Texas reports rise in cyclospora cases as foodborne illness spreads nationwide

A microscopic parasite is quietly spreading across North Texas this summer, and health officials are urging residents not to dismiss the warning signs.

State health data confirms that Texas has now recorded 48 cases of cyclospora meeting the federal outbreak case definition, all occurring since May 1, 2026, and none linked to foreign travel.

Five people have been hospitalized, though no deaths have been reported.

Denton County Public Health has confirmed two cases of cyclosporiasis so far this season, with investigators noting no evidence of a local transmission chain or a defined outbreak at this time.

That limited footprint, however, offers little comfort given how rapidly the illness has escalated elsewhere across the state.

Tarrant County has confirmed fewer than five cases, with officials indicating that no clear epidemiological link connects them.

Doctors warn the true number of infections statewide is almost certainly higher, since many people recover without ever seeking medical care or receiving a formal diagnosis.

Cyclosporiasis is caused by the Cyclospora cayetanensis parasite and spreads through contaminated food or water — most often fresh produce that has not been thoroughly washed.

Symptoms typically appear about a week after exposure and include relentless watery diarrhea, cramping, bloating, nausea, fatigue, and loss of appetite.

Immunocompromised individuals face a significantly higher risk of severe complications, a concern that has kept county epidemiologists on alert heading into peak summer season.

Nationally, the outbreak has reached at least 18 states, with confirmed case counts climbing well into the hundreds.

The source of the outbreak remains unidentified, making targeted prevention guidance difficult to issue.

Previous outbreaks of the cyclospora parasite have been traced to fresh cilantro, bagged salad mixes, raspberries, basil, snow peas, and green onions.

Health officials recommend scrubbing all produce thoroughly, washing hands before and after handling food, and sanitizing cutting boards and surfaces regularly.

Residents experiencing sudden or persistent diarrhea are encouraged to contact a healthcare provider promptly, as cyclosporiasis is treatable with antibiotics combined with rest and adequate hydration.