World's Best Scientists 2026 revealed!

D-Index & Metrics

Microbiology

D-Index
65
Citations
16272
World Ranking
2496
National Ranking
1013

John A. Ellis 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 A. Ellis 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: 200 publications — 49th percentile

49% of scientists in this discipline score the same or lower.

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

John A. Ellis 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 A. Ellis 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: 65 D-Index — 55th percentile

55% of scientists in this discipline score the same or lower.

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

Overview

John A. Ellis is affiliated with Western University of Health Sciences in the United States. Their research contributions span multiple fields within medicine, immunology, and microbiology, focusing on infectious diseases, epidemiology, and related subfields.

Ellis's recent publications include:

  • Canine IgA: Immunity in the Respiratory Tract, With or Without You (2020) in Advances in Small Animal Medicine and Surgery
  • COVID-19: Is It Raining (on) Cats and Dogs? (2020) in Advances in Small Animal Medicine and Surgery
  • Microbial communities and tight junction protein expression in the gastrointestinal tract of feedlot cattle (2025) in Scientific Reports

The scientist's frequent co-authors are:

  • Victor S. Cortese
  • G Duhamel
  • Robert W. Fulton
  • Dwight D. Bowman
  • Barbara A. Byrne

Ellis has published primarily in the venues:

  • Advances in Small Animal Medicine and Surgery
  • Scientific Reports

The main fields of study for Ellis's research comprise:

  • Medicine
  • Immunology and Microbiology

The research further investigates specific subfields including:

  • Infectious Diseases
  • Epidemiology
  • Agronomy and Crop Science
  • Microbiology
  • Immunology

The key topics covered in Ellis's work include:

  • Viral gastroenteritis research and epidemiology
  • Animal Disease Management and Epidemiology
  • Microbial infections and disease research
  • Immunodeficiency and Autoimmune Disorders
  • Respiratory viral infections research
  • Diabetes and associated disorders
  • SARS-CoV-2 and COVID-19 Research

Best Publications

  • Porcine circoviruses: a review.

    Gordon M. Allan;John A. Ellis

  • Isolation of Porcine Circovirus-like Viruses from Pigs with a Wasting Disease in the USA and Europe:

    G. M. Allan;F. McNeilly;S. Kennedy;B. Daft

  • Isolation of circovirus from lesions of pigs with postweaning multisystemic wasting syndrome.

    J Ellis;L Hassard;E Clark;J Harding

  • Characterization of novel circovirus DNAs associated with wasting syndromes in pigs.

    Brian M. Meehan;Francis McNeilly;Daniel Todd;Seamus Kennedy

  • Experimental infection of colostrum deprived piglets with porcine circovirus 2 (PCV2) and porcine reproductive and respiratory syndrome virus (PRRSV) potentiates PCV2 replication.

    G. M. Allan;F. McNeilly;J. Ellis;S. Krakowka

  • Reproduction of Lesions of Postweaning Multisystemic Wasting Syndrome in Gnotobiotic Piglets

    John Ellis;Steven Krakowka;Michael Dale Lairmore;Deborah Haines

  • Reproduction of lesions of postweaning multisystemic wasting syndrome by infection of conventional pigs with porcine circovirus type 2 alone or in combination with porcine parvovirus.

    S Kennedy;D Moffett;F McNeilly;B Meehan

  • Activation of the Immune System is the Pivotal Event in the Production of Wasting Disease in Pigs Infected with Porcine Circovirus-2 (PCV-2)

    S. Krakowka;J. A. Ellis;F. McNeilly;S. Ringler

  • Myocarditis and abortion associated with intrauterine infection of sows with porcine circovirus 2.

    Keith H. West;Janet M. Bystrom;Chris Wojnarowicz;Neil Shantz

  • PCV-2 genotype definition and nomenclature

    J. Segales;A. Olvera;L. Grau-Roma;C. Charreyre

  • Coinfection by porcine circoviruses and porcine parvovirus in pigs with naturally acquired postweaning multisystemic wasting syndrome.

    J. A. Ellis;A. Bratanich;E. G. Clark;G. Allan

  • Reproduction of postweaning multisystemic wasting syndrome (PMWS) in immunostimulated and non-immunostimulated 3-week-old piglets experimentally infected with porcine circovirus type 2 (PCV2).

    A.S. Ladekjær-Mikkelsen;Jens Nielsen;T. Stadejek;Torben Storgaard

  • Development and application of a competitive enzyme-linked immunosorbent assay for the detection of serum antibodies to porcine circovirus type 2.

    Ian W. Walker;Carrie A. Konoby;Victoria A. Jewhurst;Irene McNair

  • Novel porcine circoviruses from pigs with wasting disease syndromes.

    G. Allan;B. Meehan;D. Todd;S. Kennedy

  • Multiple porcine circovirus 2-associated abortions and reproductive failure in a multisite swine production unit.

    B O'Connor;H Gauvreau;K West;J Bogdan

  • Porcine circovirus-2 and concurrent infections in the field.

    J Ellis;E Clark;D Haines;K West

  • In vitro studies on the infection and replication of porcine circovirus type 2 in cells of the porcine immune system.

    D.F. Gilpin;K. McCullough;B.M. Meehan;F. McNeilly

  • Isolation and characterization of porcine circovirus 2 from cases of sow abortion and porcine dermatitis and nephropathy syndrome.

    B. M. Meehan;F. McNeilly;I. McNair;I. Walker

  • Effect of coinfection with genogroup 1 porcine torque teno virus on porcine circovirus type 2-associated postweaning multisystemic wasting syndrome in gnotobiotic pigs.

    John A. Ellis;Gordon Allan;Steven Krakowka

  • Production, characterisation and applications of monoclonal antibodies to porcine circovirus 2.

    F. McNeilly;I. McNair;D. P. Mackie;B. M. Meehan

Frequent Co-Authors

Gordon Allan
Gordon Allan Queen's University Belfast
Steven Krakowka
Steven Krakowka The Ohio State University
Deborah M. Haines
Deborah M. Haines Western University of Health Sciences
Brian Meehan
Brian Meehan Commonwealth Scientific and Industrial Research Organisation
Cheryl L. Waldner
Cheryl L. Waldner University of Saskatchewan
Paul S. Morley
Paul S. Morley Texas A&M University
Helene F. Rosenberg
Helene F. Rosenberg National Institute of Allergy and Infectious Diseases
Joseph B. Domachowske
Joseph B. Domachowske SUNY Upstate Medical University
Per Wallgren
Per Wallgren National Veterinary Institute
Kenneth C. McCullough
Kenneth C. McCullough University of Bern

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