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Spotted Fever Group Rickettsiosis

Spotted fever group rickettsiosis (SFGR) is a rare illness in Wisconsin. It’s caused by one of the Rickettsia bacteria in the spotted fever group. The most serious SFGR is Rocky Mountain spotted fever

SFGR spreads by the bite of an infected tick. Not all tick bites will make you sick, but it’s important to protect yourself and your family while enjoying time outdoors.

SFGR is preventable and treatable. Learn more about Tick Bite Prevention.

Read about Signs and Symptoms, as well as Treatment, from the CDC (Centers for Disease Control and Prevention).

Learn more about SFGR, including signs and symptoms, treatment, and resources.

Map and charts with SFGR data.


Local or tribal 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 about SFGR

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 3, 2023