Larimer County has had more cases than any other Colorado county since the virus was first detected in 2002 and began being tracked in 2003. There are a few reasons why Larimer and Weld counties ...

Spraying for West Nile virus-infected mosquitoes is planned for central Fort Collins. On Aug. 17, the spraying of a fine mist of permethrin-based product will occur within the following boundaries: ...

A mosquito pool collected in the Delta area has tested positive for West Nile Virus (WNV). This is the first confirmed pool ...

An unvaccinated Quarter Horse filly in Montrose County, Colorado, recently tested positive for West Nile virus (WNV) after ...