http://www.at-healthy.com/west-nile/west-nile-info http://www.at-healthy.com/west-nile/west-nile-info Where did it come from The West Nile virus was first isolated in 1937 in the West Nile district of Uganda The disease has spread through many parts of Europe and Asia as well as North and South America How did it spread We do not know exactly how the virus http://www.at-healthy.com/west-nile/west-nile-info/west-nile-mosquito-81.htm