The DuPage County Health Department has notified the City of a confirmed human case of the West Nile virus in Naperville. The adult male who contracted the virus was infected in August, and lives in east Naperville. The City of Naperville continuously monitors and tests its 10 mosquito traps each week to check for any that could be carrying harmful viruses.

One trap on Shagbark Court tested positive for West Nile Virus the weeks of Aug. 20, 27, and Sept. 3. Since that time, City crews have sprayed the area as a precaution, checked the area for breeding sites and re-treated area catch basins.

To help control the mosquito population in Naperville, City crews inspect for and remove standing water and treat ponds, marsh areas and catch basins throughout the City with chemicals. City crews also monitor the mosquito population on a weekly basis through the use of mosquito traps to evaluate the effectiveness of larval control, provide early warnings for when adult populations are rising and also test for West Nile Virus. When necessary, the City will utilize spraying to control the population of adult mosquitoes. In these cases, the City uses the safest chemicals available in very low volumes and sprays only as needed.

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