West Nile Virus Control Program

West Nile Virus Control Program

Health Department Initiatives in Public Education, Surveillance and Response to WNV

Increasing public awareness of the need for mosquito control, ongoing surveillance of vulnerable   populations and coordination of response to outbreaks offers the best chance of controlling this disease

The Environmental Health Division takes a lead role in county efforts to combat outbreaks of West Nile virus (WNV) by raising public awareness about the disease through education, helping to ensure surveillance of potentially infected humans, mammals and birds and controlling the spread of the disease. West Nile Virus is a mosquito-borne virus that can cause mild illness (West Nile fever) or severe symptoms (encephalitis or meningitis) in humans and other animals bitten by infected mosquitoes. Mosquitoes become infected when they feed on birds that carry the virus in their blood. Currently, no vaccine against WNV is available so that mosquito abatement is one of the main tools that can be used to reduce the incidence of the disease. People over the age of 50 are more likely to develop serious symptoms of WNV if they do get sick and should take special care to avoid mosquito bites. WNV is now considered to be an endemic pathogen in many parts of the world including the United States.

West Nile Virus Precaution Makes the News

West Nile Virus Precaution Makes the News

WCHD Staff on CBS2 Monday

Our own Katie Nelson from the Will County Health Department Environmental Health Division explains trapping and collection to Mike Parker of CBS Chicago News during a news segment Monday night. Click to watch the video clip of the news segment.

Response to the Threat of WNV

Informing the Public and Testing in Response to an Outbreak

In the event of a dead bird actually testing positive for WNV or the identification of suspected or confirmed human cases, the department will immediately notify the public of the situation and provide advice on how they may best protect themselves. 

West Nile Virus FAQ's

West Nile Virus is the Virus that can cause the Disease West Nile Encepha­litis

How is it transmitted? 

West Nile Virus is transmitted through the bite of mosquitoes that are infected with the virus.  Mosquitoes get the virus by feeding on dead birds that are infected.  The incubation period for humans (time of infection to onset of the disease) is usually three to five days. 

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