在一个小规模的亚马逊社会中,SARS-CoV-2传播的超人口动态
Thomas S Kraft1,2,3, Edmond Seabright4,5, Sarah Alami2,4
1Department of Anthropology, University of Utah, Salt Lake City, Utah, United States of America.
PLoS biology
|August 22, 2023
概括
偏远的土著社区很容易受到流行病的影响. 尽管孤立,但大量的旅行和社交网络促进了疾病的快速传播,使集体隔离在没有严格控制的情况下无效. 接种疫苗是非常重要的.
科学领域:
- 流行病学 流行病学
- 数学建模的数学建模
- 人类学是人类学.
背景情况:
- 传染病爆发取决于人类接触模式,受地理,文化和基础设施的影响.
- 小规模,偏远的社会似乎免受大流行,但他们的社会结构会增加脆弱性.
- 建议对具有有限医疗保健机会的土著人口进行自愿集体隔离,以减轻大流行影响.
研究的目的:
- 评估亚马逊土著社区对SARS-CoV-2的脆弱性.
- 在这些人群中评估诸如自愿集体隔离等干预措施的有效性.
- 使用实证数据和随机网络元人口模型分析疾病动态.
主要方法:
- 开发了一种用于SARS-CoV-2感染动态的随机网络元人口模型.
- 用玻利维亚亚亚马逊采集者-园艺家人口结构,流动性和联系网络的高分辨率数据对模型进行参数化.
- 模拟的疫情情情景和干预有效性,将模型预测与血清测试数据进行比较.
主要成果:
- 相对孤立提供了最小的人口级别保护,预计累计发病率为80%.
- 偏远并没有提供保护;高旅行率和密集的社交网络促进了快速传播.
- 社区密度,家庭的中心位置和家庭规模显著增加了个体感染风险.
- 如果没有极端的控制措施来限制旅行和访问,集体隔离不太可能有效.
结论:
- 社会组织和与城市中心的隔离为农村土著社区提供了很少的流行病保护.
- 小规模人口特征的紧密的社会结构需要标准的控制措施,包括疫苗接种.
- 该研究的模型成功预测了疫情的严重程度,突出了针对性公共卫生战略的需要.
相关概念视频
02:04Conservation of Small Populations
13.2K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
13.2K
00:30What are Populations and Communities?
34.0K
Overview
34.0K
02:07Conservation of Declining Populations
9.7K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
9.7K
01:21Causality in Epidemiology
465
Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
465
02:39Gene Flow
35.2K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.2K
01:12Analysis of Population Pharmacokinetic Data
293
Analysis of population pharmacokinetic data involves studying the behavior of drugs within diverse populations to understand their pharmacokinetic parameters. Traditional pharmacokinetic methods typically involve collecting samples from a few individuals and estimating these parameters. While these methods are commonly used, they have limitations in capturing the variability in drug response among individuals or heterogeneous populations. Population pharmacokinetics is employed to address these...
293