World's Best Scientists 2026 revealed!

D-Index & Metrics

Immunology

D-Index
44
Citations
13569
World Ranking
4743
National Ranking
2134

Allan J. Zajac publication distribution in Immunology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Immunology in 2026. The highlighted bar marks where Allan J. Zajac sits on this spectrum.

62–71 publications: 9 scientists 72–81 publications: 23 scientists 82–91 publications: 40 scientists 92–101 publications: 72 scientists 102–111 publications: 86 scientists 112–121 publications: 108 scientists 122–131 publications: 150 scientists 132–141 publications: 160 scientists 142–151 publications: 159 scientists 152–161 publications: 189 scientists 162–171 publications: 166 scientists 172–181 publications: 181 scientists 182–191 publications: 188 scientists 192–201 publications: 187 scientists 202–211 publications: 178 scientists 212–221 publications: 158 scientists 222–231 publications: 168 scientists 232–241 publications: 159 scientists 242–251 publications: 160 scientists 252–261 publications: 148 scientists 262–271 publications: 116 scientists 272–281 publications: 125 scientists 282–291 publications: 115 scientists 292–301 publications: 111 scientists 302–311 publications: 95 scientists 312–321 publications: 97 scientists 322–331 publications: 97 scientists 332–341 publications: 99 scientists 342–351 publications: 96 scientists 352–361 publications: 68 scientists 362–371 publications: 76 scientists 372–381 publications: 71 scientists 382–391 publications: 71 scientists 392–401 publications: 62 scientists 402–411 publications: 54 scientists 412–421 publications: 41 scientists 422–431 publications: 63 scientists 432–441 publications: 53 scientists 442–451 publications: 31 scientists 452–461 publications: 42 scientists 462–471 publications: 40 scientists 472–481 publications: 29 scientists 482–491 publications: 34 scientists 492–501 publications: 30 scientists 502–511 publications: 23 scientists 512–521 publications: 41 scientists 522–531 publications: 29 scientists 532–541 publications: 28 scientists 542–551 publications: 16 scientists 552–561 publications: 18 scientists 562–571 publications: 18 scientists 572–581 publications: 17 scientists 582–591 publications: 17 scientists 592–601 publications: 17 scientists 602–611 publications: 19 scientists 612–621 publications: 13 scientists 622–631 publications: 12 scientists 632–641 publications: 11 scientists 642–651 publications: 16 scientists 652–661 publications: 9 scientists 662–671 publications: 5 scientists 672–681 publications: 13 scientists 682–691 publications: 12 scientists 692–701 publications: 6 scientists 702–711 publications: 6 scientists 712–721 publications: 9 scientists 722–731 publications: 9 scientists 732–741 publications: 6 scientists 742–751 publications: 11 scientists 752–761 publications: 10 scientists 762–771 publications: 7 scientists 772–781 publications: 12 scientists 782–791 publications: 7 scientists 792–801 publications: 5 scientists 802–806 publications: 1 scientists 807+ publications: 100 scientists
62 publications 807+

This scientist: 142 publications — 13th percentile

13% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 807 publications or more.

Allan J. Zajac D-index placement in Immunology in 2026

The chart shows the D-index (discipline H-index) distribution of Immunology scientists ranked by Research.com in 2026. The highlighted bar marks where Allan J. Zajac sits on this spectrum.

