West Nile Virus

The main route of human infection with West Nile virus is through the bite of an infected mosquito. Mosquitoes become infected when they feed on infected birds, which may circulate the virus in their blood for a few days. The virus eventually gets into the mosquito’s salivary glands. During later blood meals (when mosquitoes bite), the virus may be injected into humans and animals, where it can multiply and possibly cause illness.

Sampling devices useful for the collection of Culex and Aedes adults

Traps and Aspirators

Additional Products and Accessories

Background Web Links

Centers for Disease Control (CDC)

US Geological Survey

  • USGS West Nile Links
  • West Nile Virus Maps from National Atlas (USGS)
  • USGS Virus Maps

Additional Links