The Centers for Disease Control and Prevention has confirmed more than 800 cases of cyclosporiasis, a severe gastrointestinal illness marked by prolonged watery diarrhea and what the agency describes as "frequent and sometimes explosive bowel movements." The outbreak has spread across at least 26 states, and the CDC is investigating over 1,500 additional suspected cases that are likely to push the total higher.
Cyclosporiasis is caused by the cyclospora parasite, which enters the body through contaminated food—typically fresh produce. The CDC notes that the illness can last for weeks if untreated, and symptoms often include nausea, cramping, and fatigue. Those infected may require antibiotics to clear the infection.
The exact source of this outbreak remains unknown, but historically, cyclospora has been traced to fresh fruits and vegetables. The parasite is typically spread when irrigation water contaminated with human feces comes into contact with produce. Past cyclospora outbreaks have been linked to salad greens, cilantro, and raspberries, among other items.
Health officials are urging consumers to wash all produce thoroughly, though the CDC notes that the parasite can be difficult to remove with water alone. Cooking kills the parasite, but many fruits and vegetables are consumed raw, leaving consumers vulnerable.
The CDC is working with state and local health departments to identify the specific food items involved. In the meantime, the agency advises anyone experiencing symptoms—especially prolonged diarrhea—to seek medical attention and request testing for cyclospora, as it is not detected by routine stool tests.
This outbreak is not the first major cyclospora event in recent years. In 2023, the CDC investigated a cyclospora outbreak in Michigan that was tied to salad greens, and cases have been rising seasonally, typically peaking in late spring and summer.
Public health experts emphasize that while the risk of infection is low, the consequences can be severe. The CDC continues to monitor the situation and plans to update its guidance as more information becomes available.
For now, consumers are advised to stay informed about recalls and to consider cooking produce that can be heated. The agency also recommends that anyone with a compromised immune system or who is pregnant exercise extra caution with fresh produce.
