West Nile Virus Surveillance Reports
The best way to prevent WNV disease or any other mosquito-borne illness is to reduce the number of mosquitoes around your home and to take personal precautions to avoid mosquito bites. Precautions include:
- Avoid being outdoors when mosquitoes are most active, especially between dusk and dawn.
- When outdoors, wear shoes and socks, long pants and a long-sleeved shirt, and apply insect repellent that includes DEET, picaridin, oil of lemon eucalyptus or IR 3535 according to label instructions. Consult a physician before using repellents on infants.
- Make sure doors and windows have tight-fitting screens. Repair or replace screens that have tears or other openings. Try to keep doors and windows shut, especially at night.
- Eliminate all sources of standing water that can support mosquito breeding, including water in bird baths, ponds, flowerpots, wading pools, old tires and any other receptacles. In communities where there are organized mosquito control programs, contact your municipal government to report areas of stagnant water in roadside ditches, flooded yards and similar locations that may produce mosquitoes.
West Nile Virus 2022 Weekly Reports
West Nile Virus 2021 Weekly Reports
West Nile Virus 2020 Weekly Reports
West Nile Virus 2019 Weekly Reports
West Nile Virus 2018 Weekly Reports
West Nile Virus 2017 Weekly Reports
West Nile Virus 2016 Weekly Reports
West Nile Virus 2015 Weekly Reports
West Nile Virus 2014 Weekly Reports
West Nile Virus 2013 Weekly Reports
West Nile Virus 2012 Weekly Reports
- City of Chicago: CDPH West Nile Virus Homepage
- Illinois: Illinois Data