1982年5月～1983年4月我县三所小学分别发生了风疹的爆发流行。总发病率为25.52%,班级发病率5.00%～65.22%。三所小学发病率分别为32.59%、28.29%、6.03%,男女学生无差异。发病年龄6～14岁,发病率以6～9岁为高,分别是40.00%、45.56%、51.38%、44.35%,以后随年龄上升而下降,老师均未发病。三所小学流行的时间均为3～5月,持续时间46～54天。密切接触为其传播特点,对10例患儿的双份血清进行了血清学调查,发现6例风疹抗体 From May 1982 to April 1983, three outbreaks of rubella occurred in three primary schools in our county respectively. The total incidence was 25.52%, the incidence of classes 5.00% ~ 65.22%. The incidence of three primary schools were 32.59%, 28.29% and 6.03% respectively, with no difference between male and female students. The incidence of 6 to 14 years old, the incidence of 6 to 9 years old were high, respectively, 40.00%, 45.56%, 51.38%, 44.35%, later decreased with age, the teacher had no disease. The prevalence of three primary schools are from March to May, the duration of 46 to 54 days. Close contact with the characteristics of its transmission, 10 cases of children with double serum serological survey found that 6 cases of rubella antibody