First, this term is often used to describe both the viral subtype (A,B,C,D, etc) as well as drug resistance mutations in the HBV DNA polymerase gene.

• 首先,这个术语经常被用来描述病毒亚型(A,B,C,D等)以及HBV DNA多聚酶基因中出现的耐药性突变。