Duck hepatitis virus II (DHV-II)
and DHV-III are two of three small RNA viruses causing
duck virus hepatitis, the other one being
reclassified as an astrovirus and renamed duck astrovirus 1
(DAstV-1) many years ago (Gough et al., 1984, 1985). DHV-III
was first characterised by Haider and Calnek (1979).
Recent partial polymerase
sequences of DHV-II (DAstV-1) and DHV-III
have been determined show that they are both astroviruses and that
DHV-III is distinct from DAstV-1 (Todd et al., 2009).
Gough, R.E., Collins, M.S.,
Borland, E. and Keymer, L.F. (1984). Astrovirus-like particles
associated with hepatitis in ducklings. Vet Rec. 114: 279.
Gough, R.E., Borland, E.D., Keymer,
I.F. and Stuart, J.C. (1985). An outbreak of duck hepatitis type II
in commercial ducks. Avian Pathology 14: 227-236.
Haider, S.A, and Calnek, B.W. (1979). In vitro
isolation, propagation, and characterization of duck hepatitis virus
type III. Avian Dis. 23: 715-729.
Todd, D., Smyth, V.J., Ball, N.W., Donnelly,
B.M., Wylie, M., Knowles, N.J. and Adair, B.M. (2009). Identification of
chicken enterovirus-like viruses, duck hepatitis virus (DHV) type 2
and DHV type 3 as astroviruses. Avian Pathology 38: 21-29.