WELD COUNTY – The Weld County Department of Public Health and Environment (WCDPHE) is investigating a potential case of West Nile Virus (WNV) in a Weld County resident. While this is the first case of the 2024 mosquito season, last year there were 52 cases of WNV investigated in Weld County.
This year, Culex mosquito numbers are lower than our 5-year average; however, currently Culex mosquitoes are making up about 50 percent of mosquitoes that are trapped in the three sentinel zones in Weld County, which include the Greeley, Evans, Kersey, LaSalle area, the Johnstown, Milliken, and Platteville area, and the Firestone, Dacono, and Fort Lupton area. These mosquito traps are monitored on a weekly basis and mosquitoes in all three zones have tested positive for WNV.
