West Nile Virus
What is West Nile virus infection?
The West Nile virus infection is spread by the bite of infected mosquitoes and usually causes a mild illness, but can also cause encephalitis (inflammation of the brain) or meningitis (inflammation of the lining of the brain and spinal cord). This virus is named after the West Nile region of Uganda where the virus was first isolated in 1937. In North America, West Nile virus first appeared in 1999. In Jefferson County WNV was first confirmed in 2002.
Regardless of mosquito activity at any location, it is important to remember the 4 D's throughout the summer:
- Use DEET or alternative.
- DRESS in long sleeves and pants.
- Avoid DUSK until DAWN.
- DRAIN standing water.
Although 43 different species of mosquitoes can carry the West Nile virus, Culex species are the primary carriers of the virus in Colorado. More on Culex
State of Colorado West Nile Virus Information
Interactive Map of West Nile Surveillance
Last Modified: Oct 15, 2012 01:40 PM