Rocky Mountain Spotted Fever

Rocky Mountain spotted fever (RMSF) is an illness spread in Wisconsin by the wood tick, also known as the American dog tick. Ticks that can spread RMSF are found in every county in Wisconsin. 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. RMSF is preventable and treatable.

General information on RMSF including information on signs and symptoms, treatment, and resources.

Charts with RMSF data.


Information for local health departments, health care providers, or those looking for information on reporting, surveillance, or diagnosis of RMSF.

Tips to prevent tick bites.

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

Last Revised: January 27, 2020