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Viraemia during the acute phase of EEE and WEE. Incubation period of 1-3weeks after experimental infection with EEE or WEE. Incubtion often shorter with EEE. Central nervous system (CNS) replication within a week
Viraemia during the acute phase of EEE and WEE. Incubation period of 1-3weeks after experimental infection with EEE or WEE. Incubtion often shorter with EEE. Central nervous system (CNS) replication within a week
====Aetiology====
Infection with any of the following viruses can cause CNS disease in horses:
Family Rhabdoviridae, Genus ''Lyssavirus''
*Rabies Virus
Family Flaviviridae, Genus ''Flavivirus''
*Japanese Encephalitis Virus
*West Nile Virus (WNV)
*Kunjin virus
*Murray Valley Fever Virus
Family Togaviridae, Genus ''Alphavirus''
*Eastern Equine Encephalitis Virus (EEV)
*Western EEV
*Venezuelan EEV
Family Bunyaviridae, Genus ''Orthobunyavirus''
*California Encephalitis viruses
**Snowshoe Hare Virus
**Jamestown Canyon Virus
*Main Drain Virus
====Epidemiology====
====Epidemiology====
*Bacterial meningoencephalitis
*Bacterial meningoencephalitis
*Equine protozoal myoencephalopathy (EPM)
*Equine protozoal myoencephalopathy (EPM)
*Verminous encephalitis
*Verminous encephalomyelitis
*West Nile Virus (WNV) infection
*West Nile Virus (WNV) infection
*Toxicosis
*Toxicosis