D型肝炎病毒(HDV)以前称为(?)因子,是一种缺陷病毒,仅在乙型肝炎病毒(HBV)的存在下才可复制。经常受HBV感染的非肠道药物滥用者对HDV感染有高度危险性,并可将此病毒传播至非流行地区。在HDV感染期间,患者先出现D型肝炎抗原(HDAg),但很快即有D型肝炎病毒抗体(抗-HDV)出现,此抗体持续时间同HBsAg。因此认为,抗HDV是HDV感染进展的标记。 Hepatitis D virus (HDV), formerly known as (?) Factor, is a defective virus that replicates only in the presence of Hepatitis B virus (HBV). People with parenteral abuse who are often infected with HBV are at high risk for HDV infection and can spread the virus to non-endemic areas. During the HDV infection, the patient first developed hepatitis D antigen (HDAg), but the hepatitis D virus antibody (anti-HDV) appeared soon enough, and the duration of this antibody was the same as that of HBsAg. Therefore, it is considered that anti-HDV is a marker of the progress of HDV infection.