在病毒性肝炎中,医学家对甲型、乙型肝炎的研究最为深入。甲型肝炎在潜伏末期和黄疸前期,粪便中已排出很多甲肝病毒,在潜伏末期至出现发热症状的10 天内排出的病毒最多,是传染性最强的时期,出现黄疸后,排出的病毒开始减少,黄疸出现后20天,不再排出病毒。黄疸的深浅,转氨酶的高低,与疾病的轻重程度 In viral hepatitis, medical research on hepatitis A and B is the most intensive. Hepatitis A During the last phase of latent period and jaundice, a lot of hepatitis A virus has been excreted in the excrement, and most of the virus is excreted in the last 10 days from the end of latent period until the symptom of fever appears. After the onset of jaundice, the discharged virus begins to decrease Twenty days after the onset of jaundice, the virus is no longer excreted. The depth of jaundice, the level of aminotransferases, and the severity of the disease