Silent Parasite Spreads

Across North America, thousands are falling ill to a parasite called cyclospora, and the outbreak is growing faster than officials can track.

Cyclospora is a microscopic parasite that lives in contaminated food and water, most often raw produce like lettuce, cilantro, and berries. When you eat it, it attacks your intestines. The result: watery or explosive diarrhea, nausea, vomiting, exhaustion, and sometimes weeks of illness if untreated. 

This is not a distant threat. Since May 2026, labs have confirmed over 1,600 cases across 34 U.S. states, with more than 5,100 additional reports pending. Michigan alone has recorded over 3,300 cases and 88 hospitalizations. No deaths yet, but the CDC warns cases will keep rising through August.

If you eat fresh produce, dine out, or buy groceries from big chains, your risk is real, now. The parasite is spreading through the food supply, and officials still haven’t identified the exact source.

Cases are climbing weekly. The lag between infection and reporting is about six weeks, meaning today’s numbers reflect exposures from early June. More infections are already in the pipeline.

Most people recover with antibiotics, but the illness can last weeks. For children, elders, and those with weakened immune systems, it can mean hospitalization.

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Families, food-service workers, and communities relying on quick, affordable meals. Afro-Caribbean and Indo-Caribbean households (where fresh produce and communal meals are cultural staples) face heightened exposure if contaminated ingredients enter the food chain.

In July 2025, the CDC removed cyclospora from its FoodNet surveillance system, citing budget constraints. The Trump administration slashed roughly 25% of CDC staff, dissolving the Division of Parasitic Diseases and Malaria.

“That’s like removing smoke detectors because fires are expensive to track,” says one epidemiologist.

What can you do?

• Wash all produce thoroughly. Peel when possible.

• Avoid raw lettuce or cilantro from uncertain sources.

• If you have persistent diarrhea, ask your doctor to test for cyclospora.

• Demand transparency: call your local health department. Ask what they’re tracking.

The FDA is tracing produce, but no recall has been issued. The CDC has alerted doctors but lacks the workforce to lead a robust response.

Cyclospora is a mirror. It shows us what we value: speed over safety, cuts over care. The question is whether are ready for the next outbreak.