... 1937 (where it was first discovered in Uganda) the recognition of the West Nile Virus in the Western Hemisphere, in the summer of 1999, marked the first introduction in recent history of an Old World flavivirus into the New World (Peterson 2001). The West Nile Virus is a part of the Japanese encephalitis (JE) antigenic complex that includes 4 other viruses that cause ... ) infections (JE, St. Louis encephalitis, Murray Valley encephalitis, and Kunjin (a WNV subtype)) and it is interesting to note that these viruses are so closely related that they often require specialized tests to diffe...

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• Grade Level: Graduate