Objective To analysis the epidemiological characteristics of encephalitis B during 2003-2004 in Jieyung city and to discuss the prevention and control of encephalitis B.

• 目的分析2003-2004年揭阳市流行性乙型脑炎(乙脑)疫情发生的原因和流行的特征,探讨乙脑的防制措施。