Japanese encephalitis means: Japanese Encephalitis is a mosquito-borne flavivirus infection which is the most common cause.
Viral encephalitis is a serious condition in Asia. The Japanese encephalitis virus can not be passed from one person to another. Japanese encephalitis virus can be transmitted from person-to-person only.
West Nile virus. Overt encephalitis can be caused by infection in 1 to 20 cases. A vaccine is also available. The risk to travelers from Asia who are not infected is very low, at less than one case per million.
(in Medical Dictionary)