40–41 D-Index: 28 scientists 42–43 D-Index: 91 scientists 44–45 D-Index: 157 scientists 46–47 D-Index: 192 scientists 48–49 D-Index: 175 scientists 50–51 D-Index: 188 scientists 52–53 D-Index: 177 scientists 54–55 D-Index: 155 scientists 56–57 D-Index: 194 scientists 58–59 D-Index: 201 scientists 60–61 D-Index: 197 scientists 62–63 D-Index: 201 scientists 64–65 D-Index: 173 scientists 66–67 D-Index: 167 scientists 68–69 D-Index: 172 scientists 70–71 D-Index: 199 scientists 72–73 D-Index: 184 scientists 74–75 D-Index: 133 scientists 76–77 D-Index: 162 scientists 78–79 D-Index: 127 scientists 80–81 D-Index: 121 scientists 82–83 D-Index: 125 scientists 84–85 D-Index: 121 scientists 86–87 D-Index: 102 scientists 88–89 D-Index: 96 scientists 90–91 D-Index: 75 scientists 92–93 D-Index: 72 scientists 94–95 D-Index: 74 scientists 96–97 D-Index: 66 scientists 98–99 D-Index: 68 scientists 100–101 D-Index: 49 scientists 102–103 D-Index: 60 scientists 104–105 D-Index: 54 scientists 106–107 D-Index: 36 scientists 108–109 D-Index: 23 scientists 110–111 D-Index: 52 scientists 112–113 D-Index: 41 scientists 114–115 D-Index: 34 scientists 116–117 D-Index: 25 scientists 118–119 D-Index: 28 scientists 120–121 D-Index: 11 scientists 122–123 D-Index: 20 scientists 124–125 D-Index: 27 scientists 126–127 D-Index: 19 scientists 128–129 D-Index: 20 scientists 130–131 D-Index: 16 scientists 132–133 D-Index: 17 scientists 134–135 D-Index: 14 scientists 136–137 D-Index: 15 scientists 138–139 D-Index: 9 scientists 140–141 D-Index: 11 scientists 142–143 D-Index: 9 scientists 144–145 D-Index: 9 scientists 146–147 D-Index: 7 scientists 148–149 D-Index: 7 scientists 150–151 D-Index: 7 scientists 152–153 D-Index: 5 scientists 154–155 D-Index: 8 scientists 156 D-Index: 6 scientists 157+ D-Index: 96 scientists
40 D-Index 157+

This scientist: 44 D-Index — 4th percentile

4% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 157 D-Index or more.

Overview

Allan J. Zajac is affiliated with the University of Alabama at Birmingham in the United States. Their research primarily spans the fields of immunology and microbiology, with additional work in medicine. Subfields include immunology, oncology, epidemiology, infectious diseases, and genetics.

Their research topics encompass:

  • Immune cell function and interaction
  • T-cell and B-cell immunology
  • Immunotherapy and immune responses
  • CAR-T cell therapy research
  • Cytomegalovirus and herpesvirus research
  • Blood disorders and treatments
  • Viral infections and immunology research

Zajac has contributed to a number of publications, with a frequent presence in venues such as The Journal of Immunology, UNC Libraries, Immunity, Science Advances, and Science Immunology. Their most recent papers include:

  • "Gfi1 controls the formation of effector-like CD8+ T cells during chronic infection and cancer," 2025, Nature Communications
  • "Tfh-cell-derived interleukin 21 sustains effector CD8+ T cell responses during chronic viral infection," 2022, Immunity
  • "Intrinsic IL-2 production by effector CD8 T cells affects IL-2 signaling and promotes fate decisions, stemness, and protection," 2022, Science Immunology
  • "IL-10-producing Tfh cells accumulate with age and link inflammation with age-related immune suppression," 2020, Science Advances
  • "Editorial overview: Viral immunology before COVID-19," 2021, Current Opinion in Virology

Frequent coauthors in Zajac's work include Jennifer T Ingram, Laurie E. Harrington, Shannon M. Kahan, Casey T. Weaver, and Robert S. Welner.

Best Publications

  • Viral Immune Evasion Due to Persistence of Activated T Cells Without Effector Function

    Allan J. Zajac;Joseph N. Blattman;Kaja Murali-Krishna;David J.D. Sourdive

  • Counting Antigen-Specific CD8 T Cells: A Reevaluation of Bystander Activation during Viral Infection

    Kaja Murali-Krishna;John D Altman;M Suresh;David J.D Sourdive

  • T-cell exhaustion: characteristics, causes and conversion

    John S. Yi;Maureen A. Cox;Allan J. Zajac

  • A Vital Role for Interleukin-21 in the Control of a Chronic Viral Infection

    John S. Yi;Ming Du;Allan J. Zajac

  • CD4+ T cell help is required for the formation of a cytolytic CD8+ T cell subset that protects against chronic infection and cancer

    Ryan Zander;David Schauder;Gang Xin;Christine Nguyen

  • Cutting Edge: Increased Expression of Bcl-2 in Antigen-Specific Memory CD8+ T Cells

    Jason M. Grayson;Allan J. Zajac;John D. Altman;Rafi Ahmed

  • T cell exhaustion during persistent viral infections.

