Japanese encephalitis virus disease. *St. Louis encephalitis. *Tick-borne encephalitis. *West Nile fever ... Arthropod-borne viral encephalitis, vector unknown*California encephalitis virus infection neuroinvasive disease ... Viral encephalitis*Acute hemorrhagic encephalitis*Acute hemorrhagic leukoencephalitis. *COVID-19-Associated Acute Hemorrhagic ...