目的了解平南县某中学发生的甲型肝炎暴发疫情的流行特征及流行因素,为今后防治甲肝提供依据。方法采用现场调查、采样检测及病例的流行病学个案调查。结果共发病92例,感染者104例,全部经实验室确诊,罹患率4.61%,总感染率9.83%,学校饮用井水经检验显示受到粪便污染。结论饮用水受污染是本次甲型肝炎暴发的主要因素,应加强寄宿学校的饮用水管理,杜绝此类事件的发生。 Objective To understand the epidemiological and epidemic factors of hepatitis A outbreak in a middle school in Pingnan County and to provide basis for future prevention and treatment of hepatitis A. Methods The field survey, sampling and epidemiological case investigation were used. Results A total of 92 cases of infection, 104 cases of infection, all confirmed by the laboratory, the attack rate of 4.61%, the total infection rate of 9.83%, school drinking well water after the test was contaminated by faeces. Conclusion The contamination of drinking water is the main factor in the outbreak of hepatitis A. We should strengthen the management of drinking water in boarding schools and put an end to such incidents.