Evidence map›Paper›PMID 30500827›Full record

ArticlePLoS neglected tropical diseases2018

Genetic characterization of Lassa virus strains isolated from 2012 to 2016 in southeastern Nigeria.

Olamide K Oloniniyi, Uche S Unigwe, Sayaka Okada, Mayuko Kimura, Shota Koyano, Yukiko Miyazaki, Michael O Iroezindu, Nnenna A Ajayi, Chinedu M Chukwubike, Nneka M Chika-Igwenyi and 6 more

Abstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 2 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

27 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
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  6. Article
  7. Lassa Fever: Critical Review and Prospects for Control.Tropical medicine and infectious disease · 2024
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Lassa Virus Genetics.Current topics in microbiology and immunology · 2023
    Article
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  14. Article
  15. Article
  16. Review
  17. Review
  18. 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

16 authors.

Olamide K OloniniyiDepartment of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
Uche S UnigweDepartment of Medicine, Federal Teaching Hospital Abakaliki, Abakaliki, Ebonyi, Nigeria.
Sayaka OkadaDepartment of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
Mayuko KimuraDepartment of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
Shota KoyanoDepartment of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
Yukiko MiyazakiDepartment of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
Michael O IroezinduDepartment of Medicine, College of Medicine, University of Nigeria, Ituku-Ozalla, Enugu, Nigeria.
Nnenna A AjayiDepartment of Medicine, University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu, Nigeria.
Chinedu M ChukwubikeDepartment of Microbiology, University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu, Nigeria.
Nneka M Chika-IgwenyiDepartment of Medicine, University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu, Nigeria.
Anne C NduDepartment of Community Medicine, College of Medicine, University of Nigeria, Ituku-Ozalla, Enugu, Nigeria.
Damian U NwidiDepartment of Medicine, University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu, Nigeria.
Haruka AbeDepartment of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
Shuzo UrataDepartment of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
Yohei KurosakiDepartment of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
Jiro YasudaDepartment of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lassa virus (LASV) is endemic in parts of West Africa where it causes Lassa fever (LF), a viral hemorrhagic fever with frequent fatal outcomes. The diverse LASV strains are grouped into six major lineages based on the geographical location of the isolated strains. In this study, we have focused on the lineage II strains from southern Nigeria. We determined the viral sequences from positive cases of LF reported at tertiary hospitals in Ebonyi and Enugu between 2012 and 2016. Reverse transcription-polymerase chain reaction (RT-PCR) showed that 29 out of 123 suspected cases were positive for the virus among which 11 viral gene sequences were determined. Phylogenetic analysis of the complete coding sequences of the four viral proteins revealed that lineage II strains are broadly divided into two genetic clades that diverged from a common ancestor 195 years ago. One clade, consisting of strains from Ebonyi and Enugu, was more conserved than the other from Irrua, although the four viral proteins were evolving at similar rates in both clades. These results suggested that the viruses of these clades have been distinctively evolving in geographically separate parts of southern Nigeria. Furthermore, the epidemiological data of the 2014 outbreak highlighted the role of human-to-human transmission in this outbreak, which was supported by phylogenetic analysis showing that 13 of the 16 sequences clustered together. These results provide new insights into the evolution of LASV in southern Nigeria and have important implications for vaccine development, diagnostic assay design, and LF outbreak management.

Indexed as

Evolution, MolecularGenetic VariationHumansLassa FeverLassa virusNigeriaPhylogenyViral ProteinsViral Proteins

Identifiers

PMID30500827
PMCPMC6267959

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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.