摘要
研究了一个带有垂直传染、具有年龄结构的接种SIS流行病模型,得到了正平衡解存在性的充分条件.
An SIS age-structured epidemic model with vaccination and vertical transmission is studied.The sufficient conditions for the existence of a positive endemic equilibrium are obtained.
出处
《烟台师范学院学报(自然科学版)》
2002年第1期11-15,19,共6页
Yantai Teachers University journal(Natural Science Edition)