http://articles.mercola.com/sites/articles/archive/2003/06/14/pesticides-west-nile.aspxWest Nile Virus (WNV) has spread rapidly across the United States and Canada since its arrival in North America in 1999. It infects over 150 species of birds as well as mammals including squirrels, dogs, wolves, horses and mountain goats. Different typesenCommunityServer 2008.5 SP1 (Build: 31106.3070)