The Centers for Disease Control and Prevention (CDC) reported over 20,000 suspected cases of cyclosporiasis this week, marking the largest outbreak of the parasite in U.S. history. The CDC has confirmed 10,468 cases of domestically acquired cyclosporiasis across 47 states, with an additional 12,255 cases pending confirmation. If these cases are confirmed, the total could exceed 22,700.
Delaware, Hawaii, and Montana are the only states without confirmed cases as the CDC investigation continues. The agency has expanded its investigation to 15 states, including Arkansas and Missouri, with Michigan reporting the highest number of cases at over 12,200.
Michigan health officials confirmed that two infected patients died, both of whom had significant underlying health conditions. This outbreak is believed to be linked to contaminated iceberg lettuce from Mexico, which Taylor Farms recalled last month. Although an initial test of a lettuce sample from Taylor Farms was a false positive, the Food and Drug Administration (FDA) maintains a connection to the outbreak, with many cases traced back to Taco Bell. No other sources have been identified by the FDA.
Cyclosporiasis is caused by the parasite Cyclospora cayetanensis, leading to symptoms such as diarrhea, appetite loss, bloating, fatigue, low-grade fever, stomach cramps, nausea, and vomiting. The disease spreads through contaminated food or water, with symptoms typically appearing about a week after infection, complicating early detection. Patients are advised to stay hydrated if they exhibit symptoms.