Winnebago County Health Department

West Nile Virus Program

West Nile Virus Program

The Winnebago County Health Dept. investigates and monitors the mosquito population throughout the season of May-October. One of the first indicators of a problem is the sudden increase of dead birds; mainly crows. Calls can be made to our "dead crow" hotline at: (815) 720-4245 to report the location. Random pick ups and testing are then made to determine the possible presence of the West Nile Virus.

Traps are placed at random throughout the County to monitor the population and test for positive WNV readings from mosquito pools.

 Remember the 5 D’s

DUSK: Mosquitoes carrying West Nile Virus usually bite at dusk and dawn.
DAWN: Avoid outdoor activity at dusk and dawn if possible. If you must be outside, be sure to protect   yourself from bites.
DRESS: Wear long-sleeved shirts and pants to reduce the amount of exposed skin.
DEET: Cover exposed skin with an insect repellent containing the chemical DEET, which is the most effective repellent against mosquitoes.
DRAIN: Empty any containers holding standing water because they can be excellent breeding grounds for virus-carrying mosquitoes.
2 Positive Crows Test Positive for West Nile Virus Press Release - August 2013
First Positive Pool for WNV In Winnebago County Press Release - July 2013
West Nile Virus Season Surveillance Begins In Winnebago County - May 2013
WNV Positive Crows in Winnebago County Press Release - July 2012
2012 West Nile Virus Season

Mosquito Prevention Around the Home

Illinois Dept. of Public Health - West Nile Virus

Centers for Disease Control - Fight the Bite

Frequently Asked Questions

2009 WNV Surveillance Overview of Activities

Encephalitis is carried by mosquitoes and there are 3 kinds of encephalitis viruses that cause human disease in Illinois. The most common form is known as West Nile Virus. This strain is an infection of birds and primarily affects older adults if bitten by an infected mosquito.

Mosquitoes can also affect dogs with heartworm. These heartworms can severely weaken or kill a dog if left untreated.

Fight the Bite  (Printable Brochure)

Click HERE to View the 2010 Pamphlet on How to Protect
Yourself From Mosquitoes & West Nile Virus This Season