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

Jean-Christophe Lagier

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Microbiology 74 1536 1391 87 80 407 29084

Jean-Christophe Lagier publications per year

The chart shows the history of publications by Jean-Christophe Lagier between 2008 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Jean-Christophe Lagier published across 18 years, from 2008 to 2025, averaging 26.8 papers a year. Output peaked at 63 publications in 2021. 33 of the 483 publications appeared in the last two years.

No. of publications
20 40 60
Bar chart. Horizontal axis: year, 2008 to 2025. Vertical axis: number of publications, 0 to 63. Peak 63 publications in 2021. 2008: 1 publication 2009: 5 publications 2010: 8 publications 2011: 3 publications 2012: 16 publications 2013: 27 publications 2014: 29 publications 2015: 32 publications 2016: 47 publications 2017: 41 publications 2018: 34 publications 2019: 35 publications 2020: 58 publications 2021: 63 publications 2022: 34 publications 2023: 17 publications 2024: 17 publications 2025: 16 publications
2008 2025

483 publications in total across all disciplines

View publications per year as a table
Jean-Christophe Lagier: publications per year, 2008 to 2025
Year Publications
2008 1
2009 5
2010 8
2011 3
2012 16
2013 27
2014 29
2015 32
2016 47
2017 41
2018 34
2019 35
2020 58
2021 63
2022 34
2023 17
2024 17
2025 16
Total 483
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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.

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 405–414 publications, is where this scientist sits. 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
55–64 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.

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253
175–184 276
185–194 190
195–204 234
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146
265–274 139
275–284 148
285–294 115
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36 407
415–424 35
425–434 29
435–444 33
445–454 34
455–464 25
465–474 26
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99
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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.

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 74 D-Index, is where this scientist sits. 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.

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80 74
75 66
76 87
77 60
78 73
79 59
80 57
81 55
82 47
83 77
84 50
85 45
86 42
87 41
88 32
89 38
90 35
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21
99 22
100 30
101 16
102 20
103 17
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
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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

  • 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

  • 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

  • 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

  • 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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