🔥 Trending Parasite Outbreak: Understanding the Symptoms and Spread of Cyclosporiasis

The parasite causing "explosive diarrhea" is called Cyclospora cayetanensis, and the infection it causes is known as cyclosporiasis ³⁶. The U.S. Centers for Disease Control and Prevention (CDC) has raised concerns about its increased spread in the United States ¹⁴.

What is Cyclospora?

Cyclospora cayetanensis is a microscopic parasite that infects the small intestine ²³. It is known to cause frequent and often watery, "explosive" diarrhea, along with other gastrointestinal symptoms ³⁴. Cyclosporiasis is considered a nationally notifiable disease, meaning healthcare providers are legally required to report cases to public health authorities ¹⁰.

Where is it Spreading?

As of July 2026, cases of cyclosporiasis are on the rise in the United States ⁴⁵. The infection has sickened dozens of people in Michigan and has been observed in clusters across the country ⁵. In some reports, cases of the diarrhea-causing parasite have topped 1,000 ⁸. While specific states with the highest numbers are being monitored, the overall trend indicates a widespread increase ⁸.

Summer is considered peak season for this parasite, often coinciding with activities like beach trips and barbecues, which can unfortunately facilitate its spread ⁶⁷¹⁰.

Symptoms of Cyclosporiasis

Beyond "explosive" watery diarrhea, symptoms of cyclosporiasis can include ³⁹:

• Frequent and severe watery diarrhea
• Nausea
• Fatigue
• Stomach cramps
• Loss of appetite
• Weight loss
• Bloating
• Gas

These symptoms can be severe and may last for several weeks if not treated ².

How is it Transmitted?

Cyclospora is typically transmitted through the consumption of contaminated food or water ¹. Fresh produce, particularly imported fruits and vegetables, has often been implicated in outbreaks ¹. The parasite is not usually spread directly from person to person ¹.

Protecting Yourself

To reduce the risk of cyclosporiasis, the CDC recommends several preventive measures ¹:

• Thoroughly wash fruits and vegetables before eating them.
• Avoid consuming untreated water.
• Practice good hand hygiene, especially after using the restroom and before handling food.
• Be cautious when traveling to areas where cyclosporiasis is common.

If you experience symptoms consistent with cyclosporiasis, especially severe or prolonged diarrhea, it is important to seek medical attention for diagnosis and treatment ¹.