自我市1978年开始合理有计划地使用麻疹疫苗以来,麻疹发病率有较大幅度下降。但今年1—4月份出现了麻疹局部小流行,发病率有明显上升的现象。为降低麻疹发病率、控制以至消灭麻疹提供科学依据,于1985年4—5月份兰州生物制品所在我市进行麻苗再免,即对我市部分0—20岁以上人群采血做麻疹血凝抑制试验。现将结果报告如下: Since the beginning of a reasonable and systematic use of measles vaccine in our city in 1978, the incidence of measles has dropped substantially. However, from January to April this year, there was a local outbreak of measles with a marked increase in the incidence. In order to reduce the incidence of measles, control and even eliminate measles to provide a scientific basis, from April to May 1985, Lanzhou biological products in the city to re-exempt from Ma Miao, that is, some people in our city 0-20 years old blood to do measles blood clotting inhibition test. The results reported below: