古蔺县箭竹乡于 2 0 0 3年 2月 2 4日～ 3月 31日发生一起经实验室血清学检测证实的麻疹爆发 ,发病 4 5例 ,罹患率 4 2 5 % ,无死亡病例。现将流行病学调查结果简报如下。1　疫情慨况　首例病人发生于 2 0 0 3年 2月 2 4日 ,女 ,7岁 ,箭竹乡小学一年级学生。病前 10d左右与邻? In Gulin Township, Gulin County, from February 2-4, 2003 to March 31, 2003, an outbreak of measles was confirmed by laboratory serological tests. Of the 45 cases, 45 cases were attacked with an attack rate of 425% without any deaths. Epidemiological findings are now briefed as follows. 1 Outbreak situation The first patient occurred on February 24, 2003, a female, 7 years old, and a first-year primary school in Jianzhu Township. About 10d before disease and neighbors?