World's Best Scientists 2026 revealed!
Thomas J. Louie

Thomas J. Louie

D-Index & Metrics

Microbiology

D-Index
61
Citations
18403
World Ranking
2954
National Ranking
84

Thomas J. Louie 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 Thomas J. Louie 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: 141 publications — 21st percentile

21% of scientists in this discipline score the same or lower.

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

Thomas J. Louie 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 Thomas J. Louie 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: 61 D-Index — 47th percentile

47% of scientists in this discipline score the same or lower.

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

Overview

Thomas J. Louie is affiliated with the University of Calgary in Canada, focusing on research in medicine with a particular emphasis on infectious diseases. Their contributions span critical subfields including infectious diseases, molecular biology, critical care and intensive care medicine, epidemiology, and gastroenterology.

Louie's research addresses core topics such as Clostridium difficile and Clostridium perfringens infections, gut microbiota and health, nosocomial infections in intensive care units, microscopic colitis, gastrointestinal motility and disorders, Helicobacter pylori-related gastroenterology studies, and viral gastroenteritis research and epidemiology.

Frequent coauthors in Louie's work include Sahil Khanna, Lisa Von Moltke, Paul Feuerstadt, John Conly, and Darrell S. Pardi, indicating collaborative work within infectious diseases and gastroenterology research communities.

The scientist has published extensively in several key venues, with multiple publications appearing in Gastroenterology, Open Forum Infectious Diseases, The American Journal of Gastroenterology, Infection Control and Hospital Epidemiology, and JAMA.

  • Efficacy and Safety of RBX2660 in PUNCH CD3, a Phase III, Randomized, Double-Blind, Placebo-Controlled Trial with a Bayesian Primary Analysis for the Prevention of Recurrent Clostridioides difficile Infection (2022, Drugs)
  • VE303, a Defined Bacterial Consortium, for Prevention of Recurrent Clostridioides difficile Infection (2023, JAMA)
  • Metabolic independence drives gut microbial colonization and resilience in health and disease (2023, Genome Biology)
  • Safety and Tolerability of SER-109 as an Investigational Microbiome Therapeutic in Adults With Recurrent Clostridioides difficile Infection (2023, JAMA Network Open)
  • Detection and quantification of infectious severe acute respiratory coronavirus-2 in diverse clinical and environmental samples (2022, Scientific Reports)

Best Publications

  • Fidaxomicin versus Vancomycin for Clostridium difficile Infection

    Thomas J. Louie;Mark A. Miller;Kathleen M. Mullane;Karl Weiss

  • Novel Multiplex PCR Assay for Characterization and Concomitant Subtyping of Staphylococcal Cassette Chromosome mec Types I to V in Methicillin-Resistant Staphylococcus aureus

    Kunyan Zhang;Jo-Ann McClure;Sameer Elsayed;Thomas Louie

  • Treating Clostridium difficile Infection With Fecal Microbiota Transplantation

    Johan S. Bakken;Thomas Borody;Lawrence J. Brandt;Joel V. Brill

  • Emergence and global spread of epidemic healthcare-associated Clostridium difficile.

    Miao He;Fabio Miyajima;Paul Roberts;Louise Ellison

  • Effect of Oral Capsule- vs Colonoscopy-Delivered Fecal Microbiota Transplantation on Recurrent Clostridium difficile Infection: A Randomized Clinical Trial.

    Dina Kao;Brandi Roach;Marisela Silva;Paul Beck

  • Vancomycin, Metronidazole, or Tolevamer for Clostridium difficile Infection: Results From Two Multinational, Randomized, Controlled Trials

    Stuart Johnson;Thomas J. Louie;Dale N. Gerding;Oliver A. Cornely

  • A human gut bacterial genome and culture collection for improved metagenomic analyses.

    Samuel C. Forster;Samuel C. Forster;Samuel C. Forster;Nitin Kumar;Blessing O. Anonye;Blessing O. Anonye;Alexandre Almeida;Alexandre Almeida

  • New Quadriplex PCR Assay for Detection of Methicillin and Mupirocin Resistance and Simultaneous Discrimination of Staphylococcus aureus from Coagulase-Negative Staphylococci

    Kunyan Zhang;Jennifer Sparling;Barbara L. Chow;Sameer Elsayed

  • Microbial synergy in experimental intra-abdominal abscess.

