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Updated: Jun 23, 2026
11:14
Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection
Published on: November 7, 2018
Reconciling fast Hepatitis B evolutionary rates with ancient co-divergence
Biorxiv : the Preprint Server for Biology
|June 22, 2026
Summary
Hepatitis B virus (HBV) evolutionary rates were estimated using a novel Bayesian model, revealing a decline over time. This reconciles viral spread with human migration, offering insights into prehistory and pathogen diversity.
Area of Science:
- Virology
- Evolutionary Biology
- Computational Biology
Background:
- Estimating Hepatitis B virus (HBV) evolutionary rates and divergence times is challenging due to conflicting calibration methods and significant rate variation.
- Ancient and modern HBV genomic data hold potential for understanding viral evolution and human history.
Purpose of the Study:
- To develop a Bayesian mixed-effects molecular clock model that addresses rate variation, including time-dependent decay.
- To reconcile HBV divergence estimates with human migration events across different timescales.
- To provide insights into human prehistory and the processes shaping pathogen diversity using ancient viral genomes.
Main Methods:
- Developed a Bayesian mixed-effects molecular clock model incorporating time-dependent rate decay.
- Analyzed ancient and modern HBV genomic data.
- Performed phylogeographic reconstructions to trace viral dispersal patterns.
Main Results:
- Identified a significant decline in HBV evolutionary rates over time.
- Reconciled HBV divergence estimates with human migration events, including Neolithic farming and steppe expansions.
- Showcased HBV spread into Europe linked to human migration patterns.
- Demonstrated Neolithic-associated lineage dispersal at ~1 km/year.
- Revealed genotype D expansion during the Bronze Age at a higher rate, linked to steppe expansions.
- Identified recombination between lineages leading to genotype E formation in Africa.
Conclusions:
- Ancient viral genomes analyzed with advanced models offer a powerful tool for studying human prehistory.
- The study reconciles viral evolution with human migration, providing a new perspective on pathogen diversity.
- HBV spread patterns parallel proposed origins of Indo-European languages, linking viral and human demographic history.
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