摘要
研究一类具有垂直传染及脉冲免疫接种的时滞SEIR传染病模型,讨论了模型的无病周期解的全局吸引性,同时得到了带有时滞的持久性的充分条件.
A delayed SEIR epidemic model with vertical transmission and impulsive vaccination is studied. The global attractivity of the disease-free periodic solution in the model is discussed, and the sufficient condi-tion of the permanence for the system with delay is given.
出处
《渤海大学学报(自然科学版)》
CAS
2015年第3期193-199,203,共8页
Journal of Bohai University:Natural Science Edition
基金
辽宁省自然科学基金项目(No:LN2014160)
辽宁省教育厅项目(No:L2012404)
关键词
时滞
脉冲免疫接种
垂直传染
全局吸引性
持久性
time delay
impulsive vaccination
vertical transmission
global attractivity
permanence