自1967年麻疹减毒活疫苗(简称麻苗)广泛使用以来,我省麻疹的发病率和死亡率大幅度下降,大规模的流行得到控制。但是在麻疹的防治上,由于计划免疫工作没有很好开展,易感者未能有效地接受麻苗接种,以致个别地区出现局灶性流行或散在发生。门源县北山公社接受1973年麻疹流行的深刻教训,从1974年起逐年对婴幼儿进行麻苗接种,迄今8年未发现一例麻疹患者。在1981年全省计划免疫经验交流会上,被评为先进单位。为了考核该公社麻苗的接种效果,我们于1981年10月作了实地调查,对409名8个月～13岁儿童的麻疹接种史进行了核对,并以微量采血检测了麻疹抗体水平。现将调查果结报告如下。调查方法流行病学调查:北山公社居县城近郊,以农为主,有7个自然村、6个生产队、15051人。1981年建立予防接种卡片的7岁以下儿童共1221名。这次调查对象是按照自然村布局、人口比例以户为单元进行抽 Since the widespread use of attenuated live measles vaccine in 1967 (referred to as flax seedlings), the incidence and mortality of measles in our province have dropped dramatically and the epidemic on a large scale has been brought under control. However, in the prevention and treatment of measles, since the planned immunization work was not carried out well, susceptible persons failed to effectively receive measles vaccine, resulting in focal epidemics or scattered occurrences in some areas. The Beishan commune of Menyuan County accepted the profound lesson learned from the popularization of measles in 1973 that the vaccination of infants and young children from year to year has been conducted year after year since 1974 and no measles patient has been found in 8 years. In 1981 the province plan immunization experience exchange meeting, was rated as advanced unit. In order to assess the vaccination effect of the commune’s flaxseed, we conducted a field survey in October 1981 to check the history of measles vaccination among 409 children aged 8 months to 13 years. Measles antibody levels were also detected by micro-bleedings. The fruitful report of the investigation is as follows. Survey Methods Epidemiological survey: Beishan commune Habitat home suburbs, mainly in agriculture, there are 7 villages, 6 production teams, 15051 people. In 1981, 1221 children under the age of 7 were established to prevent vaccination cards. The survey is conducted in accordance with the layout of natural villages, population proportion of households as a unit of pumping