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Related Concept Videos

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.
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...
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Overview of Protists01:27

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Protists are diverse eukaryotic microorganisms that lack the specialized tissues of plants and animals and the chitinous cell walls of fungi. Their early divergence within Eukarya resulted in structural, functional, and ecological diversity. They are classified into supergroups such as Archaeplastida, Excavata, Amoebozoa, Rhizaria, Alveolata, and Stramenopiles, determined through genetic analysis and structural similarities.Structural and Functional AdaptationsProtists have various adaptations...
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Factors Affecting the Risk of Infection01:26

Factors Affecting the Risk of Infection

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The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
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Defense Against Bacterial Pathogens01:31

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The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
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Diversity of Protists II01:27

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Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
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Threats to Biodiversity01:50

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There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
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Pathogens and planetary change.

Colin J Carlson1, Cole B Brookson1,2, Daniel J Becker3

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Emerging infectious diseases are linked to environmental changes and biodiversity loss. Addressing these requires integrated strategies for pathogen surveillance, conservation, and global health preparedness to prevent future pandemics.

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Epidemiology
  • Conservation Science

Background:

  • Interconnected crises of emerging infectious diseases, biodiversity loss, and anthropogenic environmental change pose significant social and ecological risks.
  • Ecological and evolutionary principles explain increased prevalence of pandemics and wildlife die-offs.
  • Land-use change and biodiversity loss correlate with rising zoonotic and vector-borne diseases.

Purpose of the Study:

  • To review the response of pathogens and parasites to global change.
  • To explore implications for pandemic prevention and biodiversity conservation.
  • To provide evidence-based strategies for mitigating infectious disease risks in the Anthropocene.

Main Methods:

  • Review of ecological and evolutionary principles.
  • Analysis of disease-driver relationships.
  • Synthesis of data on pathogen surveillance and ecological interventions.

Main Results:

  • Global change exacerbates infectious disease emergence and spread.
  • Biodiversity loss and habitat alteration increase zoonotic disease risk.
  • Certain species, like bats, are significant reservoirs for emerging pathogens.

Conclusions:

  • Preventing future pandemics requires focused monitoring of high-risk viruses at human-animal interfaces.
  • Comprehensive strategies including cross-species pathogen surveillance, conservation interventions, and enhanced epidemic preparedness are crucial.
  • Scientists must fill data gaps and strengthen the evidence base for effective ecological interventions.