Migratory Birds and Spread of West Nile Virus in the Western Hemisphere
West Nile virus, an Old World flavivirus related to St.Louis encephalitis virus, was first recorded in the New World during August 1999 in the borough of Queens, New York City.Through October 1999, 62 patients, 7 of whom click here died, had confirmed infections with the virus.Ornithophilic mosquitoes are the principal vectors of West Nile virus in