The Centers for Disease Control and Prevention and health specialists have reported 145 cases [1] of Cyclospora infection across 17 U.S. states [1].
This outbreak highlights the risks associated with food supply chains and water safety, as the parasite often contaminates fresh produce and spreads rapidly across state lines.
Cyclospora, which causes the illness known as cyclosporiasis, is an intestinal parasite. According to the CDC and infectious disease specialists including Dr. Carlos del Río, the parasite is transmitted to humans through water or food contaminated with feces [1, 2]. This contamination often occurs in fruits and vegetables, leading to widespread diarrheal illness [2].
Health officials said that the affected regions include California, Colorado, New Mexico, and Arizona [1, 2]. The cases were reported in 2024 [1, 2].
Patients infected with the parasite typically experience persistent diarrhea, abdominal pain, and vomiting [1]. Because the illness can be prolonged, medical intervention is often necessary to resolve the symptoms.
Medical specialists said the recommended treatment for the infection is a specific antibiotic known as trimethoprim-sulfamethoxazole [1].
Public health agencies continue to monitor the spread of the parasite to identify the specific food sources responsible for the contamination. The 17 states [1] currently reporting cases are working with federal authorities to prevent further transmission through contaminated produce.
“The parasite is transmitted through water or food contaminated with feces.”
The emergence of cyclosporiasis across multiple states indicates a systemic vulnerability in the agricultural supply chain, where produce from a single contaminated source can reach diverse geographic markets. Because the parasite is resistant to standard chlorine disinfection, this outbreak underscores the need for more rigorous testing of imported and domestic fresh produce to protect public health.
