广元市自开展儿童计划免疫以来 ,麻疹发病率大幅度下降。但近年来麻疹发病又回升 ,并在部分地区出现爆发。为了解麻疹发病情况和流行规律 ,为制订麻疹控制策略提供依据 ,现将 1998～ 2 0 0 0年麻疹流行病学分析结果报告如下。1　资料和数据处理　疫情资料来自全市疫情报告系统 Guangyuan City since the launch of children’s immunization program, measles incidence dropped significantly. However, the incidence of measles has risen again in recent years and the outbreaks have occurred in some areas. In order to understand the incidence and prevalence of measles and provide a basis for formulating measles control strategies, the epidemiological analysis of measles from 1998 to 2000 is reported as follows. 1 data and data processing Outbreak information from the city’s epidemic reporting system