Federal public health officials are investigating a multistate Cyclospora outbreak that has sickened at least 145 people in 17 states since May 1, 2026. The source of the contamination has not yet been identified, and summer — now underway — is the peak season for this intestinal parasite in the United States.
According to the CDC, local, state, and federal public health authorities are investigating several clusters of cases, with illness onset dates ranging from May 1 through June 7, 2026. Three people have been hospitalized. No deaths have been reported.
