Hepatitis B virus (HBV) belongs to the family Hepadnaviridae, members of which constitute 2 major extant genera: Orthohepadnavirus, which infect mammals, and Avihepadnavirus, which infect birds (7).
Approximately 78% of the reads aligned to existing avihepadnavirus sequences.
The Hepadnaviridae family is made up of genera Orthohepadnavirus and Avihepadnavirus.
33) While this technical problem can be dealt with, (33) there are several recent descriptions of avihepadnavirus genomic fossils.
The genus Avihepadnavirus contains 2 avian species: duck hepatitis B virus and heron hepatitis B virus (1).
8% identical to members of the Orthohepadnavirus and Avihepadnavirus genera, respectively.