2007年攀枝花市某农村中学1起细菌性痢疾暴发调查

A Case-control Study of Bacillary Dysentery Outbreak among Rural Students

[目的]了解和掌握2007年9月8～14日发生在攀枝花市仁和区某农村中学(初中)1起细菌性痢疾暴发疫情的特点,搞清暴发原因,为采取有效控制措施提供依据。[方法]2007年9月15日,到该中学进行调查。[结果]这起暴发共发病58例,均为学生,554名学生的罹患率为10.47%;从10份病人大便(肛拭)检出3株宋内氏志贺菌。细菌性痢疾罹患率,住校生高于走读生,男生高于女生,9月5～8日饮生水者高于不饮生水者,饮自备水生水者高于饮生活用水生水者,饮生水次数多者高于次数少者,喝豆浆次数多者高于次数少者,喝冷豆浆者高于喝热豆浆者,洗碗用自备水者高于用生活用水者(P<0.01或<0.05)。[结论]这是使用被污染的自备水源引起的1起细菌性痢疾暴发疫情。

[Objective]To find out and grasp the features and causes of one bacillary dysentery outbreak in a rural junior high school in Renhe county,Panzhihua city from 8 to 14, September, 2007, provide basis for effective control measures. [Methods]Investigation was conducted in the school on 15, September, 2007.[Results]There were 58 cases who were all students. The attack rate of the all 554 students was 10.47 %, 3 strains Sh. sonnei were detected from 10 feces samples （the anus mop）. The morbidity of Bacillary Dysentery was higher among students boarding at school than the externs, male students was higher than female students, the rate was higher among students who had un-boiled water than the one who had boiled water from 5th to 8th,September, the rate was higher among students who had un- boiled well water than the one who had un-boiled tap water, the more times someone had un-boiled water, soybean milk the higher the rate, the rate of washing bowls with well water was higher than with the tap water（ P 〈0.01 or P 〈0.05）. [Conclusion]The outbreak was caused by contaminated well water in the school.