Evidence map›Paper›PMID 32376535›Full record

ArticleNan fang yi ke da xue xue bao = Journal of Southern Medical University2020

[Analysis of variation and evolution of SARS-CoV-2 genome].

Yezhen Zhou, Shihao Zhang, Jiayi Chen, Chengsong Wan, Wei Zhao, Bao Zhang

Abstract read
In one paragraph

Article in Nan fang yi ke da xue xue bao = Journal of Southern Medical University, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. SARS-CoV-2 and natural infection in animals.Journal of medical virology · 2023
    Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. [Progress in source tracking of SARS-CoV-2].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2020
    Article
  10. Article
  11. Clinical and radiological features of novel coronavirus pneumonia.Journal of X-ray science and technology · 2020
    Review
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

6 authors.

Yezhen ZhouBiosafety Level-3 Laboratory, School of Public Health, Southern Medical University, Guangzhou 510515, China.
Shihao ZhangBiosafety Level-3 Laboratory, School of Public Health, Southern Medical University, Guangzhou 510515, China.
Jiayi ChenBiosafety Level-3 Laboratory, School of Public Health, Southern Medical University, Guangzhou 510515, China.
Chengsong WanBiosafety Level-3 Laboratory, School of Public Health, Southern Medical University, Guangzhou 510515, China.
Wei ZhaoBiosafety Level-3 Laboratory, School of Public Health, Southern Medical University, Guangzhou 510515, China.
Bao ZhangBiosafety Level-3 Laboratory, School of Public Health, Southern Medical University, Guangzhou 510515, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo analyze the evolution and variation of SARS-CoV-2 during the epidemic starting at the end of 2019.

methodsWe downloaded the full-length genome sequence of SARS-CoV-2 from the databases of GISAID and NCBI. Using the software for bioinformatics including MEGA-X, BEAST, and TempEst, we constructed the genomic evolution tree, inferred the time evolution signal of the virus, calculated the tMRCA time of the virus and analyzed the selection pressure of the virus during evolution.

resultsThe phylogenetic tree showed that SARS-CoV-2 belonged to the Sarbecovirus subgenus of β Coronavirus genus together with bat coronavirus BetaCoV/bat/Yunnan/RaTG13/2013, bat-SL-CoVZC45, bat-SL-CoVZXC21 and SARS-CoV. The genomic sequences of SARS-CoV-2 isolated from the ongoing epidemic showed a weak time evolution signal with an average tMRCA time of 73 days (95% CI: 38.9-119.3 days). No positive time evolution signal was found between SARS-CoV-2 and BetaCoV/bat/Yunnan/RaTG13/2013, but the former virus had a strong positive temporal evolution relationship with bat-SL-CoVZC45 and SARS-CoV. The major cause for mutations of SARS-CoV-2 was the pressure of purification selection during the epidemic.

conclusionsSARS-CoV-2 may have emerged as early as November, 2019, originating most likely from bat-associated coronavirus. This finding may provide evidence for tracing the sources and evolution of the virus.

Indexed as

ChiropteraGenome, ViralAnimalsBetacoronavirusBiological EvolutionChinaCoronavirusCoronavirus InfectionsCOVID-19PandemicsPhylogenyPneumonia, ViralSARS-CoV-2Whole Genome SequencingcoronavirusevolutionmutationSARS-CoV-2

Identifiers

PMID32376535
PMCPMC7086142

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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.