Investigation of Japanese Encephalitis Confirmed Cases in South Taiwan, 2010

Ya-Lin Liu1, Chin-Shyan Wang1, Tsung-Wen Kuo2, Sheng-Tang Wei3, Yi-Chun Wu4

2011 Vol.27 NO.15

Correspondence Author: Ya-Lin Liu


In 2010, there were 8 Japanese encephalitis confirmed cases in south Taiwan (Yunlin County, Chiayi County/City, and Tainan County/City), with the first case occurring in late May and the remaining 7 cases occurring in June. Compared to the last 3 years, the prevalence of Japanese encephalitis in south Taiwan in 2010 was higher than the prevalence threshold of the same periods of the other years. With the purpose of serving as a reference for future investigations, this report documents the processes used and experiences gained from conducting an epidemic investigation of Japanese encephalitis in 2010. Confirmed cases and possible infection sources were investigatd; additionally, possible environmental risk factors for Japanese encephalitis cases were tallied, and the results showed that gutters and pigeon sheds were the most commonplace factors. Additionally, this report provided recommendations on prevention measures, such as thorough methodology of epidemic and environmental investigation, vaccination, health education and promotion, health monitoring, disease surveillance, visits to medical care institutions, and hanging mosquito lamp.