Spotted Fever Group Rickettsiosis

Spotted fever group rickettsiosis (SFGR) is a rare illness in Wisconsin caused by one of the spotted fever group Rickettsia bacteria. The most serious SFGR is Rocky Mountain spotted fever. SFGR can be spread in Wisconsin by the bite of an infected tick. Not all tick bites will make you sick, but it is still important to take steps to protect yourself and your family while enjoying time outdoors. SFGR is preventable and treatable.

General information about SFGR, including information on signs and symptoms, treatment, and resources.

Charts with SFGR data.


For local health departments, health care providers, or those looking for information on reporting or surveillance of SFGR.

Tips to prevent tick bites.

Questions about illnesses spread by ticks? Contact us!
Phone: 608-267-9003 | Fax: 608-261-4976

Last Revised: December 17, 2021