目的 为掌握平凉地区麻疹流行状况,指导麻疹控制工作,对平凉地区7县(市)1990～2001年麻疹发病进行流行病学分析。方法 收集、整理、分析法定传染病报告系统麻疹疫情资料、常规免疫报告资料和麻疹流行病学个案调查资料等探讨麻疹流行原因。结果 12年麻疹报告发病2127例,无死亡,年均报告发病率8.65/10万。1995年实现计免第3个85％目标后的“九五”期间麻疹发病率(9.41/10万)较“八五”期间(3.93/10万)上升139.44％,散发和暴发共存,局部暴发影响着发病强度。发病季节后移并延长,3～6月为发病高峰期,占57.76％。病例主要集中在7岁以下儿童,占71.27％,以散居儿童为主,占56.56％。有免疫史者占62.62％,初免和复种免疫质量低是造成麻疹发病较高的主要原因,也与实际接种率低有重要关系。结论 必须进一步加强计划免疫工作的领导,改进免疫服务态度,提高免疫质量和接种率,形成可靠的免疫屏障,控制麻疹发病。 Objective To understand the epidemic situation of measles in Pingliang area and to guide the control of measles. The epidemiological analysis of the incidence of measles in 7 counties (cities) in Pingliang region from 1990 to 2001 was conducted. Methods The epidemic reasons of measles were collected, collated and analyzed, including the measles outbreak information of the legal infectious disease reporting system, routine immunization reports and epidemiological survey data of measles. Results The incidence of measles in 12 years was 2127, with no death, with an average annual incidence of 8.65 / 100 000. The incidence of measles during the Ninth Five-year Plan period (9.41 / 100,000) after the realization of the third 85% reduction in 1995 was 139.44% higher than that during the “Eighth Five-Year Plan” (3.93 / 100,000), with the coexistence of sporadic outbreaks and local outbreaks Affect the severity of the disease. Seasonal onset and postponed and extended, 3 to June peak incidence, accounting for 57.76%. The cases mainly concentrated in children under 7 years old, accounting for 71.27%, with scattered children, accounting for 56.56%. 62.62% of them have immunization history, and the low quality of prime immunization and multiple immunization is the main reason for the higher incidence of measles, and also has an important relationship with the actual vaccination rate is low. Conclusion It is necessary to further strengthen the leadership of immunization program, improve the attitude of immunization services, improve the immunization quality and vaccination rate, form a reliable immune barrier and control the incidence of measles.