Kansas cyclospora cases continue to climb

Kansas cyclosporiasis cases surge, with Johnson County leading the rise.

By

State News

July 23, 2026 - 3:51 PM

Kansas cases of cyclosporiasis, an illness caused by eating fruits and vegetables contaminated with a Cyclospora cayetanensis, have increased substantially. Health officials say lettuces and salad greens are emerging as a likely source in the nationwide cyclosporiasis outbreak, which has sickened thousands of people across 31 states. Photo by Jon King/Michigan Advance

Cyclosporiasis cases in Kansas have jumped more than fivefold in a week. And Johnson County is leading the increase.

Last week the Kansas Department of Health and Environment counted 55 cases of cyclosporiasis, an intestinal illness caused by the cyclospora parasite.

The latest numbers from Wednesday show 289 known cases in Kansas, 95 in Johnson County alone. Wyandotte County recorded 11 cases.

Dr. Dana Hawkinson at the University of Kansas Health System says that’s likely an undercount.

“I think there is that concern that cases are being missed just because sometimes you can be asymptomatic, sometimes you can have an episode or two or maybe one day of feeling bad,” Hawkinson said.

Cyclosporiasis is not a new disease, but typically only about 500 cases a year crop up nationwide. Health officials have documented well over 4,000 cases so far this year. Michigan has been especially hard hit.

The good news is that the cyclospora parasite doesn’t normally transmit directly from person to person.

“Most of the time it is food,” Hawkinson said. “That is why it is so vitally important to understand where is the source of this contamination and how do we stop it.”

Fresh produce can carry the cyclospora parasite. Investigators suspect that iceberg lettuce shipped to Taco Bells from Taylor Farms may be at least part of the problem.

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