World's Best Scientists 2026 revealed!

D-Index & Metrics

Microbiology

D-Index
108
Citations
41963
World Ranking
266
National Ranking
122

Medicine

D-Index
109
Citations
44678
World Ranking
5769
National Ranking
3101

John D. Clemens 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 John D. Clemens 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: 532 publications — 96th percentile

96% of scientists in this discipline score the same or lower.

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

John D. Clemens 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 John D. Clemens 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: 108 D-Index — 95th percentile

95% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2018 - Prince Mahidol Award
  • 2010 - Albert B. Sabin Gold Medal, Sabin Vaccine Institute
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa

Overview

John D. Clemens is affiliated with the University of California, Los Angeles in the United States. Their research primarily spans the fields of Medicine and Biochemistry, Genetics and Molecular Biology, with a particular focus on subfields such as Endocrinology, Infectious Diseases, Food Science, Health, and Pulmonary and Respiratory Medicine.

The main topics addressed in their work include Vibrio bacteria research studies, Salmonella and Campylobacter epidemiology, viral gastroenteritis research and epidemiology, SARS-CoV-2 and COVID-19 research, vaccine coverage and hesitancy, antibiotic resistance in bacteria, and COVID-19 clinical research studies.

Frequent publication venues in which Clemens has contributed include bioRxiv (Cold Spring Harbor Laboratory), PLoS Neglected Tropical Diseases, UNC Libraries, The Lancet Global Health, and PLoS ONE.

Several coauthors have frequently collaborated with Clemens. These include Firdausi Qadri, Farhana Khanam, Andrew J. Pollard, and Tahmeed Ahmed.

Examples of Clemens's recent papers are:

  • A Community-Based Intervention for Managing Hypertension in Rural South Asia, 2020, New England Journal of Medicine
  • Protection by vaccination of children against typhoid fever with a Vi-tetanus toxoid conjugate vaccine in urban Bangladesh: a cluster-randomised trial, 2021, The Lancet
  • Global diversity and antimicrobial resistance of typhoid fever pathogens: Insights from a meta-analysis of 13,000 Salmonella Typhi genomes, 2023, eLife
  • Acute food insecurity and short-term coping strategies of urban and rural households of Bangladesh during the lockdown period of COVID-19 pandemic of 2020: report of a cross-sectional survey, 2020, BMJ Open
  • Antibody responses after COVID-19 infection in patients who are mildly symptomatic or asymptomatic in Bangladesh, 2020, International Journal of Infectious Diseases

Throughout their career, Clemens has received several awards, including the Prince Mahidol Award in 2018, the Albert B. Sabin Gold Medal from the Sabin Vaccine Institute in 2010, and was recognized as a Fellow of the Royal Society of South Africa.

Best Publications

  • Global Burden of Shigella Infections: Implications for Vaccine Development and Implementation of Control Strategies

    K. L. Kotloff;J. P. Winickoff;B. Ivanoff;J. D. Clemens

  • Vaccination greatly reduces disease, disability, death and inequity worldwide.

    FE Andre;R Booy;HL Bock;J Clemens

  • The protective efficacy of polyvalent pneumococcal polysaccharide vaccine.

    Eugene D. Shapiro;Anne T. Berg;Robert Austrian;Donna Schroeder

  • Evidence for several waves of global transmission in the seventh cholera pandemic

    Ankur Mutreja;Dong Wook Kim;Dong Wook Kim;Nicholas R Thomson;Thomas R Connor

  • Trial of Calcium to Prevent Preeclampsia

    Richard J. Levine;John C. Hauth;Luis B. Curet;Baha M. Sibai

  • A study of typhoid fever in five asian countries: disease burden and implications for controls

    R Leon Ochiai;Camilo J Acosta;M Carolina Danovaro-Holliday;Dong Baiqing

  • The global burden of cholera

    Mohammad Ali;Anna Lena Lopez;Young Ae You;Young Eun Kim

  • Looking beyond COVID-19 vaccine phase 3 trials.

    Jerome H. Kim;Florian Marks;Florian Marks;Florian Marks;John D. Clemens;John D. Clemens

  • Field trial of oral cholera vaccines in Bangladesh: results from three-year follow-up

    J.D Clemens;D.A Sack;J.R Harris;F van Loon

  • A multicentre study of Shigella diarrhoea in six Asian countries: disease burden, clinical manifestations, and microbiology.

    Lorenz von Seidlein;Deok Ryun Kim;Mohammad Ali;Hyejon Lee

  • Typhoid fever in children aged less than 5 years

    Anju Sinha;Sunil Sazawal;Sunil Sazawal;Ramesh Kumar;Seema Sood

  • Cross-Protection by B Subunit-Whole Cell Cholera Vaccine Against Diarrhea Associated with Heat-Labile Toxin-Producing Enterotoxigenic Escherichia coli: Results of a Large-Scale Field Trial

    John D. Clemens;David A. Sack;Jeffrey R. Harris;J. Chakraborty

  • Helicobacter in the developing world

    Robert W. Frenck;John Clemens

  • Field trial of oral cholera vaccines in Bangladesh

    John D. Clemens;Jeffrey R. Harris;Jeffrey R. Harris;M. R. Khan;Bradford A. Kay;Bradford A. Kay

  • The Global Enteric Multicenter Study (GEMS) of Diarrheal Disease in Infants and Young Children in Developing Countries: Epidemiologic and Clinical Methods of the Case/Control Study

    Karen L. Kotloff;William C. Blackwelder;Dilruba Nasrin;James P. Nataro

  • Herd immunity conferred by killed oral cholera vaccines in Bangladesh: a reanalysis.

    Mohammad Ali;Michael Emch;Lorenz von Seidlein;Mohammad Yunus

  • Cholera

    Unknown

  • Incidence of invasive salmonella disease in sub-Saharan Africa: a multicentre population-based surveillance study

    Florian Marks;Vera von Kalckreuth;Peter Aaby;Yaw Adu-Sarkodie

  • A Controlled Evaluation of the Protective Efficacy of Pneumococcal Vaccine for Patients at High Risk of Serious Pneumococcal Infections

    Eugene D. Shapiro;John D. Clemens

  • Effectiveness of Mass Oral Cholera Vaccination in Beira, Mozambique

    Marcelino E.S. Lucas;Jacqueline L. Deen;Lorenz Von Seidlein;Xuan Yi Wang

  • Serum Cotinine Concentration and Self-reported Smoking during Pregnancy

    Mark A. Klebanoff;Richard J. Levine;John D. Clemens;Rebecca DerSimonian

  • Maternal Smoking, Alcohol Drinking, Caffeine Consumption, and Fetal Growth: Results from a Prospective Study

    Xiao Ou Shu;Maureen C. Hatch;James Mills;John Clemens

Frequent Co-Authors

Lorenz von Seidlein
Lorenz von Seidlein Mahidol University
Thomas F. Wierzba
Thomas F. Wierzba Wake Forest University
David A. Sack
David A. Sack Johns Hopkins University
Firdausi Qadri
Firdausi Qadri International Centre for Diarrhoeal Disease Research
Sujit K. Bhattacharya
Sujit K. Bhattacharya Indian Council of Medical Research
Zulfiqar A Bhutta
Zulfiqar A Bhutta Aga Khan University
Ashraful Islam Khan
Ashraful Islam Khan International Centre for Diarrhoeal Disease Research
Jan Holmgren
Jan Holmgren University of Gothenburg
Stephen Baker
Stephen Baker Agency for Science, Technology and Research
Michael Emch
Michael Emch University of North Carolina at Chapel Hill

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