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Rabies Epidemiology in Wisconsin

The primary reservoirs of the rabies virus in Wisconsin are bats and skunks. Domestic animals become infected from exposure to these wildlife reservoirs. Historically, skunks have been the predominant species infected by rabies (Figure 2), but for the past decade the number of positive bats has exceeded that of skunks (Figure 3).

Graph showing animal rabies in skunks versus other wisconsin animals from 1962 to 2009

graph showing positive bats cases have exceeded the cases of rabies in skunks from 1989 to 2009

Geographically, animal rabies causes are widely dispersed in Wisconsin, and occur in both rural and urban areas. Figure 4 shows the geographic distribution and species of cases diagnosed from 2003 through 2007.

Map showing geographic distribution and species of cases diagnosed from 2003 through 2007

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Last Revised: October 24, 2011