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Related Concept Videos

Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

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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Evolutionary Processes in Microbes

Microbial evolution occurs rapidly due to short generation times and a variety of genetic processes, including horizontal gene transfer, mutation, recombination, and genetic drift. These mechanisms collectively enable microbes to adapt swiftly to changing environments.Horizontal gene transfer (HGT) allows genes to move between different species and occurs through three main mechanisms: conjugation, transformation, and transduction. Conjugation involves direct cell-to-cell contact for DNA...
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Infection

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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...

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Related Experiment Video

Updated: May 16, 2026

Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance
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Published on: May 2, 2018

What limits the evolutionary emergence of pathogens?

S Gandon1, M E Hochberg, R D Holt

  • 1CEFE, CNRS, 1919 route de Mende, Montpellier 34293, France. sylvain.gandon@cefe.cnrs.fr

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|December 5, 2012
PubMed
Summary

Pathogen adaptation drives epidemic potential in new hosts. Understanding ecological and genetic factors, like mutation and migration, is key to predicting and preventing infectious disease emergence.

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Area of Science:

  • Evolutionary biology
  • Epidemiology
  • Mathematical modeling

Background:

  • Pathogen adaptation is crucial for causing epidemics in novel host populations.
  • Understanding the factors influencing pathogen emergence is vital for public health.

Purpose of the Study:

  • To review recent theoretical and empirical studies on the evolutionary emergence of pathogens.
  • To discuss ecological and genetic factors affecting pathogen emergence.
  • To explore how different modeling approaches impact predictions of emergence probability.

Main Methods:

  • Overview of theoretical and empirical studies.
  • Discussion of ecological factors (migration, life history, host heterogeneity).
  • Analysis of genetic factors (mutation rate and effects).
  • Comparison of different modeling approaches.

Main Results:

  • Ecological and genetic factors significantly influence the likelihood of pathogen emergence.
  • Modeling choices can alter predictions of evolutionary emergence probability.
  • Theoretical insights can inform surveillance and intervention strategies.

Conclusions:

  • Pathogen evolutionary emergence is a complex process influenced by multiple factors.
  • Accurate modeling is essential for predicting and managing infectious disease outbreaks.
  • Strategies should focus on reducing the emergence and re-emergence of infectious diseases.