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‘Explosive diarrhea’ parasite cases rise in New York, with 65 new cases

New York reported 65 additional confirmed cases of cyclosporiasis, known for causing frequent explosive diarrhea, in the latest weekly update from the state Department of Health.

Explosive diarrhea
The CDC reports 13,895 lab-confirmed cases of cyclosporiasis in the U.S. as of Aug. 11, 2026. (Provided by Centers for Disease Control and Prevention via Reuters Connect)

Reporting by Madison Scott, New York Connect Team / Rochester Democrat and Chronicle

New York reported 65 additional confirmed cases of cyclosporiasis, known for causing frequent explosive diarrhea, in the latest weekly update from the state Department of Health, bringing the total number of cases reported this year to 932 through Aug. 10.

The New York State Department of Health is posting weekly updates on confirmed cyclosporiasis cases every Wednesday through the end of August.

Explosive diarrhea
The CDC reports 13,895 lab-confirmed cases of cyclosporiasis in the U.S. as of Aug. 11, 2026. (Provided by Centers for Disease Control and Prevention via Reuters Connect)

New York reports 65 more cases

As of Aug. 12, the state health department reported 898 cyclosporiasis cases from May 1 through Aug. 10 and 932 cases from Jan. 1 through Aug. 10.

The previous update, released Aug. 5, reported 833 cases from May 1 through Aug. 3 and 867 cases from Jan. 1 through Aug. 3.

The latest figures represent an increase of 65 cases over the past week.

The next update is scheduled for Wednesday, Aug. 19.

Cyclosporiasis cases reported nationwide

The Centers for Disease Control and Prevention reported 13,895 laboratory-confirmed cases of cyclosporiasis acquired in the United States as of Aug. 11, along with 10,455 additional cases that may require further investigation and analysis.

A week earlier, the CDC reported 10,468 laboratory-confirmed cases nationwide.

Michigan continues to report the highest number of cases among affected states, with the Michigan Department of Health and Human Services reporting 12,485 confirmed cases as of Aug. 6.

Federal health officials are investigating multiple Cyclospora outbreaks, including a multistate outbreak linked to recalled iceberg lettuce sourced from central Mexico and distributed by Taylor Farms. New York is not among the states identified in that outbreak.

What is cyclosporiasis?

Cyclosporiasis is an intestinal illness caused by the microscopic parasite Cyclospora cayetanensis.

People become infected by consuming food or water contaminated with the parasite. In the United States, outbreaks have often been linked to fresh produce, including cilantro, basil, salad mixes, snow peas and raspberries.

Unlike many gastrointestinal illnesses, cyclosporiasis is not usually spread directly from person to person.

Symptoms can include:

  • Frequent ‘explosive diarrhea’
  • Stomach cramps
  • Nausea and vomiting
  • Loss of appetite
  • Weight loss
  • Fatigue
  • Bloating
  • Muscle aches

Symptoms typically begin about a week after exposure but can take up to two weeks to develop. Without treatment, the illness can last for weeks or longer.

How to reduce your risk

Health officials recommend the following steps when handling fresh produce:

  • Wash your hands before and after handling fruits and vegetables.
  • Clean and sanitize cutting boards, knives and food preparation surfaces.
  • Scrub firm produce, such as melons and cucumbers, with a clean produce brush.
  • Remove bruised or damaged areas of produce.
  • Rinse fresh produce thoroughly under running water before eating.
  • Refrigerate cut, peeled or cooked fruits and vegetables promptly.
  • Cook food when possible, as heat can kill the parasite.

When to seek medical care

Cyclosporiasis is usually not life-threatening, but severe diarrhea can cause dehydration, particularly among older adults, young children and people with weakened immune systems.

Anyone experiencing persistent diarrhea, signs of dehydration, severe abdominal pain or symptoms lasting more than several days should contact a health care provider.

—Madison Scott is a New York Connect reporter, covering entertainment, breaking and consumer news, and trending topics with a focus on stories that matter to readers across New York State. She also has an interest in how the system helps or doesn’t help families with missing loved ones. She can be reached at MDScott@USATodayco.com.

This article originally appeared on Rochester Democrat and Chronicle.

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