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Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

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Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
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Steps in Outbreak Investigation01:18

Steps in Outbreak Investigation

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In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
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Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
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PK–PD modeling has significantly influenced FDA regulatory decisions, particularly drug approval, dosage optimization, and labeling. These models integrate pharmacokinetics (PK) and pharmacodynamics (PD) to predict drug behavior and effects, aiding in optimizing dosing regimens and enhancing the probability of clinical trial success.One notable example is Nesiritide (Natrecor®), a recombinant human brain natriuretic peptide for treating acute decompensated congestive heart failure...
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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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Pharmacodynamic models are essential tools in understanding the relationship between drug concentrations and their effects on biological systems. By characterizing the dynamics of drug action, these models guide dose selection, optimize therapeutic efficacy, and inform the development of new drugs. Two major classes of pharmacodynamic models include direct effect and indirect response models.Direct Effect ModelsDirect effect models describe the immediate relationship between drug concentration...
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Protocol for Dengue Infections in Mosquitoes A. aegypti and Infection Phenotype Determination
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気候情報を考慮したデング熱伝播モデルとベイズ意思決定支援

Priyanka Harjule1, Harshit1, Divyansh Ramola2

  • 1Department of Mathematics, Malaviya National Institute of Technology, Jaipur 302017, India.

Acta tropica
|February 28, 2026
PubMed
まとめ

この研究では、疾患拡大予測を改善するために気候に敏感なデング熱モデルを開発しました。調査の結果、デング熱の効果的な制御のためには、介入は気候変動に適応する必要があることが示されました。

キーワード:
基本再生産数ベイズ解析気候に敏感なデング熱モデリング制御戦略評価疫学数理モデリングSEIR-SIモデル

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科学分野:

  • 疫学; 数理モデリング; 気候科学

背景:

  • デング熱の伝播は気候の影響を受けるため、正確な予測には気候に敏感なモデルが必要です。
  • 従来のモデルは、環境要因の動的な影響を捉えきれないことが多く、予測能力と政策関連性を制限しています。

研究 の 目的:

  • 非自律的で気候に敏感なSEIR-SIデング熱モデルを定式化し、気象変数を組み込むこと。
  • デング熱伝播ダイナミクスに対する気温、湿度、降水の影響を分析すること。
  • 不確実性の定量化と介入評価のために、モデルをベイズフレームワークに統合すること。

主な方法:

  • 主要なパラメータが気温、湿度、降水量によって変化する気候に敏感なSEIR-SIデング熱モデルを定式化しました。
  • 次世代演算子を使用して基本再生産数(R0)を解析的に決定し、疾患の持続閾値を確立しました。
  • 介入の効果と気候応答係数を推定するために、アフィン不変MCMCを用いたベイズ推論を採用しました。

主要な成果:

  • 気候情報を組み込んだモデルは、静的なモデルと比較して適合度が20%-25%向上し、季節的なデング熱のピークを正確に予測しました。
  • 事後解析により、介入の相乗効果が明らかになりました:幼虫発生源管理(0.28)、蚊帳(0.12)、および噴霧(0.19)。
  • 温暖で湿度の高い条件は介入の効果を著しく低下させ、気温が+2°C/湿度+5%で罹患率が約19%増加し、または要因あたり約10%増加しました。

結論:

  • 気候応答性のデング熱モデルは、予測精度と政策の実用性を向上させます。
  • 介入戦略は、高リスクの気候期間中に幼虫発生源管理、個人保護、および標的を絞った噴霧を統合して、適応的にする必要があります。
  • 気候変動は、効果的なデング熱制御のために、動的でポートフォリオベースのアプローチを必要とします。