Child level

Same level

Genera

Duck hepatitis virus 2 (DHV-2)  and DHV-2 are two of three small RNA viruses causing duck virus hepatitis, the other one being DHV-1.

Duck hepatitis virus 2 was reclassified as an astrovirus and renamed duck astrovirus 1 (DAstV-1) many years ago (Gough et al., 1984, 1985). No molecular sequence data has been published to confirm this placement, however, a partial polymerase sequence has been recently been determined and sequence comparisons indicate that DHV-2 is indeed an astrovirus (N.J. Knowles, M.J Carter and R.E Gough, unpublished data). Further, a partial polymerase sequence for DHV-3 (Haider and Calnek, 1979) was also determined and the sequence also shown to be that of an astrovirus, distinct from DAstV-1 (N.J. Knowles, M.J Carter and R.E Gough, unpublished data).

References

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.