Figure 5From: Landscape, demographic, entomological, and climatic associations with human disease incidence of West Nile virus in the state of Iowa, USACensus block groups with and without WNV disease overlain on Iowa 2002 land cover. The census block groups with WNV disease are highlighted with a darker outline. The land cover dataset was produced by the Iowa Department of Natural Resources and metadata can be found at [43].Back to article page