65名学生发热事件调查分析

An Investigation Analysis on Fever Incidents of 65 Students

目的 调查2 0 0 3年5月宁波市江东区某小学发生多人发热事件及其发生原因。判断是否为SARS病例。方法 对该小学4 89名小学生和周边2所小学1380名学生采用统一方法进行流行病学调查,结合实验室和X线检查。结果 本次调查共发现6 5名发热小学生,白细胞计数大多正常,淋巴细胞百分率增加,X线检查显示3名学生肺部有模糊阴影,其余学生均两肺清晰无异常,病人分布有一定的聚集性。经过2d的集中医学观察,除2名留观学生体温在37 4℃(1名为上呼吸道感染、1名为扁桃体炎) ,其他学生体温均在37℃以下症状,白细胞计数、x线检查均正常。结论 发热病例不符合SARS诊断标准,考虑本次发病为多种原因引起的。

Objective This analysis was to investigate events of fever and possible reasons among a number of students in a certain primary school in Jiangdong District of Ningbo city in May of 2003 and judge whether they were SARS. Methods Epidemiological investigation using a uniform methods on 489 students of this school and 1 380 students from 2 neighboring primary schools was conducted in combination with lab inspection and X-ray examination. Results During this investigation, 65 students with fever were found, most of which showed a normal leukocyte count and an increased rate of lymphocytes. X-ray inspection showed that 3 students had faint shades, while other students displayed clear lungs with no abnormalities. The distribution of patients took on a certain congregating feature. After a 2 day intensive observation, the body temperatures of all students were below 37 ℃ except two students whose body temperatures were 37.4℃ (one was upper respiratory infection and the other was tonsillitis); the leukocyte count and X-ray inspection results were both normal. Conclusion The fever cases are not in accord with SARS diagnostic standard, and considering that this incident is caused by multiple reasons, it is most likely temporary fever induced by common viral infection.