Babesiosis
Babesiosis is an illness spread by the deer tick. The deer tick is also known as the black-legged tick. Ticks that spread babesiosis can be found in every county in Wisconsin. Babesiosis is caused by a parasite called Babesia that infects red blood cells.
Not all tick bites will make you sick, but it’s important to protect yourself and your family while enjoying time outdoors.
Babesiosis is preventable.
About Babesiosis
Learn more about babesiosis, including signs and symptoms, treatment, and resources.
Data
View maps and charts with babesiosis data.
Reporting and Surveillance
Local health departments and health care providers can learn about disease reporting, testing, treatment, and more.
Tick Bite Prevention
Find tips to prevent tick bites.
Learn more about babesiosis 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