用两种菌株,季节性和年龄异质性的结核病的数学建模
1Department of Communicable Diseases Control and Prevention, Shenzhen Center for Disease Control and Prevention, 8 Longyuan Rd, 518055, Shenzhen, China; School of Science, Harbin Institute of Technology, Shenzhen, 518055, China.
Journal of theoretical biology
|November 15, 2025
概括
这项研究利用双重菌株 (耐药和药物敏感) 和年龄异质性来模拟结核病 (TB) 传播动态. 对药物敏感的结核病菌株的传播率较高,疫苗接种和减少接触强度等干预措施是控制的关键.
科学领域:
- 流行病学 流行病学
- 数学建模的数学建模
- 传染病的动态传染病的动态.
背景情况:
- 结核病 (TB) 构成了全球卫生挑战,因药物耐药性和不同年龄特定的传播模式而加剧.
- 了解耐药性和耐药性结核病菌株之间的复杂相互作用对于有效的控制策略至关重要.
研究的目的:
- 开发和分析结核病传播的双菌株数学模型,包括年龄结构,社会相互作用和季节性.
- 调查耐药和药物敏感结核病菌株之间的竞争动态.
- 通过数据驱动的见解,为目标结核病控制策略提供信息.
主要方法:
- 开发了一种结核病传播的双菌株数学模型,区分耐药和药物敏感菌株.
- 为了分析疾病传播潜力,为两种菌株提取了基本繁殖数 (R0).
- 利用马尔科夫链蒙特卡洛 (MCMC) 算法对该模型与中国大陆八个年龄组的月度结核病感染数据进行校准.
主要成果:
- 对药物敏感的结核病菌株表现出比耐药菌株更显著的传播特征.
- 该模型确定,当R0 < 1时,无疾病周期平衡在全球上是异常稳定的.
- 分析显示,在不同的R0情景下,两种菌株之间的竞争动态不同.
结论:
- 增加疫苗接种覆盖率,特别是在年轻人群中,大大降低了结核病的流行率.
- 减少社交接触的强度,可以有效地抑制所有年龄段的结核病传播.
- 整合年龄结构建模,菌株动态和行为干预措施对于有效的结核病控制至关重要.
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