World's Best Scientists 2026 revealed!
Ilkka Julkunen

Ilkka Julkunen

D-Index & Metrics

Immunology

D-Index
97
Citations
30639
World Ranking
831
National Ranking
6

Medicine

D-Index
96
Citations
30280
World Ranking
9764
National Ranking
108

Ilkka Julkunen 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 Ilkka Julkunen 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: 327 publications — 69th percentile

69% of scientists in this discipline score the same or lower.

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

Ilkka Julkunen 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 Ilkka Julkunen 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: 97 D-Index — 84th percentile

84% of scientists in this discipline score the same or lower.

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

Overview

Ilkka Julkunen is affiliated with Turku University Hospital in Finland and has contributed extensively to research in the field of medicine, with a particular focus on infectious diseases. Their work spans several subfields including infectious diseases, epidemiology, molecular biology, immunology, and animal science and zoology.

The main themes of Julkunen's research revolve around SARS-CoV-2 and COVID-19, encompassing studies on viral detection, vaccine responses, and clinical research related to the pandemic. Additional research interests include animal virus infections, influenza virus studies, viral gastroenteritis, and vaccine coverage and hesitancy.

Julkunen's recent publications reflect their engagement with COVID-19 vaccine responses and immune system reactions, with notable papers including:

  • COVID-19 mRNA vaccine induced antibody responses against three SARS-CoV-2 variants (2021, Nature Communications)
  • Comparative analysis of COVID-19 vaccine responses and third booster dose-induced neutralizing antibodies against Delta and Omicron variants (2022, Nature Communications)
  • Long-Lasting T Cell Responses in BNT162b2 COVID-19 mRNA Vaccinees and COVID-19 Convalescent Patients (2022, Frontiers in Immunology)
  • A Combination of N and S Antigens With IgA and IgG Measurement Strengthens the Accuracy of SARS-CoV-2 Serodiagnostics (2021, The Journal of Infectious Diseases)
  • Persistent T cell-mediated immune responses against Omicron variants after the third COVID-19 mRNA vaccine dose (2023, Frontiers in Immunology)

Frequent coauthors collaborating with Julkunen include:

  • Laura Kakkola
  • Pekka Kolehmainen
  • Pinja Jalkanen
  • Pamela Österlund
  • Johanna Lempainen

Julkunen's work has been published in prominent venues such as Frontiers in Immunology, Vaccine, Microbiology Spectrum, bioRxiv (Cold Spring Harbor Laboratory), and Research Square. These journals reflect a strong emphasis on immunological and virological research within the context of infectious diseases.

Best Publications

  • Distinct patterns and kinetics of chemokine production regulate dendritic cell function.

    Federica Sallusto;Belinda Palermo;Danielle Lenig;Minja Miettinen

  • Maturation, activation, and protection of dendritic cells induced by double-stranded RNA.

    Marina Cella;Mariolina Salio;Yoichi Sakakibara;Hanno Langen

  • Viral infection and Toll-like receptor agonists induce a differential expression of type I and λ interferons in human plasmacytoid and monocyte-derived dendritic cells

    Eliana M Coccia;Martina Severa;Martina Severa;Elena Giacomini;Danièle Monneron

  • Infection of Human Macrophages and Dendritic Cells with Mycobacterium tuberculosis Induces a Differential Cytokine Gene Expression That Modulates T Cell Response

    Elena Giacomini;Elisabetta Iona;Lucietta Ferroni;Minja Miettinen

  • AS03 Adjuvanted AH1N1 Vaccine Associated with an Abrupt Increase in the Incidence of Childhood Narcolepsy in Finland

    Hanna Nohynek;Jukka Jokinen;Markku Partinen;Outi Vaarala

  • IL-21 in Synergy with IL-15 or IL-18 Enhances IFN-γ Production in Human NK and T Cells

    Mari Strengell;Sampsa Matikainen;Jukka Sirén;Anne Lehtonen

  • Lactobacilli and Streptococci Induce Interleukin-12 (IL-12), IL-18, and Gamma Interferon Production in Human Peripheral Blood Mononuclear Cells

    Minja Miettinen;Sampsa Matikainen;Jaana Vuopio-Varkila;Jaana Pirhonen

  • Molecular pathogenesis of influenza A virus infection and virus-induced regulation of cytokine gene expression.

    Ilkka Julkunen;Timo Sareneva;Jaana Pirhonen;Tapani Ronni

  • Increased Incidence and Clinical Picture of Childhood Narcolepsy following the 2009 H1N1 Pandemic Vaccination Campaign in Finland

    Markku Partinen;Outi Saarenpää-Heikkilä;Ismo Ilveskoski;Christer Hublin

  • IFN Regulatory Factor Family Members Differentially Regulate the Expression of Type III IFN (IFN-λ) Genes

    Pamela I. Österlund;Taija E. Pietilä;Ville Veckman;Sergei V. Kotenko

  • IFNs activate toll-like receptor gene expression in viral infections.

    M Miettinen;T Sareneva;I Julkunen;S Matikainen

  • Virus infection activates IL-1 beta and IL-18 production in human macrophages by a caspase-1-dependent pathway.

    Jaana Pirhonen;Timo Sareneva;Masashi Kurimoto;Ilkka Julkunen

  • Influenza A virus-induced IFN-alpha/beta and IL-18 synergistically enhance IFN-gamma gene expression in human T cells.

    Timo Sareneva;Sampsa Matikainen;Masashi Kurimoto;Ilkka Julkunen

  • IL-21 Up-Regulates the Expression of Genes Associated with Innate Immunity and Th1 Response

    Mari Strengell;Timo Sareneva;Don Foster;Ilkka Julkunen

  • Inflammatory responses in influenza A virus infection.

    Ilkka Julkunen;Krister Melén;Maria Nyqvist;Jaana Pirhonen

  • IFN-alpha regulates TLR-dependent gene expression of IFN-alpha, IFN-beta, IL-28, and IL-29

    Jukka Sirén;Jaana Pirhonen;Ilkka Julkunen;Sampsa Matikainen

  • Narcolepsy as an autoimmune disease: the role of H1N1 infection and vaccination.

    Markku Partinen;Birgitte Rahbek Kornum;Giuseppe Plazzi;Poul Jennum

  • Antibodies to influenza nucleoprotein cross-react with human hypocretin receptor 2

    Syed Sohail Ahmed;Wayne Volkmuth;José Duca;Lorenzo Corti

  • Lactobacilli and Streptococci activate NF-kappa B and STAT signaling pathways in human macrophages.

    Minja Miettinen;Anne Lehtonen;Ilkka Julkunen;Sampsa Matikainen

  • Probiotic intervention has strain-specific anti-inflammatory effects in healthy adults

    Riina A Kekkonen;Netta Lummela;Heli Karjalainen;Sinikka Latvala

  • Expression and Replication of the Influenza Virus Genome

    Robert M. Krug;Firelli V. Alonso-Caplen;Ilkka Julkunen;Michael G. Katze

Frequent Co-Authors

Sampsa Matikainen
Sampsa Matikainen University of Helsinki
Thedi Ziegler
Thedi Ziegler University of Turku
Markku Partinen
Markku Partinen University of Helsinki
Olli Vapalahti
Olli Vapalahti University of Helsinki
Outi Vaarala
Outi Vaarala University of Helsinki
Riitta Korpela
Riitta Korpela University of Helsinki
Jorma Ilonen
Jorma Ilonen University of Turku
Matti Waris
Matti Waris Turku University Hospital
Maija Lappalainen
Maija Lappalainen University of Helsinki
Dennis H. Bamford
Dennis H. Bamford University of Helsinki

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