讨论一类具有两种病毒的脉冲时滞传染病SEIR模型,利用脉冲微分方程比较定理,得到系统无病周期解全局吸引的充分条件.
An SEIR model with Time Delay and Impulsion for diseases with two pathogen strains was formulated.Based on the comparison theorem of impulsive differential equation,a globally attractive condition for the infection-free periodic solution of the system was given.