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Outbreak of Diarrhea-Causing Parasite Grows to More than 1,000 Cases
Health officials say contaminated produce is the leading theory as investigators interview 700 patients and trace a multistate outbreak.
- At least 18 states have reported cyclosporiasis cases as of Monday, with New York confirming more than 100 infections and New Jersey reporting between 1 and 10, according to the Centers for Disease Control and Prevention.
- The parasitic intestinal illness is caused by Cyclospora cayetanensis, which spreads through contaminated food or water rather than person-to-person transmission, according to the CDC.
- Symptoms include frequent, watery diarrhea described as "explosive," alongside abdominal cramps, fatigue, and nausea that can persist for weeks or months without treatment, according to the CDC.
- Case counts in Michigan reached 572 by July 4, but state officials note that complex food distribution networks—where produce is grown in one state, processed in another, then distributed nationally—complicate tracing the source.
- The CDC advises cooking raw foods to at least 158°F to kill the parasite, while also recommending thorough washing of fresh produce and scrubbing firm fruits and vegetables with a clean brush to reduce exposure risk.
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104 Articles
What we know about past outbreaks linked to cyclospora, a parasite that lead to ‘explosive diarrhea’
The parasite behind “explosive diarrhea” is on the rise, with cases reported in 17 states and produce like parsley, cilantro and salad mixes among the foods to watch.
·Baltimore, United States
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Marion County sees surge in 'explosive diarrhea' cases
Indianapolis and Marion County have seen an increase in confirmed cases of Cyclospora, also known as "explosive diarrhea," with 15 cases reported so far in 2026. Michigan has experienced the largest outbreak in state history, with 992 cases reported.
·Indianapolis, United States
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Total News Sources104
Leaning Left14Leaning Right6Center72Last UpdatedBias Distribution78% Center
Bias Distribution
- 78% of the sources are Center
78% Center
15%
C 78%
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