• WNV in Humans
West Nile virus is a disease of birds that can cause illness in people when they are bitten by an infected mosquito. It was first detected in Michigan citizens in August of 2002.

• WNV Risks
While the risk of developing serious illness from West Nile virus is low, people over the age of 50 and those with compromised immune systems are most at risk for developing severe illness.

• WNV Symptoms
Most people infected with West Nile virus have no symptoms.

• WNV Prevention
Preventing West Nile virus and other arboviruses centers around controlling exposure to mosquitoes and avoiding mosquito bites.

• WNV Treatment
There is no treatment for West Nile virus illness beyond supportive care. Mild symptoms usually resolve within a few days.

• Other Arboviruses
There are arboviruses (insect-borne viruses) other than West Nile virus that occur in Michigan.

• WNV and Using Mosquito Repellents
Using mosquito repellents containing DEET is remarkably safe when used according to the product label directions.

• Concerns of Health Effects of Pesticides
Links to information on adverse effects of pesticides.

• WNV Monitoring in Humans
The Michigan Department of Community Health, Bureau of Laboratories performs testing for West Nile virus and other arboviruses in the state.

• WNV Human Cases
West Nile virus human cases in 2003-2008 by county, age, sex and fatality, confirmed by the Michigan Department of Community Health, Bureau of Laboratories.

• WNV Human Surveillance Maps
Maps of the 2002-2008 human West Nile virus testing results in Michigan.

• Surveillance Maps of other Arboviruses
Maps of 2002-2008 testing results for other arboviruses in humans in Michigan.

• WNV Case Reporting
The Michigan Public Health Code requires physicians, clinical laboratories, schools, childcare centers, and camps to report certain diseases, conditions or infections, including West Nile virus.

• WNV Specimen Collection and Submission
Instructions on submitting samples for West Nile virus testing to the Michigan Department of Community Health.

• Laboratory Testing for WNV
Details on West Nile virus laboratory testing performed by the Michigan Department of Community Health.

• WNV and Pregnancy

• NEW! Information and Guidance for Clinicians from CDC

• Information for Health Care Providers

• Information for Game Bird Hunters

• Information for Ornithologists and Bird Banders

• Information for Lab and Field Workers

• MDCH Viral CNS Case Reporting Form 

• MDCH Microbiology/Virology Test Requisition Form 

• MDCH Testing Kit Order Form