Etosha National Park (ENP) is located in Namibia, where an annual anthrax outbreak (caused by Bacillus anthracis) occurs among grazing animals such as zebras. This increases the number of carcasses in ENP, allowing for scavengers such as jackals to feed off these carcasses. Carcasses provide a location of conspecific interaction between jackals and may be a means of disease transmission among the jackals. We are interested in studying how a disease in the zebra population may help to propagate a different disease (rabies) in the jackal population since the carcasses are providing a location of interaction between the jackals. We aim to answer the following research question: how do anthrax and rabies affect each other’s ability to spread? Standard qualitative analysis techniques distinguished outcomes (stable equilibria) using reproduction numbers as threshold quantities. We found that rabies helps anthrax, and a little anthrax helps rabies invade, but a lot of anthrax prevents rabies by reducing the jackal population through its food source.

埃托沙国家公园（ENP）位于纳米比亚，那里每年都有炭疽热暴发（由炭疽杆菌引起））发生在诸如斑马之类的放牧动物中。这增加了ENP中的car体数量，允许诸如jack狼等清道夫从这些car体中觅食。体在jack间提供特定相互作用的位置，并且可能是the间疾病传播的一种方式。我们感兴趣的是研究斑马种群中的疾病如何有助于在jack狼种群中传播不同的疾病（狂犬病），因为the体在providing狼之间提供了相互作用的位置。我们旨在回答以下研究问题：炭疽和狂犬病如何影响彼此的传播能力？标准的定性分析技术使用繁殖数量作为阈值数量来区分结果（稳定的平衡）。我们发现狂犬病有助于炭疽病，一点炭疽病有助于狂犬病入侵，