- equine encephalitis
Pathol., Vet. Pathol.a viral disease of horses and mules that is communicable to humans, marked by inflammation of the brain and spinal cord.
* * *also called Equine Encephalomyelitis,severe viral disease of horses and mules. It sometimes affects birds, reptiles, and humans.Of the several strains of the virus, the most prevalent are the A group, which includes the Eastern, Western, and Venezuelan strains, and the B group, which includes the Japanese and St. Louis strains. The virulent Western type has a mortality as high as 90 percent in horses and 10 percent in humans.Immunity lasting one year is conferred by recovery from the disease or by vaccination with killed vaccine. Birds appear to harbour the disease but do not exhibit any definite symptoms. The mosquito transmits the virus from birds to horses, mules, or humans. Other animals may be infected in the same way but not show symptoms. Sheep and cats appear to be resistant.Symptoms in horses include disturbances in equilibrium, high fever, incoordination, and paralysis; those in humans include headache, drowsiness, sweating, and mental confusion. Because of the symptoms the disease is often mistakenly called sleeping sickness. Treatment is aimed at making the victim comfortable. The disease can cause permanent brain damage. Control centres on eradication of mosquito carriers and the use of vaccines against the Eastern and Western strains.
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Equine Encephalitis — may be caused by several viruses:* Eastern equine encephalitis virus * Western equine encephalitis virus * Venezuelan equine encephalitis virus … Wikipedia
equine encephalitis — n EQUINE ENCEPHALOMYELITIS * * * 1. equine encephalomyelitis. 2. Borna disease … Medical dictionary
equine encephalitis — noun encephalitis caused by a virus that is transmitted by a mosquito from an infected horse • Syn: ↑equine encephalomyelitis • Hypernyms: ↑encephalitis, ↑cephalitis, ↑phrenitis … Useful english dictionary
equine encephalitis — noun Date: 1946 any of three forms of encephalitis that attack chiefly equines and humans in various parts of North and South America and are caused by three related single stranded RNA viruses (genus Alphavirus of the family Togaviridae) … New Collegiate Dictionary
equine encephalitis viruses — equine encephalomyelitis viruses a group of togavirus species of the genus Alphavirus, each named for the type of encephalomyelitis it causes in horses, other equines, and humans; birds serve as a reservoir and transmission is by mosquitoes. The… … Medical dictionary
Venezuelan equine encephalitis virus — Virus classification Group: Group IV ((+)ssRNA) Family … Wikipedia
Eastern equine encephalitis virus — Taxobox | color=violet name = Eastern equine encephalomyelitis caption = colourised TEM micrograph of a mosquito salivary gland. The red dots are coloured red. (83,900x magnification) virus group = iv familia = Togaviridae genus = Alphavirus… … Wikipedia
Western equine encephalitis virus — Taxobox virus group = iv familia = Togaviridae genus = Alphavirus The Western equine encephalitis virus is the causative agent of relatively uncommon viral disease Western equine encephalitis (WEE). An Alphavirus of the family Togaviridae, the… … Wikipedia
Venezuelan equine encephalitis — Venezuelan equine encephalitis, a form of equine encephalitis that occurs principally in the region of northern South America; mad plague … Useful english dictionary
Venezuelan equine encephalitis — Ven·e·zu·e·lan equine encephalitis .ven əz( ə) wā lən n EQUINE ENCEPHALOMYELITIS (c) * * * see under encephalomyelitis … Medical dictionary