Japanese encephalitis


Japanese encephalitis (JE), formerly known as Japanese B encephalitis to distinguish it from Economo's A encephalitis—is a disease caused by the mosquito-borne Japanese encephalitis virus (JEV).
The Japanese encephalitis virus (JEV) itself is a virus from the family Flaviviridae, part of the Japanese encephalitis serocomplex of 9 genetically and antigenically related viruses, some which are particularly severe in horses, and four known to infect humans including West Nile virus.