Definition: A genus of HEPADNAVIRIDAE infecting birds but rarely causing clinical problems. Transmission is predominantly vertical. HEPATITIS B VIRUS, DUCK is the type species.
from AVIan HEPAtotropic DNA virus; a genus of the family Hepadnaviridae infecting birds; infection: coord IM with HEPADNAVIRIDAE INFECTIONS (IM)
ExamplesHepatitis B Virus, Duck