World's Best Scientists 2026 revealed!

D-Index & Metrics

Microbiology

D-Index
84
Citations
36898
World Ranking
904
National Ranking
22

Medicine

D-Index
96
Citations
43204
World Ranking
9529
National Ranking
376

Mark Loeb 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 Mark Loeb 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: 264 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 233 scientists 205–214 publications: 207 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: 356 publications — 85th percentile

85% of scientists in this discipline score the same or lower.

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

Mark Loeb 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 Mark Loeb 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: 111 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 122 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: 93 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: 84 D-Index — 84th percentile

84% 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

  • 2020 - Fellow of the Royal Society of Canada Academy of Science

Overview

Mark Loeb is affiliated with McMaster University in Canada and has a research focus centered on medicine, particularly in infectious diseases, epidemiology, and pulmonary and respiratory medicine. Their work extensively covers the study of viral infections and respiratory conditions, with notable attention to SARS-CoV-2 and COVID-19.

Loeb has contributed to a significant number of publications, with their research appearing frequently in journals such as Clinical Infectious Diseases, Open Forum Infectious Diseases, Vaccine, Clinical Microbiology and Infection, and bioRxiv (Cold Spring Harbor Laboratory).

The scientist has collaborated regularly with several co-authors, including Dominik Mertz, Allison McGeer, Melissa K. Andrew, Shelly McNeil, and Chris P. Verschoor. These collaborations reflect a network of professionals active in infectious diseases research and related fields.

The main research topics covered by Mark Loeb include:

  • SARS-CoV-2 and COVID-19 Research
  • COVID-19 Clinical Research Studies
  • Respiratory viral infections research
  • Influenza Virus Research Studies
  • Pneumonia and Respiratory Infections
  • COVID-19 and healthcare impacts
  • Infection Control and Ventilation

Loeb's work extends to subfields such as infectious diseases, epidemiology, pulmonary and respiratory medicine, oncology, and immunology, illustrating a broad engagement with medical science.

Their recent notable papers include:

  • Physical distancing, face masks, and eye protection to prevent person-to-person transmission of SARS-CoV-2 and COVID-19: a systematic review and meta-analysis, 2020, The Lancet
  • Surviving Sepsis Campaign: guidelines on the management of critically ill adults with Coronavirus Disease 2019 (COVID-19), 2020, Intensive Care Medicine
  • Surviving Sepsis Campaign: Guidelines on the Management of Critically Ill Adults with Coronavirus Disease 2019 (COVID-19), 2020, Critical Care Medicine
  • Drug treatments for covid-19: living systematic review and network meta-analysis, 2020, BMJ
  • Clinical Course and Molecular Viral Shedding Among Asymptomatic and Symptomatic Patients With SARS-CoV-2 Infection in a Community Treatment Center in the Republic of Korea, 2020, JAMA Internal Medicine

In recognition of their contributions to science, Mark Loeb was named a Fellow of the Royal Society of Canada in 2020 by the Academy of Science.

Best Publications

  • Surviving Sepsis Campaign: Guidelines on the Management of Critically Ill Adults with Coronavirus Disease 2019 (COVID-19).

    Waleed Alhazzani;Morten Hylander Møller;Yaseen M. Arabi;Mark Loeb

  • Physical distancing, face masks, and eye protection to prevent person-to-person transmission of SARS-CoV-2 and COVID-19: a systematic review and meta-analysis.

    Derek K Chu;Elie A Akl;Elie A Akl;Stephanie Duda;Karla Solo

  • Newcastle-Ottawa Scale: comparing reviewers’ to authors’ assessments

    Carson Ka-Lok Lo;Dominik Mertz;Mark Loeb

  • Drug treatments for covid-19: living systematic review and network meta-analysis.

    Reed Ac Siemieniuk;Jessica J Bartoszko;Long Ge;Dena Zeraatkar

  • Aging, frailty and age-related diseases

    T. Fulop;A. Larbi;A. Larbi;J. M. Witkowski;J. McElhaney;J. McElhaney

  • Populations at risk for severe or complicated influenza illness: systematic review and meta-analysis

    Dominik Mertz;Tae Hyong Kim;Jennie Johnstone;Po-Po Lam;Po-Po Lam

  • Surgical mask vs N95 respirator for preventing influenza among health care workers: a randomized trial.

