Kao R R, Roberts M G
AgResearch, Wallaceville Animal Research Centre, Upper Hutt, New Zealand.
Epidemiol Infect. 1999 Jun;122(3):505-19. doi: 10.1017/s0950268899002472.
The Australian brushtail possum is the major source of infection for new cases of bovine tuberculosis in cattle in New Zealand. Using hypothetical values for the cost of putative cattle and possum Tb vaccines, the relative efforts required to eradicate Tb in cattle using possum culling, possum vaccination or cattle vaccination are compared. For realistic assumed costs for 1080 poison bait, possum culling is found to be a cost-effective strategy compared to cattle vaccination if the required control area is below 13 ha per cattle herd, while possum vaccination is cost-effective for control areas of less than 3 ha per herd. Examination of other considerations such as the possible roles of possum migration and heterogeneities in possum population density suggest that each control strategy may be superior under different field conditions. Finally, the roles of the possum in New Zealand, and the Eurasian badger in Great Britain and Ireland in the transmission of bovine tuberculosis to cattle are compared.
澳大利亚帚尾袋貂是新西兰牛群中新增牛结核病病例的主要传染源。利用假定的牛和袋貂结核病疫苗成本的假设值，比较了通过捕杀袋貂、给袋貂接种疫苗或给牛接种疫苗来根除牛结核病所需的相对努力。对于1080毒饵的实际假定成本，如果每个牛群所需的控制面积低于13公顷，与给牛接种疫苗相比，捕杀袋貂被发现是一种具有成本效益的策略，而对于每个牛群控制面积小于3公顷的情况，给袋貂接种疫苗具有成本效益。对袋貂迁移和袋貂种群密度异质性等其他因素的研究表明，每种控制策略在不同的野外条件下可能更具优势。最后，比较了袋貂在新西兰以及欧亚獾在英国和爱尔兰将牛结核病传播给牛群过程中的作用。
