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The Glenn County Mosquito & Vector Control District (GCMVCD) uses many different methods to monitor mosquito populations, and mosquito-borne disease. The GCMVCD's surveillance program is used for locating mosquito populations usually focusing on mosquito breeding sources, monitoring mosquito populations, and mosquito-borne disease. The GCMVCD utilizes 14 New Jersey Light Traps, 21 EVS Traps and 1 Sentinel Chicken Flock that are strategically placed throughout Glenn County. The data that is collected from our surveillance programs guide district staff to parts of Glenn County that have a high abundance of mosquitoes and it also helps detect mosquito-borne viruses so that district staff can monitor them and focus control efforts in those areas of concern. The GCMVCD monitors for Western Equine Encephalitis (WEE), St. Louis Encephalitis (SLE), and West Nile Virus (WNV)

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Mosquitoes covering the leg of GCMVCD staff in a pasture east of Willows.

GCMVCD Staff spends most of the day inspecting and treating potential mosquito development sites (sources) within the Service District boundaries. These inspections may occur in rice fields, wetlands, pastures, ditches, storm drains, catch basins/return systems, residential sources, neglected swimming pools, and various other man made sources where standing water is present.