    Mark Loeb;Nancy Dafoe;James Mahony;Michael John

  • Clinical Course and Molecular Viral Shedding Among Asymptomatic and Symptomatic Patients With SARS-CoV-2 Infection in a Community Treatment Center in the Republic of Korea.

    Seungjae Lee;Tark Kim;Eunjung Lee;Cheolgu Lee

  • Medical masks vs N95 respirators for preventing COVID-19 in healthcare workers: A systematic review and meta-analysis of randomized trials.

    Jessica J. Bartoszko;Mohammed Abdul Malik Farooqi;Waleed Alhazzani;Mark Loeb

  • SARS among critical care nurses, Toronto.

    Mark Loeb;Allison McGeer;Bonnie Henry;Marianna Ofner

  • Probiotics for the Prevention of Clostridium difficile–Associated Diarrhea: A Systematic Review and Meta-analysis

    Bradley C Johnston;Stephanie S Y Ma;Joshua Z Goldenberg;Kristian Thorlund

  • Development of Minimum Criteria for the Initiation of Antibiotics in Residents of Long-Term–Care Facilities: Results of a Consensus Conference

    Mark Loeb;David W. Bentley;Suzanne Bradley;Kent Crossley

  • Vitamin D supplementation to prevent acute respiratory infections: a systematic review and meta-analysis of aggregate data from randomised controlled trials.

    David A Jolliffe;Carlos A Camargo;John D Sluyter;Mary Aglipay

  • Effect of Influenza Vaccination of Children on Infection Rates in Hutterite Communities: A Randomized Trial

    Mark Loeb;Margaret L. Russell;Lorraine Moss;Kevin Fonseca

  • Risk factors for pneumonia and other lower respiratory tract infections in elderly residents of long-term care facilities.

    Mark Loeb;Allison McGeer;Margaret McArthur;Stephen Walter

  • Comparing influenza vaccine efficacy against mismatched and matched strains: a systematic review and meta-analysis

    Andrea C Tricco;Ayman Chit;Ayman Chit;Charlene Soobiah;David Hallett

  • Functional role of M2 and M3 muscarinic receptors in the urinary bladder of rats in vitro and in vivo

    S. S. Hegde;A. Choppin;D. Bonhaus;S. Briaud

  • Corticosteroid Therapy for Patients Hospitalized With Community-Acquired Pneumonia: A Systematic Review and Meta-analysis.

    Reed A.C. Siemieniuk;Maureen O. Meade;Pablo Alonso-Coello;Matthias Briel

  • Interferon-Mediated Immunopathological Events Are Associated with Atypical Innate and Adaptive Immune Responses in Patients with Severe Acute Respiratory Syndrome

    Mark J. Cameron;Longsi Ran;Luoling Xu;Ali Danesh

  • Surviving Sepsis Campaign Guidelines on the Management of Adults With Coronavirus Disease 2019 (COVID-19) in the ICU: First Update.

    Waleed Alhazzani;Laura Evans;Fayez Alshamsi;Morten Hylander Møller

  • Surgical Mask vs N95 Respirator for Preventing Influenza Among Health Care Workers

    Mark Loeb;Nancy Dafoe;James Mahony;Michael John

Frequent Co-Authors

Allison McGeer
Allison McGeer University of Toronto
Andrew E. Simor
Andrew E. Simor Sunnybrook Health Science Centre
Stephen D. Walter
Stephen D. Walter McMaster University
Shelly A. McNeil
Shelly A. McNeil Dalhousie University
Marek Smieja
Marek Smieja McMaster University
Janet E. McElhaney
Janet E. McElhaney Health Sciences North
Guy Boivin
Guy Boivin Université Laval
Jonathan L. Bramson
Jonathan L. Bramson McMaster University
Dawn M. E. Bowdish
Dawn M. E. Bowdish McMaster University
Tony Mazzulli
Tony Mazzulli University Health Network

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