Tickborne Diseases

The Wisconsin Department of Health Services and the local health department investigate several tickborne diseases, in addition to Lyme disease, including babesiosis, ehrlichiosis (both human granulocytic anaplasmosis and human monocytic ehrlichiosis) and Rocky Mountain spotted fever. The number of cases of these diseases is much smaller in comparison to the cases of Lyme disease, but their numbers are also increasing.

Additional information:    

• Babesiosis 
  Reported in Wisconsin - 2000-2011 (PDF, 46 KB)
• Ehrlichiosis/Anaplasmosis (Exit DHS)   
     Reported in Wisconsin - 1999-2007  
     Reported in Wisconsin by County - 2007
     Case Report Form (PDF, 531 KB)
  Fillable Case Report Form (PDF, 494 KB)
• Lyme Disease 
• Powassan virus infection (Exit DHS)   
     Powassan in Wisconsin residents (PDF, 63 KB)
     Case Report Form (PDF, 45 KB)
• Spotted Fever Group Rickettsia (Rocky Mountain Spotted Fever)
     Case Report Form (PDF, 531 KB)

Characteristics of Tickborne Diseases in Wisconsin Chart  (PDF, 15 KB)

The image below identifies two of the ticks commonly found in WI, the blacklegged (or deer) tick and the dog (or wood) tick.  In Wisconsin, the blacklegged tick can transmit Lyme disease, anaplasmosis, babesiosis, and Powassan virus infection (a rare tickborne arbovirus illness).

For tick-borne disease information in your community contact your local health department or:

Ehrlichiosis/Anaplasmosis, Lyme Disease 
Spotted Fever Group Rickettsia (Rocky Mountain Spotted Fever) 
Powassan Virus Infection   

Babesiosis

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Last Revised: April 13, 2012