San Francisco Reports 10 Cases of Cyclosporiasis in 2026
San Francisco health officials have reported 10 cases of cyclosporiasis in 2026. One case is linked to domestic travel outside of California, and the others are associated with international travel.

San Francisco Oakland San Jose, CA, August 21, 2026 —
San Francisco health officials have confirmed 10 cases of cyclosporiasis within the city during 2026, according to recent reports.
Of the reported cases, one individual had a history of domestic travel outside of California. The remaining nine cases are associated with international travel, though specific destinations were not provided.
Cyclosporiasis is an intestinal illness caused by the microscopic parasite Cyclospora cayetanensis. It is typically contracted by consuming food or water contaminated with the parasite’s feces. Common symptoms include diarrhea, loss of appetite, weight loss, stomach cramps, bloating, gas, nausea, and fatigue. Some individuals may also experience vomiting, fever, and body aches. The illness can sometimes mimic other gastrointestinal issues, making diagnosis important.
Health officials emphasize that cyclosporiasis is treatable with antibiotics. Prompt medical attention is advised for individuals experiencing persistent gastrointestinal symptoms, especially after traveling.
Further details regarding the specific travel histories for the international cases and the precise timing of the domestic travel were not immediately available.
Story summarized from the original created by Gloria Rodríguez on abc7news.com, see more information here.
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