Detection is an important part of West Nile virus planning. It includes surveillance of mosquitoes as well as human activity.
Surveillance is maintained through partnerships among Boulder County government, health care providers, veterinarians, and contracted mosquito control providers.
Although 43 different species of mosquitoes can carry the West Nile virus, Culex species are the primary carriers of the virus in Colorado. BCPH focuses on these species for surveillance, control, and as an indicator of risk for human exposure to West Nile Virus.