    Andrew B. Onderdonk;John G. Bartlett;Thomas Louie;Nadine Sullivan-Seigler

  • Treatment of first recurrence of Clostridium difficile infection: fidaxomicin versus vancomycin.

    Oliver A. Cornely;Mark A. Miller;Thomas J. Louie;Derrick W. Crook;Derrick W. Crook

  • Novel Multiplex PCR Assay for Detection of the Staphylococcal Virulence Marker Panton-Valentine Leukocidin Genes and Simultaneous Discrimination of Methicillin-Susceptible from -Resistant Staphylococci

    Jo-Ann McClure;John M. Conly;Vicky Lau;Sameer Elsayed

  • Fidaxomicin Preserves the Intestinal Microbiome During and After Treatment of Clostridium difficile Infection (CDI) and Reduces Both Toxin Reexpression and Recurrence of CDI

    Thomas J. Louie;Kris Cannon;Brendan Byrne;Judy Emery

  • Efficacy of Fidaxomicin Versus Vancomycin as Therapy for Clostridium difficile Infection in Individuals Taking Concomitant Antibiotics for Other Concurrent Infections

    Kathleen M. Mullane;Mark A. Miller;Karl Weiss;Arnold Lentnek

  • A new macrocyclic antibiotic, fidaxomicin (OPT-80), causes less alteration to the bowel microbiota of Clostridium difficile-infected patients than does vancomycin

    Gerald W. Tannock;Karen Munro;Corinda Taylor;Blair Lawley

  • Fidaxomicin versus vancomycin for Clostridium difficile infection: meta-analysis of pivotal randomized controlled trials.

    Derrick W. Crook;Derrick W. Crook;A. Sarah Walker;A. Sarah Walker;Yin Kean;Karl Weiss

  • Aerobic and Anaerobic Bacteria in Diabetic Foot Ulcers

    Thomas J. Louie;John G. Bartlett;Francis P. Tally;Sherwood L. Gorbach

  • OPT-80 eliminates Clostridium difficile and is sparing of bacteroides species during treatment of C. difficile infection.

    Thomas J. Louie;Judy Emery;Walter Krulicki;Brendan Byrne

  • Outbreak in Alberta of community-acquired (USA300) methicillin-resistant Staphylococcus aureus in people with a history of drug use, homelessness or incarceration

    Mark Gilbert;Judy MacDonald;Dan Gregson;Jennifer Siushansian

  • Tolevamer, a Novel Nonantibiotic Polymer, Compared with Vancomycin in the Treatment of Mild to Moderately Severe Clostridium difficile–Associated Diarrhea

    Thomas J. Louie;Jennifer Peppe;C. Kevin Watt;David Johnson

  • Nosocomial Outbreak of Carbapenem-Resistant Pseudomonas aeruginosa with a New blaIMP Allele, blaIMP-7

    Alan Patrick Gibb;Chanwit Tribuddharat;Richard A. Moore;Thomas J. Louie

  • Incidence and risk factors for acquiring nosocomial urinary tract infection in the critically ill

    Kevin B. Laupland;David A. Zygun;David A. Zygun;H.Dele Davies;Deirdre L. Church;Deirdre L. Church

Frequent Co-Authors

Sherwood L. Gorbach
Sherwood L. Gorbach Tufts University
Derrick W. Crook
Derrick W. Crook University of Oxford
Oliver A. Cornely
Oliver A. Cornely University of Cologne
Dale N. Gerding
Dale N. Gerding Veterans Health Administration
Paul L. Beck
Paul L. Beck University of Calgary
Kevin B. Laupland
Kevin B. Laupland Queensland University of Technology
Mark A. Miller
Mark A. Miller University of California San Francisco Medical Center
Deirdre L. Church
Deirdre L. Church University of Calgary
Mark W. Miller
Mark W. Miller Boston University
Carl Erik Nord
Carl Erik Nord Karolinska University Hospital

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