研究了一类带扩散的具有垂直传染和预防接种的传染病模型,利用上下解方法和李雅普诺夫泛函方法刻画了常数平衡解的稳定性和传染病爆发的门槛现象.
A diffusion epidemic model with vertical infection and vaccination is investigated. We get the stability of constant equilibrium and the threshold phenomenon by using upper-lower solutions and Lyapunov functional arguments.