Japanese b encephalitis virus

What is Japanese b encephalitis virus?

Japanese b encephalitis virus definition and meaning on Dictionary terms:
a small beetle, Popillia japonica, of the scarab family, introduced into the eastern U.S. from Japan, the adult of which feeds on the foliage of fruit and other trees, and the larva of which feeds on plant roots.


reference: https://www.dictionary.com/browse/japanese-b-encephalitis-virus