1991年3月29日至30日，襄阳县法龙多杨集中学发生一起五氯酚钠污染饮水造成162人全部中毒的事故，经及时抢救，患者全部脱险。调查情况报道如下：流行病学及卫生学调查：3月29日晚饭后有少数同学自觉口干、面红、头痛等症状，但未引起注意，3月30日早餐后，相继出现类似症状的 From March 29 to March 30, 1991, an accident involving 162 people with poisoned drinking water caused by sodium pentachlorophenate occurred in Yangyang County Falong Duoyang Concentration School and was promptly rescued. All patients were out of danger. The investigation was reported as follows: Epidemiology and Hygiene Survey: After the dinner on March 29, a few students consciously began to dry their mouths, face redness, headache and other symptoms, but did not pay attention. On March 30, after breakfast, similar symptoms