    Shannon M. Kahan;E. John Wherry;Allan J. Zajac

  • Ablation of CD8 and CD4 T Cell Responses by High Viral Loads

    Michael J. Fuller;Allan J. Zajac

  • Memory CD4 T cells emerge from effector T-cell progenitors.

    Laurie E. Harrington;Karen M. Janowski;James R. Oliver;Allan J. Zajac

  • Maintenance, Loss, and Resurgence of T Cell Responses During Acute, Protracted, and Chronic Viral Infections

    Michael J. Fuller;Aaruni Khanolkar;Anne E. Tebo;Allan J. Zajac

  • Conserved T Cell Receptor Repertoire in Primary and Memory CD8 T Cell Responses to an Acute Viral Infection

    David J.D. Sourdive;Kaja Murali-Krishna;John D. Altman;Allan J. Zajac

  • Dynamic regulation of T follicular regulatory cell responses by interleukin 2 during influenza infection

    Davide Botta;Michael J Fuller;Tatiana T Marquez-Lago;Holly Bachus

  • In vitro characterization of an internal ribosomal entry site (IRES) present within the 5' nontranslated region of hepatitis A virus RNA: comparison with the IRES of encephalomyocarditis virus.

    Edwin A. Brown;Allan J. Zajac;Stanley M. Lemon

  • Viral and bacterial infections induce expression of multiple NK cell receptors in responding CD8(+) T cells.

    Christopher W. McMahon;Allan J. Zajac;Amanda M. Jamieson;Laura Corral

  • CD4 T Cell-Dependent CD8 T Cell Maturation

    Aaruni Khanolkar;Michael J. Fuller;Allan J. Zajac

  • Attenuated Mutants of Venezuelan Equine Encephalitis Virus Containing Lethal Mutations in the PE2 Cleavage Signal Combined with a Second-Site Suppressor Mutation in E1

    Nancy L. Davis;Kevin W. Brown;Gary F. Greenwald;Allan J. Zajac

  • Tfh-cell-derived interleukin 21 sustains effector CD8+ T cell responses during chronic viral infection.

    Unknown

  • Anti-viral CD8 T cells and the cytokines that they love

    Maureen A. Cox;Shannon M. Kahan;Allan J. Zajac

  • Codon usage optimization of HIV type 1 subtype C gag, pol, env, and nef genes: In vitro expression and immune responses in DNA-vaccinated mice

    Feng Gao;Yingying Li;Julie M. Decker;Fred W. Peyerl

  • Cutting Edge: Emergence of CD127high Functionally Competent Memory T Cells Is Compromised by High Viral Loads and Inadequate T Cell Help

    Michael J. Fuller;David A. Hildeman;Steffanie Sabbaj;Dalia E. Gaddis

  • Bim mediates apoptosis of CD127lo effector T cells and limits T cell memory

    Sara Wojciechowski;Michael B. Jordan;Yanan Zhu;Janice White

Frequent Co-Authors

John D. Mountz
John D. Mountz University of Alabama at Birmingham
Rafi Ahmed
Rafi Ahmed Emory University
David T. Curiel
David T. Curiel Washington University in St. Louis
Casey T. Weaver
Casey T. Weaver University of Alabama at Birmingham
John D. Altman
John D. Altman Emory University
David A. Hildeman
David A. Hildeman Cincinnati Children's Hospital Medical Center
Jeffrey A. Frelinger
Jeffrey A. Frelinger University of Arizona
Harinder Singh
Harinder Singh University of Pittsburgh
Paul A. Goepfert
Paul A. Goepfert University of Alabama at Birmingham
Kohtaro Fujihashi
Kohtaro Fujihashi University of Alabama at Birmingham

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