West Nile Virus

The Champaign-Urbana Public Health District (C-UPHD) and the Champaign County Public Health Department (CCPHD) survey mosquito pools to detect and monitor the presence of WNV in Champaign County. During the months of May through October, mosquitoes are trapped at various sites and are tested to determine if WNV is present and to what extent. If WNV is detected in mosquito populations, the C-UPHD and the CCPHD work with local units of government and the media to inform and educate the public.

The C-UPHD contracts with the City of Champaign, the City of Urbana, and the Village of Savoy to provide a mosquito abatement program. Larvicides, which disrupt the life cycle of mosquitoes, are applied to all municipal catch basins that hold standing water. These products are specifically designed to prevent adult mosquito emergence and will not adversely affect humans or mammals.

The Illinois Department of Public Health has discontinued dead bird collection for West Nile Virus (WNV) surveillance for the 2025 season due to the H5N1 avian influenza outbreak.  The Champaign-Urbana Public Health District will not be collecting dead birds for WNV testing in 2025. Please refer to the Illinois Department of Public Health for safe disposal of dead birds.

To learn more about WNV and other mosquito-borne diseases, and about prevention methods, contact us at 217-373-7900 or 217-363-3269. For West Nile virus statistics statewide, visit the Illinois Department of Public Health website.

West Nile virus (WNV) is most commonly transmitted to humans by mosquitoes. The most effective way to avoid West Nile virus disease is to prevent mosquito bites. Be aware of the West Nile virus activity in your area and take action to protect yourself and your family.

There are several mosquito species found in Illinois. WNV is predominantly transmitted locally by the Culex mosquito. Culex mosquitoes feed between dusk and dawn and do not fly far from where they develop.