流行性乙型脑炎(以下简称乙脑),在我县历年有普遍散发性流行,至1969年以前,发病率逐年增加。近年来,采取综合措施,收到初步效果。1972年开始,我县在都城、连滩、附城,平台四个公社进行试点乙脑预防接种,73、74年全面开展预防接种,发病率和死亡率有明显下降。为了探讨乙脑疫苗接种效果,我们初步搜集了近年有关资料分析如下。 Epidemic encephalitis (hereinafter referred to as JE), in my county over the years there is a widespread epidemic, until 1969, the incidence increased year by year. In recent years, comprehensive measures have been taken and preliminary results have been received. Since 1972, our county has conducted pilot JE vaccinations in four communes in Ducheng, Liantan, Fucheng and Platform, and vaccinations have been carried out in an all-round way in 73 and 74 years with a marked drop in the morbidity and mortality. In order to explore the effect of Japanese encephalitis vaccination, we initially collected the relevant information in recent years as follows.