Cost assessment of control measure for brucellosis in Jilin province, China

In the late 1990s, the epidemic in Jilin province in China started to come back and lead to re-rising of the number of the infected human. Consequently, government is adopting standard control measures: vaccination, detection-culling and tracking-culling of sheep and so on. Due to limited government funding, which measure is the most economical is need to further investigate. In this paper, based on the transmission mechanism of brucellosis between sheep and human, we establish a dynamical model to assess these three measures. Besides the analysis of dynamical behavior of model, the economic factors are considered to estimate costs of control measures. By numerical simulation, we obtain that at present, the cost of vaccination of sheep population in Jilin province is the largest, and the tracking-culling is the smallest. For detection-culling, the theoretical cost during 20 years is largest when the detection rate is 0.4. All these provide theoretical basis and guidance for brucellosis control.