japanese encephalitis virus

Japanese encephalitis JE virus is the leading cause of vaccine-preventable encephalitis in Asia and the western Pacific. Japanese encephalitis virus JEV is the most important cause of viral encephalitis in Asia.

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The virus is genetically related to the Japanese encephalitis family of viruses.

. For most travelers to Asia the risk for JE is very low but varies based on destination length of travel season and activities. Usually it begins with flu-like symptoms followed by neurological deterioration which may include personality and behavioural changes seizures weakness and difficulties in communication. The virus is found in pigs and birds and is passed to mosquitoes when they bite infected animals.

Herpes simplex encephalitis is a type of infectious encephalitis which happens when herpes simplex virus HSV enters the brain. Identification of the human disease was first made in 1937 in Uganda and in the latter half of the 20th century spread to many other parts of the world. Its most common in rural areas in southeast Asia the Pacific islands and the Far East but is very rare in travellers.

Japanese encephalitis virus is part of the flavivirus family closely related to West Nile Zika Murray Valley encephalitis dengue and yellow fever. Japanese encephalitis is a viral brain infection thats spread through mosquito bites. Humans and horses both exhibit disease symptoms from the virus and symptoms rarely occur in other animals.

It cannot be spread from person to person. According to NSW Health Japanese encephalitis virus has been detected in samples from commercial pig farms at five locations. The first case of Japanese encephalitis viral disease JE was documented in 1871 in Japan.

It is a mosquito-borne flavivirus and belongs to the same genus as dengue yellow fever and West Nile viruses.

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