Nielsen B B, Clausen B, Elvestad K
Nord Vet Med. 1981 Sep-Nov;33(9-11):427-33.
In a 6 year examination (1975-80) of 3036 game mammals and 3004 game birds from Denmark, and of 684 warm-blooded animals of foreign origin, Salmonella was found in 0.2% of Danish mammals, 0.8% of danish game birds, and 0.1% of the animals of foreign origin. Furthermore, Salmonella was isolated from 16% of 605 mute swans which died from starvation during the winter 1978-79, and from 2.4% of 296 faeces samples from hooded crows. Even though the occurrence of Salmonella among Danish cattle has been increasing during recent years, this does not seem to be the case among game, mallards excepted. Mallards raised in breeding units are often treated with antibiotics as a routine; in this way the mortality due to Salmonella is reduced, but some birds will still carry Salmonella bacteria when released. The high salmonella frequency among the mute swans that died during the winter of 1978-79 was probably a result of large numbers of birds gathering in harbours or in small stretches of open water near sew outlets.
在对丹麦的3036只野生哺乳动物、3004只野生鸟类以及684只外来温血动物进行的为期6年（1975 - 1980年）的检测中，沙门氏菌在0.2%的丹麦哺乳动物、0.8%的丹麦野生鸟类以及0.1%的外来动物中被发现。此外，在1978 - 1979年冬季因饥饿死亡的605只疣鼻天鹅中，16%被分离出沙门氏菌，在296份寒鸦粪便样本中，2.4%被分离出沙门氏菌。尽管近年来丹麦牛群中沙门氏菌的发生率一直在上升，但除野鸭外，在野生动物中似乎并非如此。饲养单位饲养的野鸭通常会按常规用抗生素治疗；这样可降低因沙门氏菌导致的死亡率，但一些野鸭放归后仍会携带沙门氏菌。1978 - 1979年冬季死亡的疣鼻天鹅中沙门氏菌的高检出率可能是由于大量鸟类聚集在港口或靠近污水排放口的小片开阔水域。
