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Predicting virus emergence amid evolutionary noise.

Jemma L Geoghegan1, Edward C Holmes2

  • 1Department of Biological Sciences, Macquarie University, Sydney, New South Wales 2109, Australia.

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Summary
This summary is machine-generated.

Predicting virus disease emergence is challenging due to conflating time scales and numerous unsampled viruses. Understanding emergence requires integrating ecological and genetic factors, with surveillance being key for prevention.

Keywords:
emergenceevolutionphylogenyspill-overvirospherevirus

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Area of Science:

  • Virology
  • Evolutionary Biology
  • Epidemiology
  • Population Genetics

Background:

  • Virus disease emergence is a critical biomedical research area.
  • Current prediction efforts often fail by mixing evolutionary and epidemiological time scales.
  • The vast number of unsampled viruses poses a significant challenge to prediction.

Purpose of the Study:

  • To critically evaluate current approaches to predicting virus disease emergence.
  • To propose a new mechanistic and integrated framework for understanding virus emergence.
  • To identify practical strategies for preventing and containing novel disease outbreaks.

Main Methods:

  • Analysis of evolutionary and epidemiological time scales in disease emergence studies.
  • Development of a population genetic framework integrating ecological and genetic factors.
  • Review of existing knowledge on virus evolution and cross-species transmission.

Main Results:

  • Predictive models often fail due to conflation of distinct evolutionary and epidemiological scales.
  • Phylogenetic data at family scales offer limited insight into short-term emergence processes.
  • Host population size and density are crucial factors in successful virus emergence, as explained by the proposed population genetic framework.

Conclusions:

  • A new integrated view is needed, combining ecological and genetic factors for understanding virus emergence.
  • The proposed population genetic framework offers insights into emergence dynamics.
  • Ongoing virological surveillance at the human-animal interface and in disturbed ecological regions is the most practical approach for prevention and containment.