Japanese Encephalitis in Korea, 2010: Case Reports and Epidemiology

Japanese encephalitis has been the leading cause of epidemic viral encephalitis in Korea. In 2010, 26 patients with Japanese encephalitis were documented in Korea. Patients older than 50 years accounted for 54% of this cohort, and none of the patients was younger than 10 years. The number of documented cases of Japanese encephalitis increased markedly in 2010 compared to the annual reported cases during the previous 10 years.