Venezuelan equine encephalitis (VEE) virus was first isolated in 1938 by Kubes and Rios (1) from the brain of a horse which died during an epizootic of a previously unrecognized disease in Venezuela. VEE-related viruses were subsequently isolated during t e period of 1943-1963 in Venezuela, Colombia, Peru, Trinidad, Brazil, Surinam, Argentina, Panama, Mexico, and the United States (2) Shope et . (3) fi rst defi ned the vi ru ses in the VEE comp 1 ex t-y showing serological relationships between classical VEE, lucambo, and Pixuna viruses. Young and Johnson (2) serologically characterized a...

Venezuelan equine encephalitis (VEE) virus was first isolated in 1938 by Kubes and Rios (1) from the brain of a horse which died during an epizootic of a previously unrecognized disease in Venezuela. VEE-related viruses were subsequently isolated during t e period of 1943-1963 in Venezuela, Colombia, Peru, Trinidad, Brazil, Surinam, Argentina, Panama, Mexico, and the United States (2) Shope et . (3) fi rst defi ned the vi ru ses in the VEE comp 1 ex t-y showing serological relationships between classical VEE, lucambo, and Pixuna viruses. Young and Johnson (2) serologically characterized a...