有媒体报道的SEIR模型的动态介导非线性传染力
Jingli Xie1, Hongli Guo1, Meiyang Zhang1
1College of Mathematics and Statistics, Jishou University, Jishou, Hunan 416000, China.
媒体报道显著影响传染病的传播. 结合媒体效应的新SEIR模型表明,如果基本复制数低于1,疾病将会灭绝;否则,它将会持续存在.
科学领域:
- 流行病学 流行病学
- 数学生物学 数学生物学
- 公共卫生 公共卫生
背景情况:
- 媒体报道在感染性疾病爆发期间塑造公众的看法和行为方面发挥着至关重要的作用.
- 了解媒体的影响对于准确的疾病建模和控制至关重要.
研究的目的:
- 开发一种新的SEIR (易感-暴露-传染-恢复) 模型,其中包括媒体报道对疾病传播的影响.
- 分析流行病学动态,确定疾病持续或灭绝的条件.
主要方法:
- 一个经过修改的SEIR模型是用媒体报道影响的非线性感染力来制定的.
- 使用下一代矩阵方法计算基本复制数 ($ \mathcal{R}_{0} $).
- 全球值动态是根据$ \mathcal{R}_{0} $.的值建立的.
主要成果:
- 该模型为疾病动态设定了一个明确的值:如果R_{0}<1$,无疾病平衡是稳定的,导致疾病根除.
- 如果 $ \mathcal{R}_{0} > 1 $,本地平衡是稳定的,表明疾病在人口中持久.
- 灵敏度分析显示,人口招募率 ($ \Lambda $) 和疾病传播率 ($ \beta _{1} $) 是对$ \mathcal{R}_{0} $最有影响的因素.
结论:
- 开发的SEIR模型为媒体报道如何调解传染病传播提供了有价值的见解.
- 这些发现强调了基本生殖数在预测疾病结果中的关键作用.
- 公共卫生干预措施和媒体策略应考虑确定的敏感参数,以有效管理传染病.
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