• What is a Corvid?
A corvid is a bird that is a member of the Corvidae family (or crow family), which includes crows, blue jays and ravens. Corvids appear to be especially susceptible to West Nile virus infection and can be used as an early indicator of the virus in an area.

• WNV Testing

• Corvids Reported by Zip Code 
Map of corvids reported via the on-line reporting form found dead or with symptoms of West Nile virus infection.

• Corvids Submitted for WNV Testing by County 
Map of corvids submitted to Michigan State University (MSU), Diagnostic Center for Population and Animal Health (DCPAH) for West Nile virus testing. Not all birds submitted are tested.

• WNV Positive Corvids by Zip Code 
Map of corvids testing positive for West Nile virus in 2008 at MSU, DCPAH.

• Corvid Testing Results by County
Map of corvids testing positive for West Nile virus in 2008.

• Human Testing Results
Map of human testing results confirmed by the Michigan Department of Community Health, Bureau of Laboratories.

• Equine Testing Results
Map of results of testing on equines (horses) submitted to MSU, DCPAH.

• Domestic and Zoo Animal Testing Results
Map of results of testing on domestic and zoo animals (excludes horses) submitted to MSU, DCPAH.

• Wildlife Testing Results
Map of results of testing on wild birds and mammals (excludes corvids) submitted to Michigan State University, Diagnostic Center of Population and Animal Health.

• Mosquitoes Positive for WNV Testing by Zip Code 
Map of results of testing on mosquitoes by MSU, Department of Microbiology and Molecular Genetics.

• Other Arbovirus Testing Results
Map of results of testing for arboviruses (insect-borne viruses) other than WNV in humans, as diagonosed by MDCH, BOL.

• Domestic and Zoo Animal Testing Results 
Table of testing results on domestic and zoo animals (excludes horses) submitted to MSU, DCPAH. Table is updated as testing results become available.

• Week-by-Week Summary of Corvids Reported by County 
Table of corvids reported via the on-line reporting form, by week and by county. Corvid numbers per week are based on the date the bird was observed sick or dead. Only counties with corvid birds reported will be listed.

• All Wildlife Reported
Table of all wildlife reported (includes corvids) via the on-line reporting form, updated daily at 4 a.m.

• Corvid Testing Results by County 
Table of testing results on corvids by county and zip code and by swab ID, submitted to MSU, DCPAH. This table is updated as results become available.

• Wildlife Testing Results (excludes corvids) 
Table of testing results on non-corvid birds and mammals submitted to MSU, DCPAH. Table is updated as results become available.

• Corvids Reported by County
Table of corvids reported via the on-line reporting form, updated daily at 4 am. Only counties with corvids reported sick or dead will be listed in the drop-down box.

• Human Testing Results
West Nile virus human cases by county, age, sex and fatality, confirmed by the Michigan Department of Community Health, Bureau of Laboratories.

• Equine Testing Results
Table of testing results on equines (horses) submitted to MSU, DCPAH. Table is updated as data becomes available.

• Mosquito Testing Results 
Table of testing results on mosquitoes tested by MSU, Department of Microbiology and Molecular Genetics.

• 2007 Surveillance Maps

• 2006 Surveillance Maps

• 2005 Surveillance Maps

• 2004 Surveillance Maps

• 2003 Surveillance Maps

• 2002 Surveillance Maps

• 2001 Surveillance Maps

• 2007 Tables

• 2006 Tables

• 2005 Tables

• 2004 Tables

• 2003 Tables

• 2002 Tables

• 2001 Tables