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Lyme Disease

Within the United States, Lyme disease occurs most often in the Northeast and Upper Midwest. In Wisconsin, Lyme disease is the most common illness spread by ticks.

The ticks that spread Lyme disease can be found in every county in Wisconsin. Not all tick bites will make you sick, but it’s important to protect yourself and your family while enjoying time outdoors.

Lyme disease is preventable and treatable. Learn more about Tick Bite Prevention.

Read about Treatment for Lyme disease from the CDC (Centers for Disease Control and Prevention).


Learn more about Lyme disease, including signs and symptoms, treatment, and resources.

Maps and charts with Lyme disease data.


Local health departments and health care providers can learn about disease reporting, testing, treatment, and more.

Tips to prevent tick bites.


Learn more from the CDC

Contact us

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

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

Last revised January 6, 2023