Armour hepatitis acute period the patient that He Yalin bed affects, the virus inside its body is main the eduction of excrement and urine from the patient, through living to contact and be infected via the mouth daily.

• 甲型肝炎急性期和亚临床感染的病人，其体内病毒主要从患者的粪便排出，通过日常生活接触而经口传染。