传染性肝炎是由肝炎病毒引起的急性传染病,一年四季均可发生,秋冬两季发病率较高,以学前儿童和青少年为多见,病程平均为一月左右。本病主要通过食品污染而传播,少数并可通过接种、输血等方式而传染。其临床特征以发热、消化道症状如厌食、(口恶)心等开始,少数从感冒症状 Infectious hepatitis is an acute infectious disease caused by hepatitis virus. It can occur throughout the year and has a high incidence in autumn and winter. Preschool children and adolescents are more common, and the average course is about January. The disease is mainly spread through food contamination, and a few can be infected through vaccination, blood transfusion, and other methods. Its clinical features start with fever, gastrointestinal symptoms such as anorexia, and (bad) heart, and a few are from cold symptoms.