The Erie County Department of Health is reporting 7 (seven) confirmed cases of cyclosporiasis in Erie County residents. The Centers for Disease Control and Prevention has reported over 1,645 confirmed cases across the United States since May 1st, 2026. An additional 5,100 cases are currently being investigated as potential or suspect cases. Cases have been confirmed in 34 states including Pennsylvania. A single source of the cause of this increase in cases has not been identified. Early reports indicate that lettuce and/or diced tomatoes may be contributing to some of the cases but due to the volume of cases, investigations are ongoing. There are several clusters of cases nationwide that are being investigated by the Food and Drug Administration.
Erie County Department of Health is working to provide education and resources to health care providers and community members. Cyclosporiasis is a gastrointestinal illness caused by a parasite. Symptoms include “explosive” watery diarrhea, loss of appetite, bloating, stomach cramps, and fatigue. Nausea and vomiting are much less common. Cyclosporiasis is transmitted via a fecal to oral route commonly through contaminated food or water. It is not known to be transmittable from person to person. Sources of previous cyclosporiasis outbreaks include contaminated foods such as basil, cilantro, lettuce, raspberries, and snow or snap peas. Healthcare providers should have a heightened clinical suspicion for cyclosporiasis in individuals with compatible symptoms.
Although handwashing and cleaning produce is always recommended, these methods do not necessarily kill the cyclospora parasite.
If someone believes they may have been infected with the cyclospora parasite, they should contact their primary care provider for guidance on testing and symptom management. Individuals should consider seeking emergency care if they experience symptoms of dehydration including decreased urine output, dark colored urine, dry mouth, or dizziness. Testing typically involves collecting and testing a stool sample.
Cyclosporiasis is a voluntary reportable disease in PA, meaning healthcare providers are not required to report cases to their local health department. However, Erie County Department of Health staff are encouraging healthcare providers to submit reports. Health department staff are monitoring the situation and will support and investigate cases that may be reported. If an individual receives a call from the health department, they can anticipate questions about recent travel, exposures and interactions with animals, and food they have eaten in the past 10-14 days before developing symptoms.
For more information, visit: https://eriecountypa.gov/departments/health/services-and-programs/health-and-wellness/cyclosporiasis/
