West Nile virus

"Mosquito" By Flickr User Tom / (CC X 2.0)

A batch of mosquitoes collected near Genoa has tested positive for West Nile Virus.


This is the first time this year a DeKalb County Health Department mosquito trap has yielded a positive test for West Nile.  


West Nile virus transmitted through the bite of a mosquito that has picked up the virus by feeding on an infected bird. 


Health officials say that mosquitoes which carry West Nile virus breed in stagnant water, like street catch basins and ditches, and multiply rapidly.


"Blue Jay" By Flickr User Robert Engberg / (CC X 2.0)

Illinois’ Department of Public Health announced its first positive test of a bird for West Nile virus in the state this year.


The Blue Jay was collected south of Champaign in Arcola Township last May.

Zika virus and West Nile are both transmitted by mosquitoes.

Common symptoms of West Nile virus include fever, nausea, headache and muscle aches. Symptoms can last from a few days to a few weeks.

However, four out of five people infected with the virus will not show any symptoms.

West Nile Virus Detected In DeKalb County

Jul 17, 2015
CDC / http://www.cdc.gov/Features/stopmosquitoes/index.html

Health officials in DeKalb County detected the first mosquitoes with West Nile Virus this summer.

Municipalities say they monitor catch basins that help eliminate mosquitoes, but recent heavy rains may have flushed out mosquito larvae.

Several other counties in the state already reported cases of West Nile Virus in mosquitoes this year. But there has yet to be a human case so far.

The mosquitoes get the virus from feeding on dead birds. The Health Department is collecting dead birds to be sent to the state lab for testing.

A dead bird found in Winnebago County has tested positive for West Nile Virus, which is much earlier than last year when the first positive bird in the county was found on September 2, according to a news release from the Winnebago County Health Department.

Warmer temperatures can increase the rate of Culex mosquito production, flight activity and virus replication, which results in an increased number of WNV infected mosquitos.

James Gathany / CDC

Two elderly women in northern Illinois have died after contracting West Nile virus.