Evidence map›Paper›PMID 33767340›Full record

ArticleScientific reports2021

Deep viral blood metagenomics reveals extensive anellovirus diversity in healthy humans.

María Cebriá-Mendoza, Cristina Arbona, Luís Larrea, Wladimiro Díaz, Vicente Arnau, Carlos Peña, Juan Vicente Bou, Rafael Sanjuán, José M Cuevas

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
10.0field-weighted citation impact, top 2% of its field
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

37 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Article
  3. Anellovirus protein encoded byProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  4. Article
  5. Article
  6. Review
  7. Anellovirus species in the serum of acute febrile patients from Mato Grosso, central Western Brazil, 2019.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  8. Article
  9. Article
  10. Review
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  17. Review
  18. Article
  19. Expansion ofViruses · 2023
    Article
  20. Article
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

9 authors at 2 institutions in 1 country.

María Cebriá-MendozaInstitute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, 46980, Paterna, València, Spain.
Cristina ArbonaCentro de Transfusión de la Comunidad Valenciana, Valencia, Spain.
Luís LarreaCentro de Transfusión de la Comunidad Valenciana, Valencia, Spain.
Wladimiro DíazInstitute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, 46980, Paterna, València, Spain.
Vicente ArnauInstitute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, 46980, Paterna, València, Spain.
Carlos PeñaInstitute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, 46980, Paterna, València, Spain.
Juan Vicente BouInstitute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, 46980, Paterna, València, Spain.
Rafael SanjuánInstitute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, 46980, Paterna, València, Spain.
José M CuevasInstitute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, 46980, Paterna, València, Spain. cuevast@uv.es.
Universitat de València · ESGeneralitat Valenciana · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human blood metagenomics has revealed the presence of different types of viruses in apparently healthy subjects. By far, anelloviruses constitute the viral family that is more frequently found in human blood, although amplification biases and contaminations pose a major challenge in this field. To investigate this further, we subjected pooled plasma samples from 120 healthy donors in Spain to high-speed centrifugation, RNA and DNA extraction, random amplification, and massive parallel sequencing. Our results confirm the extensive presence of anelloviruses in such samples, which represented nearly 97% of the total viral sequence reads obtained. We assembled 114 different viral genomes belonging to this family, revealing remarkable diversity. Phylogenetic analysis of ORF1 suggested 28 potentially novel anellovirus species, 24 of which were validated by Sanger sequencing to discard artifacts. These findings underscore the importance of implementing more efficient purification procedures that enrich the viral fraction as an essential step in virome studies and question the suggested pathological role of anelloviruses.

Indexed as

ViromeAnelloviridaeBloodHealthy VolunteersHumansMetagenomics

Identifiers

PMID33767340
PMCPMC7994813
OpenAlexW3137252420

What OpenQuestion holds

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LicenceCC BY
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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.