HEALTH

United States investigates multistate cyclosporiasis outbreak

PUBLISHED Jul 11, 2026, 6:49 AM ET

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United States health authorities are investigating a rapidly expanding multistate outbreak of cyclosporiasis, a severe gastrointestinal illness caused by the microscopic parasite Cyclospora cayetanensis. The U.S. Centers for Disease Control and Prevention (CDC), working with state and local health departments, has confirmed at least 2,844 infections across 32 states as of Saturday, July 11, 2026. Michigan is the hardest-hit state, reporting 1,251 confirmed cases, while clinicians in northern Ohio are tracking a significant cluster of sudden gastrointestinal illnesses. Health officials in Princeton, New Jersey, and other municipal areas have issued urgent alerts to residents and medical providers to increase awareness and encourage testing. United States epidemiologists report that people typically become infected by consuming food or water contaminated with the parasite, which is often associated with fresh imported produce such as berries, basil, cilantro and leafy greens. The infection targets the small intestine and can cause explosive, watery diarrhea, severe stomach cramps, bloating, increased gas, nausea, fatigue, loss of appetite, weight loss and low-grade fever. Symptoms can persist for weeks or even months if untreated and may relapse over time. The CDC has warned that many infected individuals do not seek medical care or are not specifically tested, so the confirmed case count likely underestimates the true burden of illness in this outbreak.

By Sarah Whitman | JQJO News

Timeline of Events

Previous years Cyclospora linked to produce
Early 2026 Initial cyclosporiasis cases identified
June 2026 Multistate case numbers begin rising
Early July 2026 Michigan reports surging infections
Early July 2026 Northern Ohio hotspot recognized
Early July 2026 Princeton officials issue health alerts
July 11, 2026 CDC reports 2,844 confirmed infections
July 2026 Officials warn true cases undercounted

News Intelligence

Your health is at stake. This parasite targets the small intestine, causing severe stomach issues and fatigue. It's often linked to fresh imported produce. Be cautious about what you eat and drink.