A summer stomach parasite is causing a rise in infections across Texas, according to health officials.
The Centers for Disease Control and Prevention (CDC) reports that between 11 and 30 people in Texas have contracted cyclosporiasis this year, though the actual number may be higher due to unreported cases.
Local and State Response
In Denton County, two cases have been confirmed. Local health officials had already prepared medical networks for the expected summer increase.
Denton County Public Health stated that epidemiologists presented on cyclosporiasis at an April meeting in anticipation of the seasonal surge.
The Texas Department of State Health Services issued a statewide health advisory in May to raise clinical awareness.
Officials noted that most infections occur between May and August and urged medical professionals to watch for severe watery diarrhea and abdominal pain, especially in immunocompromised patients.
National Picture
Nationally, the CDC recorded 145 cases across 17 states as of June 16, 2026, resulting in 20 hospitalizations and no deaths.
While previous outbreaks have been linked to fresh produce like bagged salad mixes, cilantro, and raspberries, there is currently no evidence of a single source for all cases.
In Michigan, the number of reported cases has climbed sharply to 572. New York state reported between 31 and 80 cases from May 1 to June 16, 2026.
Federal investigators noted that 45 of the nationwide patients contracted the illness during international travel.
