2009年3—5月,潍坊市第一中学暴发出疹性疾病,共发现病人55例,病例主要集中在2年级19个班,发病36例,占总病例数的65.45%,罹患率17.65%。经流行病学调查及实验室检测,证实为一起风疹暴发,现将调查结果报告如下。1资料与方法1.1资料来源来自疫情报告和现场流行病学调查。学校及学 March-May 2009, Weifang First Middle School outbreak of rash disease, a total of 55 patients were found, the cases mainly concentrated in Grade 2 19 classes, the incidence of 36 cases, accounting for 65.45% of the total number of cases, the attack rate of 17.65% . The epidemiological survey and laboratory tests confirmed a rubella outbreak, the findings are reported below. 1 Materials and Methods 1.1 Sources of information from epidemiological reports and on-site epidemiological surveys. School and school