2010年3月5日下午1点多,我中心接到县某小学的报告,称有学生误食不明物质引起不良反应,已经送当地医院就诊。我中心迅速派出公共卫生应急人员了解情况,进行现场处置,并采集了10多包包装完好的样品回单位进行实验室检测,以查清该不明物质,以利于医院的后续治疗工作。1流行病学调 More than 1:00 PM on March 5, 2010, our center received a report from a primary school in Xian that there were adverse reactions caused by students’ unidentified substances and had been sent to a local hospital for treatment. My center quickly dispatched public health emergency personnel to understand the situation, conduct on-site disposal, and collected more than 10 bags of well-packaged samples back to the unit for laboratory testing to identify the unknown substances in order to facilitate the hospital’s follow-up treatment. Epidemiological survey