Evidence map›Paper›PMID 33477885›Full record

ArticleViruses2021

Intra-Host Diversity of SARS-Cov-2 Should Not Be Neglected: Case of the State of Victoria, Australia.

Alix Armero, Nicolas Berthet, Jean-Christophe Avarre

Abstract read
In one paragraph

Article in Viruses, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

44 citing papers in PubMed.

  1. Article
  2. SARS-CoV-2 mutant spectrum complexity is an epidemiologically evolvable trait.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  5. Review
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  10. Crykey: Rapid Identification of SARS-CoV-2 Cryptic Mutations in Wastewater.medRxiv : the preprint server for health sciences · 2023
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Alix ArmeroThe Center for Microbes, Development and Health, Institut Pasteur of Shanghai-Chinese Academy of Sciences, Discovery and Molecular Characterization of Pathogens, Shanghai 200000, China.
Nicolas BerthetThe Center for Microbes, Development and Health, Institut Pasteur of Shanghai-Chinese Academy of Sciences, Discovery and Molecular Characterization of Pathogens, Shanghai 200000, China.
Jean-Christophe AvarreISEM, University of Montpellier, CNRS, EPHE, IRD, 34095 Montpellier, France.ORCID 0000-0001-6899-7052

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since the identification of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) as the etiological agent of the current COVID-19 pandemic, a rapid and massive effort has been made to obtain the genomic sequences of this virus to monitor (in near real time) the phylodynamic and diversity of this new pathogen. However, less attention has been given to the assessment of intra-host diversity. RNA viruses such as SARS-CoV-2 inhabit the host as a population of variants called quasispecies. We studied the quasispecies diversity in four of the main SARS-CoV-2 genes (ORF1a, ORF1b, S and N genes), using a dataset consisting of 210 next-generation sequencing (NGS) samples collected between January and early April of 2020 in the State of Victoria, Australia. We found evidence of quasispecies diversity in 68% of the samples, 76% of which was nonsynonymous variants with a higher density in the spike (S) glycoprotein and ORF1a genes. About one-third of the nonsynonymous intra-host variants were shared among the samples, suggesting host-to-host transmission. Quasispecies diversity changed over time. Phylogenetic analysis showed that some of the intra-host single-nucleotide variants (iSNVs) were restricted to specific lineages, highlighting their potential importance in the epidemiology of this virus. A greater effort must be made to determine the magnitude of the genetic bottleneck during transmission and the epidemiological and/or evolutionary factors that may play a role in the changes in the diversity of quasispecies over time.

Indexed as

AustraliaBase SequenceCoronavirus Nucleocapsid ProteinsCOVID-19Genetic VariationGenome, ViralHigh-Throughput Nucleotide SequencingPhylogenyPolyproteinsQuasispeciesSARS-CoV-2Sequence Analysis, RNASpike Glycoprotein, CoronavirusVictoriaViral ProteinsCoronavirus Nucleocapsid ProteinsN protein, SARS-CoVORF1ab polyprotein, SARS-CoV-2PolyproteinsSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2Viral Proteinsgenetic bottlenecknonsynonymous iSNVsphylogeneticquasispeciesSARS-CoV-2transmission

Identifiers

PMID33477885
PMCPMC7833370

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.