KCCI Investigates: Iowa Cyclospora cases likely may be part of national outbreak - KCCI

What the report says

KCCI Des Moines reports that Iowa health officials are investigating whether some cyclosporiasis cases in the state are connected to a broader national outbreak. The report, updated July 26, says Iowa Health and Human Services is following up with affected people and sending information to the U.S. Centers for Disease Control and Prevention after case interviews are completed.

According to KCCI, Iowa had recorded 184 cyclosporiasis cases in 2026 as of Thursday, compared with 61 at the same point in 2025. State officials said interviews had been completed for 117 cases, including 45 people who reported international travel. The station also reported that the parasitic illness has been linked to thousands of cases across nine states, though the article did not identify a specific food source or single cause.

KCCI reported that Iowa HHS uses symptom consistency along with either a positive lab test or an epidemiological link to a confirmed case when assessing cases. That matters because cyclosporiasis can be difficult to trace: infections are often associated with contaminated food or water, and public health agencies commonly rely on interviews about travel, food history and exposure patterns to identify possible clusters.

General background: Cyclosporiasis is caused by the Cyclospora parasite and can lead to prolonged gastrointestinal illness, including severe diarrhea. The information in KCCI’s report indicates Iowa’s current case count is substantially higher than last year’s pace, but state and federal officials had not, based on the published article, announced a confirmed source for the Iowa cases.