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乙型病毒性肝炎主要是通过血液传染的(故旧称血清性肝炎)。乙型肝炎病毒(HBV)的传染性,是由完整的HBV(即Dane颗粒,以下简称D粒)所决定的。它包含HBsAg、HBcAg、HBeAg和DNA多聚酶(DNA—P)和决定HBV复制的基因组—DNA。HBsAg是HBV的外壳(如同鸡蛋外壳一样),本身不含核酸(DNA或RNA),不能自我复制,故严格地讲HBsAg是没有传染性
Hepatitis B virus is mainly transmitted by blood (so formerly known as serum hepatitis). Hepatitis B virus (HBV) is contagious, is determined by the complete HBV (ie Dane particles, hereinafter referred to as D tablets). It contains HBsAg, HBcAg, HBeAg and DNA polymerase (DNA-P) and genomic DNA that determines HBV replication. HBsAg is the outer shell of HBV (like an egg shell) and contains no nucleic acid (DNA or RNA) itself, so it can not self-replicate, so strictly speaking, HBsAg is not contagious