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Infectious Diseases and Their Occurrence01:28

Infectious Diseases and Their Occurrence

Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...
Viral Recombination00:57

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
Reservoir of Infection01:30

Reservoir of Infection

Infectious diseases arise from intricate interactions between pathogens and their reservoirs. A reservoir of infection refers to the natural habitat where a pathogen lives, grows, and multiplies, serving as a continual source of infection. Reservoirs are broadly classified as either living or nonliving, and each plays a unique role in disease transmission, significantly influencing public health interventions and control strategies.Humans act as reservoirs for a wide array of pathogens,...
Rabies01:28

Rabies

Rabies is a lethal zoonotic disease caused by a single-stranded, negative-sense RNA virus of the Lyssavirus genus, within the family Rhabdoviridae. Its primary mode of transmission to humans is through bites or saliva-contaminated scratches from infected mammals such as dogs, bats, raccoons, or foxes. Transmission can also occur if infectious saliva contacts abraded skin or intact mucous membranes, including the conjunctiva.Viral Entry and Early ReplicationOnce introduced at the bite or scratch...
Infection01:20

Infection

When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
Causality in Epidemiology01:21

Causality in Epidemiology

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...

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Updated: Jun 18, 2026

High-throughput Detection of Respiratory Pathogens in Animal Specimens by Nanoscale PCR
11:00

High-throughput Detection of Respiratory Pathogens in Animal Specimens by Nanoscale PCR

Published on: November 28, 2016

人間と動物のインターフェースにおける流行動態.

James O Lloyd-Smith1, Dylan George, Kim M Pepin

  • 1Department of Ecology and Evolutionary Biology, University of California at Los Angeles, Los Angeles, CA 90095, USA. jlloydsmith@ucla.edu

Science (New York, N.Y.)
|December 8, 2009
PubMed
まとめ
この要約は機械生成です。

インフルエンザやペストのようなほとんどの感染症は,動物と人間 (動物性感染症) の間で広がります. 制御には数学的モデリングが不可欠ですが,複雑な動物性感染症はしばしば無視されます. 多様な病原体のライフサイクルと種間感染に対処するために,新しいモデルが必要である.

さらに関連する動画

Whole Genome Sequencing for Rapid Characterization of Rabies Virus Using Nanopore Technology
10:26

Whole Genome Sequencing for Rapid Characterization of Rabies Virus Using Nanopore Technology

Published on: August 18, 2023

関連する実験動画

Last Updated: Jun 18, 2026

High-throughput Detection of Respiratory Pathogens in Animal Specimens by Nanoscale PCR
11:00

High-throughput Detection of Respiratory Pathogens in Animal Specimens by Nanoscale PCR

Published on: November 28, 2016

Whole Genome Sequencing for Rapid Characterization of Rabies Virus Using Nanopore Technology
10:26

Whole Genome Sequencing for Rapid Characterization of Rabies Virus Using Nanopore Technology

Published on: August 18, 2023

科学分野:

  • 動物性感染症の生態学
  • 数学的な流行病学である.
  • "ワン・ヘルス・ワン・ヘルス"

背景:

  • ほとんどの感染症は動物から発生し,動物集団から発生し,動物集団の中で循環する動物性感染症である.
  • インフルエンザやペストのような古典的な動物性感染症は,動物から人間への感染のダイナミクスを強調しています.
  • 動物性感染症の複雑な生態学は,効果的な制御のために高度な分析ツールを必要とします.

研究 の 目的:

  • 動物性感染症の改善された数学モデリングの必要性を強調する.
  • 軽視された疾患タイプと種間感染を含むモデリングのより広い範囲を提唱する.
  • 動物性病の研究において宿主種と科学分野を統合することの重要性を強調する.

主な方法:

  • 感染症の既存のモデリングアプローチのレビュー.
  • 現在の研究におけるギャップを特定し,特にベクトル感染や原生虫感染を特定する.
  • 次世代の動物性感染症モデルを開発するための概念的枠組み.

主要な成果:

  • 現在のモデルは,よりシンプルなライフサイクルと即時の緊急性 (例えば,インフルエンザ,SARS) を有する病原体に焦点を当てていることが多い.
  • 媒介体感染,慢性感染,原生虫感染,および種間感染はモデル化されていない.
  • 多様な病原体の生命史と複数の宿主種を統合したモデルには大きなギャップが存在します.

結論:

  • 効果的な動物性病の予防と研究には,新世代の数学モデルが必要です.
  • これらのモデルは,より幅広い種類の病原体と生態学的相互作用をカバーする必要があります.
  • 分野間および種間アプローチは,動物性感染症の理解と対策を進めるために不可欠です.