Related Experiment Video
Updated: Jul 28, 2025
18:10
Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency
Published on: June 16, 2011
29.6K
Contact-number-driven virus evolution: A multi-level modeling framework for the evolution of acute or persistent RNA
Junya Sunagawa1, Ryo Komorizono2, Hyeongki Park3
1Department of Advanced Transdisciplinary Science, Hokkaido University, Sapporo, Hokkaido, Japan.
Plos Computational Biology
|May 30, 2023
Summary
Host contact rates shape viral evolution. Dense contacts favor acute viruses (high production, short duration), while sparse contacts favor persistent viruses (low production, long duration). This explains human society
Area of Science:
- Virology
- Evolutionary Biology
- Epidemiology
Background:
- Host population dynamics significantly influence viral evolution.
- RNA viruses like SARS-CoV-2 persist in humans with short infections and high viral loads.
- Persistent viruses with long infection durations and low viral loads are rare in humans, often found in nonhuman hosts.
Purpose of the Study:
- To explore the evolutionary pathways of persistent viruses.
- To investigate how host contact history impacts viral evolution.
- To understand the prevalence of acute versus persistent viral infections in human populations.
Main Methods:
- Utilized a multi-level modeling approach.
- Incorporated individual-level virus infection dynamics.
- Analyzed population-scale transmission patterns, focusing on host contact history.
Main Results:
- High-density host contact favors viruses with high production rates and low accuracy, leading to short infections and high viral loads.
- Low-density host contact favors viruses with low production rates and high accuracy, resulting in long infections and low viral loads.
- These findings explain the evolutionary divergence leading to acute versus persistent viral infections.
Conclusions:
- Host contact patterns are a critical determinant of viral evolutionary strategies.
- The study provides insights into the origins of persistent viruses.
- Explains why acute viral infections are more common than persistent infections in human societies.
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