equine encephalitis
noun
variants
or less commonly equine encephalomyelitis
: any of three viral diseases chiefly of equines and humans in various parts of North and South America that are transmitted especially by mosquitoes, are characterized in humans by flu-like symptoms which often progress to encephalitis and sometimes to coma and death, and are caused by three togaviruses (genus Alphavirus)
a
: one (Alphavirus eastern) that occurs in the eastern U.S. and Canada
called also eastern equine encephalitis, eastern equine encephalomyelitis, triple E
b
: one (Alphavirus western) that occurs in the western U.S. and Canada
called also western equine encephalitis, western equine encephalomyelitis
c
: one (Alphavirus venezuelan) that occurs from northern South America to Mexico
called also Venezuelan equine encephalitis, Venezuelan equine encephalomyelitis
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Merriam-Webster unabridged




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