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We provide independent, nonpartisan research and recommendations that help state and local policymakers improve our governments' sustainability, efficiency and effectiveness and inform the media and the public on critical issues facing our region. Our focus areas include government finance, criminal justice policy, mass transit governance and more.

March 25, 2025

Cook County Mosquito Abatement Districts: Governance, Transparency, and Finances

Mosquito abatement districts (MAD) in Illinois utilize integrated pest management strategies to control mosquito populations and prevent diseases from mosquito-borne viruses such as malaria, yellow fever, dengue, filariasis, encephalitis, and West Nile virus.

Mosquito abatement services can be delivered by special district governments, municipal or county public health programs, public works programs, or through contracts with private companies. In parts of Cook County, four mosquito abatement districts deliver these services: the Northshore, Desplaines Valley, Northwest, and South Cook County Mosquito districts.

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