West Nile Virus: Surveillance Map 2003

Wisconsin counties with West Nile virus activity in 2003
Final 2003 Update:  January 8, 2004

(Human cases are considered probable based on the presence of WNv antibodies.  Confirmation by the U.S. Centers for Disease Control and Prevention is required.)

Table showing county surveillance counts

Table showing county bird surveillance counts

Surveillance Maps for:   2005  |  2004  |  2003

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Last Revised: April 02, 2008