2004年8月30日至10月15日浙江省象山县局部地区发生甲型肝炎(甲肝)暴发,疫情波及全县15个乡镇。现将调查结果报道如下。1．资料与方法:①疫情资料来源于传染病网络直报系统上报资料;甲肝病例个案资料由经过培训的调查员进行逐个访问调查;人口资料来自县公安局年底统计报表。②诊断标 From August 30 to October 15, 2004, an outbreak of hepatitis A (Hepatitis A) occurred in some areas in Xiangshan County, Zhejiang Province. The outbreak spread to 15 townships in the county. Now the survey results are reported below. 1. Data and Methods: The data of epidemic situation came from the reporting system of infectious diseases network direct reporting system. The case data of hepatitis A cases were investigated one by one by trained investigators. The population information was from the end of the county public security bureau statistical reports. ② diagnostic standard