Abstract: Japanese encephalitis B is a virus disease which can cause encephalitis of humans and domestic animal by Flavivirus Japanese encephalitis virus (JEV) infected. All of human and many animals could be infected. The swine is the most important reservoir and sower. The diseases will cause reproductive disturbance of infected swine and the pig farm often suffered severe losses. So, the scientists attempted to find a faster and more accurate method to diagnose and detect JEV. This paper makes a brief summary of methods to detect JEV, such as isolation and identification of JEV, serological methods and methods in molecular biology.

Key words: Japanese encephalitis B; detection technology; progress