Japanese encephalitis

noun

variants also Japanese B encephalitis

ˌjap-ə-ˌnēz-ˈbē- 

: an encephalitis that occurs epidemically in Japan and other Asian countries in the summer, is caused by a flavivirus (Orthoflavivirus japonicum) transmitted by mosquitoes (especially Culex tritaeniorhynchus), and usually produces a subclinical infection but may cause acute meningoencephalomyelitis compare saint louis encephalitis