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Viral Aggregation: Impact on Virus Behavior in the Environment.

Charles P Gerba1, Walter Q Betancourt1

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Viral aggregates significantly impact virus behavior and quantification in the environment. Predicting virus aggregation and disaggregation is complex due to virus type and environmental factors.

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Area of Science:

  • Environmental microbiology
  • Virology
  • Water quality science

Background:

  • Viral aggregates influence virus quantification and environmental behavior.
  • Aggregation can occur during replication within host cells or post-release due to environmental changes.
  • Factors like pH, salt type and concentration, and organic matter influence aggregate formation.

Purpose of the Study:

  • To investigate the formation and impact of viral aggregates in environmental settings.
  • To understand the factors influencing virus aggregation and disaggregation.
  • To highlight the implications of viral aggregation on environmental monitoring and management.

Main Methods:

  • Review of existing literature on virus aggregation.
  • Analysis of factors affecting viral aggregate formation (e.g., pH, salts, organic matter).
  • Examination of the impact of aggregates on virus survival and removal.

Main Results:

  • Viral aggregates form under specific conditions related to virus properties and environmental factors.
  • Aggregation generally increases virus survival and disinfectant resistance.
  • Viral aggregates can lead to overestimation of removal efficiency in filtration processes.

Conclusions:

  • Virus aggregation-disaggregation is a complex process influenced by virus type and environmental conditions.
  • Accurate prediction of viral behavior requires experimental data.
  • Understanding viral aggregation is crucial for effective environmental virus monitoring and disinfection strategies.