This Web site from the Centers for Disease Control and Prevention examines the spread of West Nile virus across the United States, complete with up-to-date maps showing which states are hardest hit. The site also explores workplace safety, the biology behind the virus’ spread, and some fascinating history of West Nile, including the virus’ first identification in Uganda in 1937. It also offers helpful advice on what to do if you come across a dead bird.

Go to: http://www.cdc.gov/ncidod/dvbid/westnile/index.htm.

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