Arboviral encephalitides have a
, but there are four main virus
agents of encephalitis in the United States:
eastern equine encephalitis (EEE),
western equine encephalitis (WEE),
St. Louis encephalitis (SLE)
and La Crosse (LAC) encephalitis,
all of which are transmitted by mosquitoes.
Venezuelan equine encephalitis (VEE) is an alphavirus and
causes encephalitis in horses and humans and is an important
veterinary and public health problem in Central and South
Japanese encephalitis (JE) virus related to St. Louis encephalitis ,
and is widespread throughout Asia.