World's Best Scientists 2026 revealed!
Malcolm R. Sears

Malcolm R. Sears

Award Badge
Microbiology
Canada
2026

D-Index & Metrics

Microbiology

D-Index
100
Citations
38032
World Ranking
404
National Ranking
9

Medicine

D-Index
110
Citations
51688
World Ranking
5493
National Ranking
214

Malcolm R. Sears 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 Malcolm R. Sears 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: 379 publications — 88th percentile

88% of scientists in this discipline score the same or lower.

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

Malcolm R. Sears 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 Malcolm R. Sears 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: 100 D-Index — 93rd percentile

93% 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

  • 2026 - Research.com Microbiology in Canada Leader Award
  • 2025 - Research.com Microbiology in Canada Leader Award
  • 2023 - Research.com Microbiology in Canada Leader Award
  • 2022 - Research.com Microbiology in Canada Leader Award

Overview

Malcolm R. Sears is affiliated with McMaster University in Canada. Their research primarily focuses on Medicine, with a substantial number of publications in various subfields including Physiology, Molecular Biology, Pulmonary and Respiratory Medicine, Health, Toxicology and Mutagenesis, and Nutrition and Dietetics.

The major topics addressed in Sears' work encompass gut microbiota and health, asthma and respiratory diseases, neonatal respiratory health research, pediatric health and respiratory diseases, infant nutrition and health, breastfeeding practices and influences, and air quality and health impacts.

Among recent publications, notable papers include the following:

  • Breastmilk Feeding Practices Are Associated with the Co-Occurrence of Bacteria in Mothers' Milk and the Infant Gut: the CHILD Cohort Study (2020), published in Cell Host & Microbe
  • Decreasing antibiotic use, the gut microbiota, and asthma incidence in children: evidence from population-based and prospective cohort studies (2020), published in The Lancet Respiratory Medicine
  • Bacteroides-dominant gut microbiome of late infancy is associated with enhanced neurodevelopment (2021), published in Gut Microbes
  • Maternal consumption of artificially sweetened beverages during pregnancy is associated with infant gut microbiota and metabolic modifications and increased infant body mass index (2020), published in Gut Microbes
  • Composition and Associations of the Infant Gut Fungal Microbiota with Environmental Factors and Childhood Allergic Outcomes (2021), published in mBio

Sears collaborates frequently with several co-authors, including Piush J. Mandhane, Theo J. Moraes, Padmaja Subbarao, Stuart E. Turvey, and Allan B. Becker, each contributing to numerous joint publications.

Key venues that frequently publish Sears' work include:

  • Journal of Allergy and Clinical Immunology
  • Pediatric Allergy and Immunology
  • Gut Microbes
  • bioRxiv (Cold Spring Harbor Laboratory)
  • ISEE Conference Abstracts

Best Publications

  • A gradient of childhood self-control predicts health, wealth, and public safety

    Terrie E. Moffitt;Louise Arseneault;Daniel Belsky;Nigel Dickson

  • Early infancy microbial and metabolic alterations affect risk of childhood asthma

    Marie-Claire Arrieta;Leah T. Stiemsma;Pedro A. Dimitriu;Lisa Thorson

  • An official American Thoracic Society/European Respiratory Society statement: asthma control and exacerbations: standardizing endpoints for clinical asthma trials and clinical practice.

    Helen K. Reddel;D. Robin Taylor;Eric D. Bateman;Louis-Philippe Boulet

  • A longitudinal, population-based, cohort study of childhood asthma followed to adulthood

    Malcolm R. Sears;Justina M. Greene;Andrew R. Willan;Elizabeth M. Wiecek

  • Association between children's experience of socioeconomic disadvantage and adult health: A life-course study.

    Richie Poulton;Avshalom Caspi;Avshalom Caspi;Barry J Milne;W Murray Thomson

  • Regular inhaled beta-agonist treatment in bronchial asthma

    M R Sears;D R Taylor;C G Print;D C Lake

  • Female and male antisocial trajectories: From childhood origins to adult outcomes

    Candice L Odgers;Terrie E Moffitt;Jonathan M Broadbent;Nigel Dickson

  • Gut microbiota of healthy Canadian infants: profiles by mode of delivery and infant diet at 4 months

    Meghan B. Azad;Theodore Konya;Heather Maughan;David S. Guttman

  • Relation between airway responsiveness and serum IgE in children with asthma and in apparently normal children.

    M R Sears;B Burrows;E M Flannery;G P Herbison

  • Long-term relation between breastfeeding and development of atopy and asthma in children and young adults: a longitudinal study

    Malcolm R Sears;Justina M Greene;Andrew R Willan;D Robin Taylor

  • Asthma: epidemiology, etiology and risk factors.

    Padmaja Subbarao;Piush J. Mandhane;Malcolm R. Sears

  • The relative risks of sensitivity to grass pollen, house dust mite and cat dander in the development of childhood asthma

    M. R. Sears;G. P. Herbison;M. D. Holdaway;C. J. Hewitt

  • A new perspective on concepts of asthma severity and control

    D. R. Taylor;E. D. Bateman;L.-P. Boulet;H. A. Boushey

  • Prediction of differential adult health burden by conduct problem subtypes in males.

    Candice L. Odgers;Avshalom Caspi;Jonathan M. Broadbent;Nigel Dickson

  • Induced Sputum Cell Counts in Healthy Adults

    Jose Belda;Richard Leigh;Krishnan Parameswaran;Paul M. O'byrne

  • Composition and Variation of the Human Milk Microbiota Are Influenced by Maternal and Early-Life Factors

    Shirin Moossavi;Shadi Sepehri;Bianca Robertson;Lars Bode

  • Infant gut microbiota and food sensitization: associations in the first year of life.

    M. B. Azad;T. Konya;D. S. Guttman;C. J. Field

  • The September epidemic of asthma exacerbations in children: A search for etiology

    Neil W. Johnston;Sebastian L. Johnston;Joanne M. Duncan;Justina M. Greene

  • Epidemiology of childhood asthma

    Malcolm R Sears

  • Overall asthma control: The relationship between current control and future risk

    Eric D. Bateman;Helen K. Reddel;Göran Eriksson;Göran Eriksson;Stefan Peterson

Frequent Co-Authors

Allan B. Becker
Allan B. Becker University of Manitoba
Stuart E. Turvey
Stuart E. Turvey University of British Columbia
Anita L. Kozyrskyj
Anita L. Kozyrskyj University of Alberta
Richie Poulton
Richie Poulton University of Otago
Catherine J. Field
Catherine J. Field University of Alberta
David S. Guttman
David S. Guttman University of Toronto
Jeffrey R. Brook
Jeffrey R. Brook University of Toronto
Paul M. O'Byrne
Paul M. O'Byrne McMaster University
Sonia S. Anand
Sonia S. Anand McMaster University
Terrie E. Moffitt
Terrie E. Moffitt Duke University

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Related Online Degrees & Career Pathways

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