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Cyclospora Outbreak in the US: Nearly 7,000 Cases in 34 States, a Historic Record
Herz — World Desk · · 30s summary · 2 min read
The essentials
The United States is experiencing its largest Cyclospora cayetanensis outbreak—an intestinal parasite—ever recorded in the country, according to Nature magazine. Nearly 7,000 cases have been confirmed in 34 states, with approximately 200 people hospitalized. No deaths have been reported to date. Health officials have traced the contamination to pre-cut iceberg lettuce supplied by a Mexican producer and served at Taco Bell restaurants. Experts are raising alarms about the risks posed by weakening US health authorities.
- Nearly 7,000 Cyclospora cases confirmed across 34 US states.
- Largest Cyclospora outbreak in US history, according to Nature magazine.
- Contamination linked to Mexican-supplied iceberg lettuce at Taco Bell restaurants.
- Approximately 200 hospitalizations; no deaths reported so far.
- Experts warn of increased outbreak risks from weakened US health surveillance.
What We Know
The United States is currently reporting nearly 7,000 infections from the intestinal parasite Cyclospora cayetanensis across 34 states. According to Nature magazine, as reported in an analysis published by Zeit.de on July 18, 2026, this represents the largest Cyclospora outbreak ever recorded in the US.
Approximately 200 people have been hospitalized. No deaths have been reported to date.
The source of contamination has been identified: pre-cut iceberg lettuce supplied by a Mexican producer and used in Taco Bell restaurants—an American fast-food chain specializing in Tex-Mex cuisine and a division of Yum! Brands.
~7,000
Cases confirmed across 34 US states
~200
Hospitalizations
0
Deaths reported to date
Cyclospora: Origins and Symptoms
Cyclospora cayetanensis is a parasitic protozoan identified in 1977, responsible for an intestinal infection called cyclosporiasis. The first documented outbreak was described in 1990 at a hospital in Chicago.
Symptoms of cyclosporiasis include extreme fatigue, watery diarrhea, and severe abdominal cramps. Antibiotic treatment is available.
Cases confirmed7000
Hospitalizations200
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