However, the complete content is accessible to all Web browsers and devices. In Depth , Japanese Encephalitis Resources Japanese Encephalitis Disease Japanese encephalitis is the leading cause of viral encephalitis in Asia.
Infection is spread by infected mosquitoes.
The risk of infection is greatest in parts of Southern and Eastern Asia, the Indian subcontinent, and Southeastern Russian Federation. In all areas, the risk of infection is greatest in rural areas and changes with the season. An estimated 30,000 to 50,000 cases and 10,000 deaths occur each year, mostly among children. In endemic areas, the annual incidence of clinical disease ranges from 10-100 per 100,000 population. Children less than 15 years of age are principally affected.