Cyclosporiasis Outbreak Spans Nine States, Over 11,500 Cases Suspected

The Centers for Disease Control and Prevention (CDC) is investigating the largest cyclosporiasis outbreak on record, which has expanded to nine U.S. states this week. As of the latest reports, over 11,500 individuals are suspected to have been sickened by the parasitic illness this summer. This outbreak is characterized by symptoms that can include explosive diarrhea.

The CDC's data, released this week, indicates that the agency is actively examining 4,173 laboratory-confirmed domestic cases of cyclosporiasis. In addition to these confirmed cases, the CDC is also investigating an additional 7,400 suspected cases, bringing the total number of individuals potentially affected to over 11,500. The agency's surveillance data tracks the spread and impact of the disease across the country.

Cyclosporiasis is an intestinal illness caused by the parasite Cyclospora cayetanensis. It is typically contracted by consuming food or water contaminated with the parasite's oocysts. Symptoms often include frequent, sometimes explosive, watery diarrhea, loss of appetite, stomach cramps, bloating, and fatigue. While most healthy people recover without treatment, the illness can be severe and prolonged in some individuals, particularly those with weakened immune systems. The CDC's ongoing investigation aims to identify the source of the contamination to prevent further spread and illness.