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甲型病毒性肝炎(甲肝)是由甲肝病毒引起的,以肝脏炎症和坏死病变为主的急性传染病,呈世界性分布。主要通过粪-口途径传播,临床表现为畏寒、发热、乏力、头痛、纳差、恶心、呕吐等急性感染或黄疸前期症状,肝大质偏软,丙氨酸氨基转移酶显著升高[1]。为了解陕西省延安市甲肝流行特征,为制定预防控制策略提供科学依据,对延安市1990-2012年甲肝流行病学特征分析如下。
Hepatitis A (Hepatitis A) is an acute infectious disease caused by Hepatitis A virus and is mainly characterized by inflammation and necrosis of the liver. It is globally distributed. Mainly through the fecal - oral route of transmission, the clinical manifestations of chills, fever, fatigue, headache, anorexia, nausea, vomiting and other acute infections or pre-jaundice symptoms, liver mass soft, alanine aminotransferase was significantly increased [ 1]. To understand the epidemiological characteristics of hepatitis A in Yan’an City of Shaanxi Province and provide a scientific basis for making prevention and control strategies, the epidemiological characteristics of hepatitis A in Yan’an from 1990 to 2012 are analyzed as follows.