甲型病毒性肝炎（以下简称甲肝）50％～70％发生在15岁以下的儿童，中小学生是甲肝的易感人群间为了解我县城区中小学生甲肝免疫水平．在各有关学校的支持配合下．对城区部分学校学生进行甲肝抗体IgG测定。1对象与方法对象为龙游城区的西门小学、桥下小学、实验小学、龙游中学 Hepatitis A virus (hereinafter referred to as hepatitis A) 50% to 70% occurred in children under 15 years of age, primary and secondary health care among patients with hepatitis A hepatitis A level in order to understand the city primary and secondary school students. With the support of all relevant schools. Hepatitis B antibody IgG was measured in some school students in urban area. 1 objects and methods for the Longtou City Simon primary school, primary and secondary schools under the bridge, Experimental Primary School, Longyou Middle School