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Healthy People. Healthy Choices.
Healthy Lake County.
Tony Beltran, MBA, Executive Director.
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Health of Lake County
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West Nile Virus 
West Nile Virus (WNV) was first discovered in the U.S. in New York in 1999. September 2001 marked the first time the virus was identified in Illinois. In 2002, the first human cases of WNV infection in Lake County were confirmed. Since then, there have been a total of 48 human cases in the county with two confirmed deaths.  The Health Department and Community Health Center continues to work with the Illinois Department of Public Health and other agencies to prevent and minimize this infection in humans.

For more information regarding current and past West Nile Virus activity in Illinois and Lake County, please click here.

The Lake County Health Department actively conducts a multi-faceted mosquito surveillance program in Lake County. Beginning in late-spring and continuing into the autumn, a series of traps are set around the county, including within the Lake County Forest Preserves. At each site a pool, or batch, of mosquitoes is tested weekly for West Nile virus. Areas of stagnant water are also investigated throughout the season for the presence of mosquito larvae, specifically from the Culex mosquito which is the primary carrier of West Nile in Illinois. Finally, the locations of dead birds are monitored to assist in the assessment of potential West Nile virus activity. The Health Department works closely with the municipalities, townships, and the Lake County Forest Preserve District in monitoring the mosquitoes that may pose a public health threat.

Contact Us For Questions Regarding:

Mosquitoes and Environmental issues:
Lakes Management Unit
Monday - Friday, 7:00 AM to 5:00 PM 847.377.8002
After Hours 24/7 Emergency Number: 847.377.8020

Birds and other animals:
Animal Control
Monday - Friday, 8:30 AM to 4:30 PM 847.949.9925

Signs and symptoms and other questions regarding the epidemiology of this disease in humans:

Communicable Disease Program
Monday - Friday, 8:30 AM to 5:00 PM: 847.377.8130
After Hours 24/7 Emergency Number: 847.389.4431

Links to Additional Sites With Information on West Nile Virus

Illinois Department of Public Health
DEET Insect Repellents
Q and A About Mosquito Prevention
Q and A About Mosquito Spraying

Centers For Disease Control
Pesticides and Public Health
Background of West Nile Virus

Lake County Forest Preserves Information
Latest Lake County Surveillance Data
Products and Promotions that have Limited Value for Mosquito Control

University of Illinois Extension
Community Mosquito Management

U.S. Environmental Protection Agency
West Nile Virus Information in Spanish:
Illinois Department of Public Health

Google Translations are an approximation of the...
Contact Us
Population Health Services
Mark Pfister, Director
3010 Grand Avenue
Waukegan, IL 60085
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