Mystery parasite leaves Americans battling ‘explosive diarrhea’ as CDC investigates

The CDC confirmed 145 cases of cyclosporiasis across 17 states, with 20 patients hospitalized. The parasitic infection causes severe diarrhea and gastrointestinal illness. Cyclosporiasis outbreaks occur seasonally in the United States, typically peaking in summer and fall months. The CDC did not identify a common food or water source linking the cases at the time of reporting.

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