🔥 Trending Explosive Diarrhea Outbreaks: What You Need to Know

Explosive diarrhea is a term used to describe a sudden, forceful, and often voluminous expulsion of watery stool. While not a medical term itself, it effectively conveys the intensity and urgency of the bowel movements experienced by individuals ¹. The National Institute of Diabetes and Digestive and Kidney Diseases defines diarrhea as passing "loose, watery stools three or more times a day, or more often than what is normal for you" ¹. Explosive diarrhea is essentially a more severe manifestation of this, often associated with specific infections.

Causes of Explosive Diarrhea

Explosive diarrhea can be caused by various factors, but it is frequently linked to infections that irritate the small intestine. One notable cause highlighted in recent outbreaks is the parasite Cyclospora cayetanensis ².

Cyclosporiasis and Recent Outbreaks

Cyclosporiasis is an intestinal illness caused by the microscopic parasite Cyclospora cayetanensis. This parasite infects the small intestine and typically leads to watery diarrhea, often characterized by frequent and sometimes explosive bowel movements ². If left untreated, the illness can persist for an extended period, ranging from a few days to over a month ².

Symptoms of Cyclosporiasis

Beyond explosive, watery diarrhea, other common symptoms of cyclosporiasis include ⁵:

• Nausea
• Abdominal cramps
• Fatigue
• Loss of appetite
• Weight loss
• Bloating
• Increased gas
• Vomiting
• Low-grade fever

The severity of these symptoms can be more pronounced in vulnerable populations, such as young children, older adults, and individuals who are immunosuppressed or immunocompromised, as they may be more susceptible to dehydration ⁵.

Recent Outbreak Information (as of July 2026)

In July 2026, health officials reported a surge in cyclosporiasis cases across the United States, causing what has been described as an "explosive" diarrhea outbreak ⁷.

• Multistate Outbreak: A multistate outbreak of the Cyclospora parasite, causing "explosive diarrhea," has been linked to shredded lettuce from Taco Bell ³.
• Ongoing Challenges: Public health experts have faced challenges in tracking the precise origin of the outbreak and understanding its full spread ⁴.
• Surveillance: The CDC, in collaboration with state and federal health and regulatory officials, continuously monitors cyclosporiasis cases throughout the year to identify and investigate outbreaks linked to common food sources in the United States ⁹.

How Cyclospora Spreads

Cyclospora is typically spread when people ingest food or water contaminated with the parasite. It is not usually spread directly from person to person ². Outbreaks are often associated with fresh produce, such as various fruits and vegetables ³.

Prevention and Treatment

To prevent cyclosporiasis, it's crucial to practice good hygiene, especially when handling and preparing food. Thoroughly washing fruits and vegetables, especially those eaten raw, is recommended. If you suspect you have cyclosporiasis, it's important to seek medical attention. The illness can be treated with specific antibiotics ².