Here are some tracking maps for West Nile if anyone is interested
http://diseasemaps.usgs.gov/wnv_us_veterinary.html
http://www.aphis.usda.gov/vs/nahss/equine/....htmln_maps.htm
http://diseasemaps.usgs.gov/wnv_us_veterinary.html
http://www.aphis.usda.gov/vs/nahss/equine/....htmln_maps.htm