科研之友
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摘要
An almost periodic epidemic model with age structure in a patchy environment is considered. The existence of the almost periodic disease-free solution and the definition of the basic reproduction ratio R-0 are given. Based on those, it is shown that a disease dies out if the basic reproduction number R-0 is less than unity and persists in the population if it is greater than unity.
- 出版日期2016-1
- 单位兰州大学
