TOPEKA — The Kansas Department of Health and Environment on Wednesday reported 55 total cases of cyclosporiasis so far in 2026, with officials warning that domestically acquired infections have accelerated since late June.
What changed for residents
Of the 55 cases reported to KDHE, 37 are classified as domestically acquired, 17 were likely linked to international travel and one case remains undetermined. Health officials say 30 domestically acquired cases were logged after June 24, signaling a recent uptick.
KDHE is coordinating with local health departments to interview those who have been sick to identify potential common exposures and prevent further illnesses. Individuals who test positive for cyclosporiasis are being asked to cooperate with local staff conducting the investigations.
Background and regional context
Cyclosporiasis is caused by the parasite Cyclospora cayetanensis. The organism is typically associated with contaminated food or water and is more common in tropical and subtropical regions. In recent years, the United States has seen periodic outbreaks linked to contaminated fresh produce.
Nationally, since May 1 the U.S. Centers for Disease Control and Prevention has received reports of 1,645 confirmed domestic cases and is tracking more than 5,100 additional reports pending classification. Among confirmed U.S. cases, there have been 141 hospitalizations and no deaths reported.
How Kansas compares to previous years
| Year | Kansas cases |
|---|---|
| 2021 | 69 |
| 2022 | 24 |
| 2026 (to July 15) | 55 |
Case counts in Kansas have varied year to year. From 2020 through 2025, the state averaged about 43.5 cases annually. Through the same date in 2025, Kansas had reported 23 cases, meaning this year's total is notably higher so far.
Practical advice and public-health actions
- Those diagnosed with cyclosporiasis should speak with the local health department investigator when contacted.
- Because Cyclospora is typically spread by contaminated food or water, officials emphasize the importance of food safety and proper hygiene, especially with fresh produce.
- Health departments continue routine surveillance and interviews to try to identify a common source and issue targeted guidance if one is found.
KDHE said the state’s cases to date have not been linked to outbreaks in other states. Health officials are urging clinicians to consider cyclosporiasis when patients present with prolonged diarrhea and to report confirmed cases promptly so investigators can identify potential exposures.
This article will be updated as KDHE and local health departments release new information.
