Evidence map›Paper›PMID 33785459›Full record

ArticleInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2021

Emergence and outcomes of the SARS-CoV-2 'Marseille-4' variant.

Pierre-Edouard Fournier, Philippe Colson, Anthony Levasseur, Christian A Devaux, Philippe Gautret, Marielle Bedotto, Jeremy Delerce, Ludivine Brechard, Lucile Pinault, Jean-Christophe Lagier and 2 more

Abstract read
In one paragraph

Article in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 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
–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

37 citing papers in PubMed.

  1. Trial
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  3. Improving the ONE HEALTH approach: a lesson from SARS-CoV-2 pandemic.Journal of preventive medicine and hygiene · 2024
    Review
  4. Health Status and COVID-19 Epidemiology in an Inland Region of Portugal: A Retrospective Study.International journal of environmental research and public health · 2024
    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

12 authors.

Pierre-Edouard FournierIHU Méditerranée Infection, Marseille, France; Vecteurs - Infections Tropicales et Méditerranéennes (VITROME), Marseille, France. Electronic address: pierre-edouard.fournier@univ-amu.fr.
Philippe ColsonIHU Méditerranée Infection, Marseille, France; Microbes Evolution Phylogeny and Infections (MEPHI), Aix-Marseille Université, Marseille, France.
Anthony LevasseurIHU Méditerranée Infection, Marseille, France; Microbes Evolution Phylogeny and Infections (MEPHI), Aix-Marseille Université, Marseille, France.
Christian A DevauxIHU Méditerranée Infection, Marseille, France; Microbes Evolution Phylogeny and Infections (MEPHI), Aix-Marseille Université, Marseille, France.
Philippe GautretIHU Méditerranée Infection, Marseille, France; Vecteurs - Infections Tropicales et Méditerranéennes (VITROME), Marseille, France.
Marielle BedottoIHU Méditerranée Infection, Marseille, France.
Jeremy DelerceIHU Méditerranée Infection, Marseille, France.
Ludivine BrechardIHU Méditerranée Infection, Marseille, France.
Lucile PinaultIHU Méditerranée Infection, Marseille, France.
Jean-Christophe LagierIHU Méditerranée Infection, Marseille, France; Microbes Evolution Phylogeny and Infections (MEPHI), Aix-Marseille Université, Marseille, France.
Florence FenollarIHU Méditerranée Infection, Marseille, France; Vecteurs - Infections Tropicales et Méditerranéennes (VITROME), Marseille, France.
Didier RaoultIHU Méditerranée Infection, Marseille, France; Microbes Evolution Phylogeny and Infections (MEPHI), Aix-Marseille Université, Marseille, France. Electronic address: didier.raoult@gmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn Marseille, France, following a first severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) outbreak in March-May 2020, a second epidemic phase occurred from June, involving 10 new variants. The Marseille-4 variant caused an epidemic that started in August and is still ongoing.

methodsThe 1038 SARS-CoV-2 whole genome sequences obtained in our laboratory by next-generation sequencing with Illumina technology were analysed using Nextclade and nextstrain/ncov pipelines and IQ-TREE. A Marseille-4-specific qPCR assay was implemented. Demographic and clinical features were compared between patients with the Marseille-4 variant and those with earlier strains.

resultsMarseille-4 harbours 13 hallmark mutations. One leads to an S477N substitution in the receptor binding domain of the spike protein targeted by current vaccines. Using a specific qPCR, it was observed that Marseille-4 caused 12-100% of SARS-CoV-2 infections in Marseille from September 2020, being involved in 2106 diagnoses. This variant was more frequently associated with hypoxemia than were clade 20A strains before May 2020. It caused a re-infection in 11 patients diagnosed with different SARS-CoV-2 strains before June 2020, suggesting either short-term protective immunity or a lack of cross-immunity.

conclusionsMarseille-4 should be considered as a major SARS-CoV-2 variant. Its sudden appearance points towards an animal reservoir, possibly mink. The protective role of past exposure and current vaccines against this variant should be evaluated.

Indexed as

Genome, ViralMutationWhole Genome SequencingAnimalsCOVID-19EpidemicsFranceHumansMinkMolecular EpidemiologyPhylogenyReinfectionSARS-CoV-2COVID-19Marseille-4Molecular epidemiologyMutationsSARS-CoV-2SpikeVariant

Identifiers

PMID33785459
PMCPMC7997945

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.