Ohio Department of Health Issues Cyclosporiasis Update

The Ohio Department of Health reported on August 5, 2026, that a growing outbreak of cyclosporiasis, a parasitic infection, has sickened thousands of people. The agency is currently monitoring the spread of the parasite, which is typically transmitted through contaminated food or water, to identify the source of the infection and prevent further cases.

According to reporting from 10tv, the state health department issued this update as part of an ongoing effort to track the parasitic outbreak. Cyclosporiasis is caused by the Cyclospora cayetanensis parasite, which can lead to prolonged gastrointestinal distress in infected individuals.

Cyclosporiasis symptoms and transmission

The Ohio Department of Health identifies the infection as a parasitic illness that primarily affects the digestive tract. Common symptoms associated with the infection include watery diarrhea, stomach pain, nausea, and loss of appetite. Health officials note that these symptoms can be intermittent, meaning they may disappear and then return over several weeks.

The parasite is typically ingested via contaminated fresh produce or water. Because the parasite is hardy and can survive in various environments, it often spreads through imported produce that has been contaminated in the field or during processing, according to state health guidelines.

Public health response and tracking

State health officials are working to identify the specific food product responsible for the current spike in cases. This process involves interviewing patients about their food history and conducting laboratory testing on samples. The Ohio Department of Health uses this data to coordinate with federal partners, such as the Centers for Disease Control and Prevention (CDC), to determine if the outbreak is localized to Ohio or part of a broader national trend.

The agency urges residents who experience persistent gastrointestinal symptoms to contact their healthcare provider. Proper diagnosis requires a stool sample, as the parasite is not detected by standard bacterial culture tests. Once diagnosed, the infection is typically treated with specific antiparasitic medications prescribed by a physician.

The Ohio Department of Health continues to update the public as new information regarding the source of the contamination becomes available. Residents are encouraged to follow standard food safety practices, including washing produce thoroughly, though officials acknowledge that washing may not always remove the parasite if it is deeply embedded in the produce.