US declares largest cyclosporiasis outbreak over after contaminated lettuce sickens thousands
Quick Look
- US health authorities declared the nation's largest recorded cyclosporiasis outbreak over on Friday, after contaminated iceberg lettuce from central Mexico sickened 12,883 people across 21 states, leading to 570 hospitalizations and two deaths.
- The outbreak, linked to Taylor Farms-sourced lettuce, triggered one of the largest food recalls in recent years and renewed scrutiny of food-safety controls for imported produce, while rattling consumer confidence and hurting foot traffic at restaurants like Taco Bell, Sweetgreen, and Chipotle.
AI-generated summary
Why It Matters
The outbreak was linked to iceberg lettuce sourced from central Mexico by Taylor Farms, prompting one of the largest food recalls in recent years and renewing scrutiny of food-safety controls for imported produce.
US health authorities on Friday declared the nation’s largest recorded cyclosporiasis outbreak over, after contaminated iceberg lettuce sickened thousands, though the FDA said it was still probing how the parasite entered the food supply.
The outbreak, which federal investigators linked to lettuce from central Mexico sourced by Taylor Farms, prompted one of the largest food recalls in recent years and renewed scrutiny of food-safety controls for imported produce.
It also rattled consumer confidence, with some shoppers avoiding raw fruits and vegetables as well as dining out, hurting foot traffic at restaurants such as Taco Bell, Sweetgreen and Chipotle.
According to data from the Centres for Disease Control and Prevention, 12,883 people across 21 states fell ill after consuming contaminated lettuce.
The outbreak resulted in 570 hospitalisations and two deaths, and accounted for more than half of the 19,595 laboratory-confirmed US cyclosporiasis cases reported since May 1.
At the peak of the outbreak, before the recall, more than 1,000 infections were reported in a single day. In August, the CDC said, infections had fallen to fewer than two per day on average.
What to Watch
AI outlook — possibilities, not facts
FDA will complete its investigation into how the parasite entered the food supply
Likely · Within weeks
Open Questions
- How did the parasite enter the food supply?
- What specific food-safety failures allowed contaminated lettuce to reach consumers?
- Will there be regulatory changes to imported produce inspection protocols?





