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Cyclosporiasis in Florida: 94 cases of 'explosive' diarrhea parasite confirmed, 14 in Tampa Bay area
Health officials said 141 people have been hospitalized and the source remains unknown as investigators track a parasite spread through contaminated food or water.
As of July 14, 2026, the United States Centers for Disease Control and Prevention reported 1,645 confirmed cyclosporiasis cases across 35 states, with officials analyzing more than 5,100 additional potential infections.
Caused by the cyclospora parasite, cyclosporiasis is a gastrointestinal disease often linked to contaminated raw produce that "usually causes watery diarrhea with frequent and sometimes explosive bowel movements," according to the CDC.
The outbreak has caused 141 hospitalizations, though no deaths have been reported, and clinicians use trimethoprim-sulfamethoxazole, sold as "Bactrim, Septra or Cotrim," for treatment.
As of July 16, 2026, the source of the outbreak remains unidentified, and Dr. Peter Chin-Hong of the University of California, San Francisco, stated that personnel cuts to surveillance systems created significant delays in tracing origins.
Although health officials recommend thorough washing of produce, experts warn this may not eliminate the parasite, and patients with persistent symptoms should seek testing as the illness can last over a month if left untreated.
A dangerous intestinal parasite is currently spreading in the country of the World Cup, which can trigger explosive diarrhea. In Michigan alone, the number of cases exploded to 30 times the normal value.