American Mosquito Control Association (AMCA); West Nile Virus:

http://www.mosquito.org/mosquito-information/virus.aspx

Animal & Plant Health Inspection Service (APHIS); Equine West Nile Virus:

http://www.aphis.usda.gov/vs/nahss/equine/wnv/

Benton-Franklin Health Department:

http://www.bfhd.wa.gov/wnv/

Centers for Disease Control West Nile Virus Home Page:

http://www.cdc.gov/ncidod/dvbid/westnile/

Idaho Department of Health and Welfare; West Nile Virus:

http://www.healthandwelfare.idaho.gov/site/4278/default.aspx

Oregon State Department of Human Services; West Nile virus:

http://oregon.gov/DHS/ph/acd/diseases/wnile/wnile.shtml

U.S. Geological Survey; West Nile Virus:

http://diseasemaps.usgs.gov/wnv_us_human.html

Washington State Department of Health; West Nile virus Home Page:

http://www.doh.wa.gov/ehp/ts/Zoo/WNV/WNV.html