Wobeser G
J Wildl Dis. 1987 Jul;23(3):368-75. doi: 10.7589/0090-3558-23.3.368.
Ten adult blue-winged teal (Anas discors) and six Canada goose (Branta canadensis) goslings were inoculated with liver tissue from a natural case of duck plague in a wild mallard (Anas platyrhynchos). Four additional teal were placed in contact with the inoculated ducks. Inoculated teal died 63.5-68 hr after inoculation; two of the contact teal died 161-162 hr after exposure. Three of the goslings died 119-133 hr after inoculation, the others were killed when moribund 90-133 hr postinfection. The clinical course of disease was extremely rapid in both species. Signs were limited to sudden onset of profound weakness, ataxia, tremors and terminal convulsions. The only consistent gross lesion in the teal was a small dark spleen; half the teal also had inconspicuous foci of epithelial necrosis in the distal esophagus and in the cloaca. Goslings had more severe lesions, with focal hepatic necrosis visible in all, and mucosal necrosis over the intestinal lymphoid tissue, and intestinal hemorrhage in three birds each. Microscopic lesions in both species were similar to those reported in mallards. Duck plague might be overlooked at necropsy of blue-winged teal, because of the paucity of gross lesions.
将10只成年蓝翅鸭（绿翅鸭）和6只加拿大鹅雏鹅接种了来自一只野生绿头鸭自然感染鸭瘟病例的肝脏组织。另外4只蓝翅鸭与接种的鸭子接触。接种的蓝翅鸭在接种后63.5 - 68小时死亡；2只接触的蓝翅鸭在接触后161 - 162小时死亡。3只雏鹅在接种后119 - 133小时死亡，其他雏鹅在感染后90 - 133小时濒死时被处死。两个物种的疾病临床病程都极快。症状仅限于突然出现的极度虚弱、共济失调、震颤和末期惊厥。蓝翅鸭唯一一致的大体病变是脾脏小且颜色深；一半的蓝翅鸭在远端食管和泄殖腔还有不明显的上皮坏死灶。雏鹅的病变更严重，所有雏鹅都可见局灶性肝坏死，三只雏鹅的肠道淋巴组织有黏膜坏死，三只雏鹅有肠道出血。两个物种的微观病变与绿头鸭中报道的相似。由于大体病变较少，在对蓝翅鸭进行尸检时可能会忽略鸭瘟。
