Texas — Texas health officials have now reported 410 cases of cyclosporiasis in 2026, with 60 people hospitalized as the state continues tracking illnesses caused by the microscopic Cyclospora parasite.
The latest figures provided by the Texas Department of State Health Services represent a significant increase from earlier this month. On Aug. 4, state officials had reported 198 cases, meaning the reported total has more than doubled.
No deaths have been reported in Texas.
What Is Cyclospora?
Cyclospora is a microscopic parasite that causes an intestinal illness known as cyclosporiasis. People can become infected by consuming food or water contaminated with the parasite.
The most common symptom is prolonged watery diarrhea, which can persist for weeks and may appear to improve before returning.
Other symptoms can include:
• Loss of appetite
• Weight loss
• Stomach cramps
• Bloating and increased gas
• Nausea or vomiting
• Fatigue
• Low-grade fever
Symptoms generally begin between two and 14 days after exposure.
How Does It Spread?
Cyclospora does not typically spread directly from one person to another.
Previous U.S. outbreaks have been associated with contaminated fresh produce, including cilantro, salad mixes, raspberries and basil.
However, health officials have not attributed all 410 Texas cases to a single food or common source, and multiple clusters have been investigated during 2026.
Texas DSHS recommends thoroughly washing fresh fruits and vegetables before eating them, while cautioning that washing may not completely eliminate Cyclospora from contaminated produce.
Cases Rising Across the U.S.
Texas is not alone in seeing increased activity. Federal health officials have been tracking elevated numbers of domestically acquired cyclosporiasis cases across the country this year.
For comparison, Texas recorded 414 cases during all of 2024, according to finalized state data. The 410 cases reported so far in 2026 are preliminary and could change as investigations and reporting continue.
Anyone experiencing persistent watery diarrhea or other concerning symptoms is encouraged to contact a healthcare provider. DSHS notes that healthcare providers may need to specifically request testing for Cyclospora because it may not be included in routine stool testing.