Table 2. Gross pathology caused by duck hepatitis a virus in backyard waterfowl.
| Host | No. of samples | Hepatitis a) | Pancreatitis b) |
|---|---|---|---|
| Muscovy duck | 19 | 5 (8.6%) | 14 (24.1%) |
| Mule duck | 16 | 7 (12.1%) | 9 (15.5%) |
| Cherry Valley duck | 6 | 6 (10.3%) | 0 (0%) |
| Sheldrake | 14 | 14 (24.1%) | 0 (0%) |
| Goose | 3 | 3 (5.2%) | 0 (0%) |
| Total | 58 | 35 (60.3%) | 23 (39.7%) |
a) Liver enlargement or bleeding, b) Pancreatic yellowing or hemorrhage.