The Centers for Disease Control and Prevention (CDC) reports investigating cases of Cyclosporiasis, a parasitic disease, in 17 states of the country.
CDC received reports of 145 cases of cyclosporiasis acquired in the United States of people who became sick from May 1, 2026, through June 16, 2026. These people became sick after eating food in the United States and did not report any travel during the 14 days before they got sick.
20 people required hospitalization for their illness and no deaths have been reported.
Of the 17 states reporting cases, New York, Texas and Illinois have reported the most cases.
Cyclosporiasis is a nationally notifiable disease and is reportable in 47 states, the District of Columbia, and New York City.
CDC reminds us the true number of people sick with cyclosporiasis was likely higher than the number reported. This is because some people recover without medical care and are not tested for Cyclospora.
In the United States, the majority of cases are reported during the spring and summer months. Outbreaks have been identified nearly every year since the mid-1990s.
After an average incubation period of one week, symptomatic infections typically manifest as watery diarrhea of varying severity. Other manifestations include complications of dysentery, further abdominal symptoms, and sometimes non-specific systemic symptoms (e.g. headache, low-grade fever). Untreated infections typically last for 10–12 weeks and may follow a relapsing course.