initiated a recall of affected products. Earlier confusion regarding a potential false positive test result has been clarified, with evidence continuing to implicate this specific lettuce product.
The parasite, Cyclospora, commonly causes gastrointestinal illness and tends to see outbreaks during warmer months. The difficulty in tracing such outbreaks is exacerbated by a potentially long incubation period, challenges in laboratory analysis, and the extensive work required to interview affected individuals.
Public health resources are also strained, with staffing cuts at federal, state, and local levels potentially limiting containment efforts. Michigan has reported a particularly high number of cases, exceeding 12,000, including two reported deaths among individuals with underlying health conditions. The FDA is monitoring five separate Cyclospora outbreaks, with this 15-state event being the most substantial.
