World's Best Scientists 2026 revealed!
Jean-Christophe Lagier

Jean-Christophe Lagier

D-Index & Metrics

Microbiology

D-Index
74
Citations
29084
World Ranking
1536
National Ranking
87

Jean-Christophe Lagier publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Jean-Christophe Lagier sits on this spectrum.

55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55 publications 679+

This scientist: 407 publications — 90th percentile

90% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

Jean-Christophe Lagier D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where Jean-Christophe Lagier sits on this spectrum.

40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 94 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 74 D-Index — 72nd percentile

72% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

Overview

Jean-Christophe Lagier is affiliated with Aix-Marseille University in France. Their research focuses primarily on the field of Medicine, with a specialization in Infectious Diseases, Molecular Biology, Epidemiology, Neurology, and Clinical Biochemistry.

The scientist's work encompasses several main topics including COVID-19 Clinical Research Studies, SARS-CoV-2 and COVID-19 Research, Long-Term Effects of COVID-19, Gut microbiota and health, Genomics and Phylogenetic Studies, Bacterial Identification and Susceptibility Testing, and SARS-CoV-2 detection and testing.

Frequent coauthors in their publications include Didier Raoult, Philippe Colson, Matthieu Million, Philippe Gautret, and Philippe Parola.

Their research has been published extensively in the following venues:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Travel Medicine and Infectious Disease
  • International Journal of Antimicrobial Agents
  • International Journal of Infectious Diseases
  • Journal of Medical Virology

Notable recent papers by Jean-Christophe Lagier include:

  • RETRACTED: Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial, 2020, International Journal of Antimicrobial Agents
  • Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial, 2020, bioRxiv (Cold Spring Harbor Laboratory)
  • Chloroquine and hydroxychloroquine as available weapons to fight COVID-19, 2020, International Journal of Antimicrobial Agents
  • Clinical and microbiological effect of a combination of hydroxychloroquine and azithromycin in 80 COVID-19 patients with at least a six-day follow up: A pilot observational study, 2020, Travel Medicine and Infectious Disease
  • Autoantibodies neutralizing type I IFNs are present in ~4% of uninfected individuals over 70 years old and account for ~20% of COVID-19 deaths, 2021, Science Immunology

Best Publications

  • Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial.

    Philippe Gautret;Jean Christophe Lagier;Philippe Parola;Van Thuan Hoang

  • Microbial culturomics: paradigm shift in the human gut microbiome study

    J. C. Lagier;Fabrice Armougom;M. Million;P. Hugon

  • Chloroquine and Hydroxychloroquine as Available Weapons to Fight COVID-19

    Philippe Colson;Jean-Marc Rolain;Jean-Christophe Lagier;Philippe Brouqui

  • Culture of previously uncultured members of the human gut microbiota by culturomics

    Jean-Christophe Lagier;Saber Khelaifia;Maryam Tidjani Alou;Sokhna Ndongo

  • Clinical and microbiological effect of a combination of hydroxychloroquine and azithromycin in 80 COVID-19 patients with at least a six-day follow up: A pilot observational study.

    Philippe Gautret;Jean Christophe Lagier;Philippe Parola;Van Thuan Hoang

  • Culturing the human microbiota and culturomics

    Jean-Christophe Lagier;Grégory Dubourg;Matthieu Million;Frédéric Cadoret

  • The Rebirth of Culture in Microbiology through the Example of Culturomics To Study Human Gut Microbiota

    Jean-Christophe Lagier;Perrine Hugon;Saber Khelaifia;Pierre-Edouard Fournier

  • Current and Past Strategies for Bacterial Culture in Clinical Microbiology

    Jean-Christophe Lagier;Sophie Edouard;Isabelle Pagnier;Oleg Mediannikov

  • Autoantibodies neutralizing type I IFNs are present in ~ 4% of uninfected individuals over 70 years old and account for ~ 20% of COVID-19 deaths.

    Paul Bastard;Adrian Gervais;Adrian Gervais;Tom Le Voyer;Tom Le Voyer;Jérémie Rosain;Jérémie Rosain

  • Early treatment of COVID-19 patients with hydroxychloroquine and azithromycin: A retrospective analysis of 1061 cases in Marseille, France.

    Matthieu Million;Jean Christophe Lagier;Philippe Gautret;Philippe Colson

  • Identification of Rare Pathogenic Bacteria in a Clinical Microbiology Laboratory: Impact of Matrix-Assisted Laser Desorption Ionization–Time of Flight Mass Spectrometry

    Piseth Seng;Cedric Abat;Jean Marc Rolain;Philippe Colson

  • A polyphasic strategy incorporating genomic data for the taxonomic description of novel bacterial species

    Dhamodharan Ramasamy;Ajay Kumar Mishra;Jean-Christophe Lagier;Roshan Padhmanabhan

  • Bacterial culture through selective and non-selective conditions: the evolution of culture media in clinical microbiology.

    Marion Bonnet;Jean Christophe Lagier;Didier Raoult;Saber Khelaifia

  • Human Gut Microbiota: Repertoire and Variations

    Jean Christophe Lagier;Matthieu Million;Perrine Hugon;Fabrice Armougom

  • Gut bacterial microbiota and obesity

    M. Million;J.-C. Lagier;D. Yahav;M. Paul

  • Gut microbiota diversity according to dietary habits and geographical provenance

    Bruno Senghor;Cheikh Sokhna;Raymond Ruimy;Jean-Christophe Lagier

  • Systemic Tropheryma whipplei: Clinical Presentation of 142 Patients With Infections Diagnosed or Confirmed in a Reference Center

    Jean-Christophe Lagier;Hubert Lepidi;Didier Raoult;Florence Fenollar

  • Outcomes of 3,737 COVID-19 patients treated with hydroxychloroquine/azithromycin and other regimens in Marseille, France: A retrospective analysis.

    Jean-Christophe Lagier;Matthieu Million;Philippe Gautret;Philippe Colson

  • The risk of COVID-19 death is much greater and age dependent with type I IFN autoantibodies

    Unknown

  • High-level colonisation of the human gut by Verrucomicrobia following broad-spectrum antibiotic treatment

    Grégory Dubourg;Jean-Christophe Lagier;Fabrice Armougom;Catherine Robert

  • Increased Gut Redox and Depletion of Anaerobic and Methanogenic Prokaryotes in Severe Acute Malnutrition

    Matthieu Million;Maryam Tidjani Alou;Saber Khelaifia;Dipankar Bachar

Frequent Co-Authors

Didier Raoult
Didier Raoult Aix-Marseille University
Pierre-Edouard Fournier
Pierre-Edouard Fournier Aix-Marseille University
Philippe Brouqui
Philippe Brouqui Aix-Marseille University
Catherine Robert
Catherine Robert Aix-Marseille University
Philippe Colson
Philippe Colson Aix-Marseille University
Philippe Parola
Philippe Parola Aix-Marseille University
Bernard La Scola
Bernard La Scola Aix-Marseille University
Anthony Levasseur
Anthony Levasseur University of Montreal
Jean-Marc Rolain
Jean-Marc Rolain Aix-Marseille University
Florence Fenollar
Florence Fenollar Centre national de la recherche scientifique, CNRS

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