Feare C J, Sanders M F, Blasco R, Bishop J D
Department of Pure and Applied Biology, University of Leeds, UK.
J R Soc Promot Health. 1999 Sep;119(3):146-55. doi: 10.1177/146642409911900303.
Canada goose droppings, collected in parks to which the public had access, were screened for a range of bacteria that could be pathogenic in man. Droppings of Canada geese, and other waterfowl, did contain such bacteria, including some that are well-known causes of illness in man. These bacteria, plus a species of Salmonella that was experimentally inoculated into droppings, were shown to survive and multiply in the droppings for up to one month after their deposition by geese. Canada geese ranged further from water than other waterfowl species and thus distributed their droppings over a larger area of park grassland. This more widespread distribution of their droppings leads Canada geese to pose a greater potential health risk than other waterfowl studied here, but variations in human responses to challenge with bacteria, and variations in human and waterfowl behaviour in public parks, renders quantification of this risk impossible.
在公众可进入的公园收集加拿大鹅的粪便，对一系列可能对人类致病的细菌进行筛查。加拿大鹅以及其他水禽的粪便中确实含有此类细菌，包括一些众所周知的人类致病源。这些细菌，再加上一种经实验接种到粪便中的沙门氏菌，在鹅排出粪便后，能在粪便中存活并繁殖长达一个月。与其他水禽物种相比，加拿大鹅远离水源的活动范围更广，因此它们的粪便散布在公园草地的更大区域。其粪便这种更广泛的分布使得加拿大鹅比此处研究的其他水禽构成更大的潜在健康风险，但是人类对细菌挑战的反应差异以及人类和水禽在公园中的行为差异，使得无法对这种风险进行量化。
