Hawaiʻi Department of Health Confirms Fourth Cyclosporiasis Case of 2026

The Hawaiʻi Department of Health has confirmed a fourth case of cyclosporiasis in 2026, involving a military member who traveled internationally before falling ill. While the exact location of infection acquisition is currently unknown, the department states there is no evidence this case alters the low-risk assessment for the public in Hawaiʻi. Cyclosporiasis is an intestinal illness caused by the parasite Cyclospora cayetanensis, treatable with prescription antibiotics.