There has been evidence of mosquito infection from West Nile virus (WNV) in Illinois every year since 2001. However, locations with higher WNV Minimum Infection Rates (MIR) change from year to year, varying with climatic conditions. The West Nile virus MIR Model is a multiple regression model that provides a predicted MIR estimate for State Climate Divisions and individual counties. View the data by county or climate division to see the actual MIR and the model-estimated MIR based on predictions from weather data. Underlying mosquito trap data and locations are available through the View Trap Map button; for access, please contact Rebecca Smith (rlsdvm@illinois.edu).

Model Details
The statistical multiple regression model is based on historical weekly measurements (EPI weeks 18-39) of MIR and weather data between 2005 and 2013. Model code and parameters are available in the download buttons. To read about the technical and scientific details, see the following papers:

• Ruiz et al. 2010 (doi: 10.1186/1756-3305-3-19)
• Shand et al. 2016 (doi: 10.1093/jme/tjw042)
• Karki et al. 2018 (doi: 10.1111/zph.12386)

Acknowledgements
The models have been developed by the University of Illinois Geographic Information Science and Spatial Epidemiology Lab (GISSA) in collaboration with the Wheaton Mosquito Abatement District, the Forest Preserve District of DuPage County, and the DuPage County Health Department, and the Midwestern Regional Climate Center. Funding has been provided by the Midwest Center of Excellence in Vector-Borne Disease and the Wheaton Mosquito Abatement District. Contact Rebecca L. Smith, Assistant Professor of Epidemiology (rlsdvm@illinois.edu), if you want more information.