Borrelia miyamotoi: Wisconsin Data

Borrelia miyamotoi disease is a rare illness in Wisconsin. Deer (blacklegged) ticks infected with B. miyamotoi bacteria can spread the illness. The first confirmed case in the state was in 2016. There have been 35 confirmed cases of B. miyamotoi disease from 2016 to 2024.

B. miyamotoi infections are preventable. Learn more about Tick Bite Prevention.

The graphs below show statewide data for B. miyamotoi.

Borrelia miyamotoi data

B. miyamotoi cases in Wisconsin

B. miyamotoi cases reported by month of illness onset

B. miyamotoi cases reported by age group

Learn more about Borrelia miyamotoi

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Questions about illnesses spread by ticks? We’re here to help.

Bureau of Communicable Diseases
Phone: 608-267-9003
Fax: 608-261-4976