🔥 Trending Cyclospora Outbreak: What You Need to Know About the Latest Stomach Illness Case

The Cyclospora parasite outbreak refers to a series of illnesses caused by the Cyclospora cayetanensis parasite, which has been sickening individuals across multiple U.S. states. These outbreaks are a recurring public health concern, particularly during the summer months ⁷.

Current Situation (as of July 2026)

As of July 2026, health officials are actively investigating several outbreaks of cyclosporiasis across the United States:

• Multistate Outbreak: At least 145 people across 17 states have been sickened since May 1, 2026, with 20 hospitalizations reported. The exact source of contamination for this outbreak has not yet been identified ⁶⁷.
• Michigan Surge: Michigan is experiencing a separate, significant surge in cases, with over 150 people affected ³⁸.
• Overall Impact: Approximately 2,000 people have been sickened by Cyclospora in ongoing outbreaks, leading to symptoms like "explosive" diarrhea that can last a month or more ².

Health officials, including the CDC, are monitoring cases year-round to detect and investigate outbreaks, especially those linked to common food sources ¹. The current investigations are exploring a potential domestically sourced contaminated food product ³.

What is Cyclospora?

Cyclospora cayetanensis is a microscopic parasite that causes an intestinal infection known as cyclosporiasis. It is typically spread when people ingest food or water contaminated with feces containing the parasite ⁴.

Symptoms of Cyclosporiasis

Symptoms usually appear about a week after consuming contaminated food or water, but can range from 2 to 14 days. Common symptoms include ⁴⁵:

• Explosive and watery diarrhea: This is a hallmark symptom and can be severe ²⁸.
• Loss of appetite and weight loss
• Stomach cramps or pain
• Nausea
• Fatigue
• Bloating
• Increased gas
• Vomiting (less common)
• Low-grade fever (less common)

Without treatment, the illness can last for a month or more, with symptoms potentially recurring ²⁴.

How is Cyclospora Spread?

Cyclospora is primarily transmitted through the consumption of fresh produce that has been contaminated with feces containing the parasite. This contamination can occur at various points, including during cultivation, harvesting, packaging, or even at the point of sale. Common culprits in past outbreaks have included fresh fruits and vegetables such as ⁵:

• Berries (raspberries, blueberries)
• Leafy greens (lettuce, spinach)
• Herbs (basil, cilantro)
• Snow peas

Unlike some other foodborne pathogens, Cyclospora is not spread directly from person to person because the parasite needs time (days to weeks) after being passed in stool to become infectious ⁴.

Prevention and Treatment

Prevention

Preventing cyclosporiasis largely involves careful handling and washing of produce, although washing may not always eliminate all parasites. Key preventive measures include ⁴⁵:

• Thoroughly wash fruits and vegetables: Rinse produce under running water. While washing helps, it may not remove all parasites, especially from produce with textured surfaces.
• Practice good hygiene: Wash hands thoroughly with soap and water before and after handling food.
• Avoid cross-contamination: Keep raw produce separate from other foods.
• Cook produce when possible: Cooking kills the parasite.
• Be aware of food recalls: Pay attention to public health announcements regarding contaminated produce.

Treatment

If you suspect you have cyclosporiasis, it's important to consult a healthcare provider. The infection is typically treated with specific antibiotics, most commonly trimethoprim-sulfamethoxazole (TMP-SMX), also known as Bactrim, Septra, or Cotrim ⁴. There is no over-the-counter medication that effectively treats cyclosporiasis.