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Related Concept Videos

Models of Health Promotion and Illness Prevention II01:18

Models of Health Promotion and Illness Prevention II

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The person's health status fluctuates continually, varying from being in good health to becoming ill and returning to being healthy. To understand the concept of illness prevention, there are two models. First, the health-illness continuum model is a graphic representation of an individual's wellness. It states that a person is considered healthy in the absence of physical disease and the presence of good emotional health.
The agent-host-environment model states that disease results...
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Predator-Prey Interactions02:39

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Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
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Infection01:20

Infection

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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.
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Symbiosis00:58

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Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
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Models of Health Promotion and Illness Prevention I01:25

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A model is a theoretical way to understand a concept or an idea. Models can overcome barriers to health regardless of diverse economic and cultural backgrounds. In addition, models make the task easier by providing different ways to approach complex issues. There are two major health promotion models: the health belief model and the health promotion model.
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Viral Recombination00:57

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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.
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Tick Microbiome Characterization by Next-Generation 16S rRNA Amplicon Sequencing
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Predators indirectly control vector-borne disease: linking predator-prey and host-pathogen models.

Sean M Moore1, Elizabeth T Borer, Parviez R Hosseini

  • 1Department of Zoology, Oregon State University, Corvallis, OR 97331, USA. mooresea@science.oregonstate.edu

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Predators controlling arthropod vectors can reduce or eliminate vector-borne pathogens. Introducing predators can slow emerging disease spread and increase host populations by reducing infection rates.

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Area of Science:

  • Ecology
  • Epidemiology
  • Theoretical Biology

Background:

  • Vector-borne pathogens impact human, agricultural, and natural systems.
  • Pathogen transmission relies on vector population dynamics and community interactions.
  • Predation on vectors offers a potential indirect control mechanism for pathogen prevalence.

Purpose of the Study:

  • To investigate the indirect effects of predators on vector-borne pathogen dynamics.
  • To determine if predation can prevent pathogen persistence or alter host-pathogen stability.
  • To model the integration of predator-prey and host-pathogen interactions.

Main Methods:

  • Development of a theoretical model integrating predator-prey and host-pathogen dynamics.
  • Analysis of how predation influences pathogen prevalence and spread.
  • Simulation of host-pathogen dynamics under varying levels of vector predation and fecundity.

Main Results:

  • Predation on vectors reduces pathogen prevalence, potentially leading to extinction, especially with increased vector fecundity.
  • Predation can significantly slow the initial spread of vector-borne pathogens.
  • Predators indirectly increase host abundance by reducing host infection rates.

Conclusions:

  • Community interactions, like predation, are crucial for understanding disease dynamics and can alter predictions.
  • Introducing natural enemies of vectors or predators may be a viable strategy to manage emerging vector-borne diseases.
  • Predator-prey interactions play a significant role in regulating vector-borne pathogen transmission and impact.