World's Best Scientists 2026 revealed!
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Ralf Clemens

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Immunology 45 4674 4323 8 8 163 11217

Ralf Clemens publications per year

The chart shows the history of publications by Ralf Clemens between 1969 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ralf Clemens published across 57 years, from 1969 to 2025, averaging 3.5 papers a year. Output peaked at 17 publications in 2022. 14 of the 201 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1969 to 2025. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2022. 1969: 1 publication 1970: 0 publications 1971: 0 publications 1972: 1 publication 1973: 0 publications 1974: 1 publication 1975: 0 publications 1976: 2 publications 1977: 2 publications 1978: 0 publications 1979: 1 publication 1980: 0 publications 1981: 0 publications 1982: 1 publication 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 1 publication 1988: 2 publications 1989: 5 publications 1990: 2 publications 1991: 1 publication 1992: 9 publications 1993: 3 publications 1994: 3 publications 1995: 6 publications 1996: 9 publications 1997: 6 publications 1998: 5 publications 1999: 7 publications 2000: 4 publications 2001: 3 publications 2002: 2 publications 2003: 2 publications 2004: 2 publications 2005: 0 publications 2006: 6 publications 2007: 5 publications 2008: 5 publications 2009: 1 publication 2010: 2 publications 2011: 6 publications 2012: 2 publications 2013: 1 publication 2014: 3 publications 2015: 6 publications 2016: 6 publications 2017: 6 publications 2018: 4 publications 2019: 2 publications 2020: 5 publications 2021: 14 publications 2022: 17 publications 2023: 15 publications 2024: 10 publications 2025: 4 publications
1969 2025

201 publications in total across all disciplines

View publications per year as a table
Ralf Clemens: publications per year, 1969 to 2025
Year Publications
1969 1
1970 0
1971 0
1972 1
1973 0
1974 1
1975 0
1976 2
1977 2
1978 0
1979 1
1980 0
1981 0
1982 1
1983 0
1984 0
1985 0
1986 0
1987 1
1988 2
1989 5
1990 2
1991 1
1992 9
1993 3
1994 3
1995 6
1996 9
1997 6
1998 5
1999 7
2000 4
2001 3
2002 2
2003 2
2004 2
2005 0
2006 6
2007 5
2008 5
2009 1
2010 2
2011 6
2012 2
2013 1
2014 3
2015 6
2016 6
2017 6
2018 4
2019 2
2020 5
2021 14
2022 17
2023 15
2024 10
2025 4
Total 201
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Ralf Clemens 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 Ralf Clemens sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 76 bars. Horizontal axis: publications, 62–71 to 807+. Vertical axis: number of scientists, 0 to 189. Most scientists, 189, have 152–161 publications. The last bar groups every scientist with 807 publications or more. The highlighted bar, 162–171 publications, is where this scientist sits. 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: 69 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 scientist 807+ publications: 100 scientists
62–71 publications 807+

This scientist: 163 publications — 21st percentile

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

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

View publications distribution as a table
Number of Immunology scientists by publication count, Research.com 2026 ranking edition. Based on 4,929 ranked scientists.
Publications Scientists This scientist
62–71 9
72–81 23
82–91 40
92–101 72
102–111 86
112–121 108
122–131 150
132–141 160
142–151 159
152–161 189
162–171 166 163
172–181 181
182–191 188
192–201 187
202–211 178
212–221 158
222–231 168
232–241 159
242–251 160
252–261 148
262–271 116
272–281 125
282–291 115
292–301 111
302–311 95
312–321 97
322–331 97
332–341 99
342–351 96
352–361 69
362–371 76
372–381 71
382–391 71
392–401 62
402–411 54
412–421 41
422–431 63
432–441 53
442–451 31
452–461 42
462–471 40
472–481 29
482–491 34
492–501 30
502–511 23
512–521 41
522–531 29
532–541 28
542–551 16
552–561 18
562–571 18
572–581 17
582–591 17
592–601 17
602–611 19
612–621 13
622–631 12
632–641 11
642–651 16
652–661 9
662–671 5
672–681 13
682–691 12
692–701 6
702–711 6
712–721 9
722–731 9
732–741 6
742–751 11
752–761 10
762–771 7
772–781 12
782–791 7
792–801 5
802–806 1
807+ 100
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Ralf Clemens 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 Ralf Clemens sits on this spectrum.

No. of scientists
50 100 150 200
Bar chart with 60 bars. Horizontal axis: D-Index, 40–41 to 157+. Vertical axis: number of scientists, 0 to 201. Most scientists, 201, have 58–59 D-Index. The last bar groups every scientist with 157 D-Index or more. The highlighted bar, 44–45 D-Index, is where this scientist sits. 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: 163 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
40–41 D-Index 157+

This scientist: 45 D-Index — 6th percentile

6% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Immunology scientists by D-index, Research.com 2026 ranking edition. Based on 4,929 ranked scientists.
D-Index Scientists This scientist
40–41 28
42–43 91
44–45 157 45
46–47 192
48–49 175
50–51 188
52–53 177
54–55 155
56–57 194
58–59 201
60–61 197
62–63 201
64–65 173
66–67 167
68–69 172
70–71 199
72–73 184
74–75 133
76–77 163
78–79 127
80–81 121
82–83 125
84–85 121
86–87 102
88–89 96
90–91 75
92–93 72
94–95 74
96–97 66
98–99 68
100–101 49
102–103 60
104–105 54
106–107 36
108–109 23
110–111 52
112–113 41
114–115 34
116–117 25
118–119 28
120–121 11
122–123 20
124–125 27
126–127 19
128–129 20
130–131 16
132–133 17
134–135 14
136–137 15
138–139 9
140–141 11
142–143 9
144–145 9
146–147 7
148–149 7
150–151 7
152–153 5
154–155 8
156 6
157+ 96
Download as CSV

Best Publications

  • Safety and Efficacy of an Attenuated Vaccine against Severe Rotavirus Gastroenteritis

    Guillermo M. Ruiz-Palacios;Irene Pérez-Schael;F. Raúl Velázquez;Hector Abate

  • Heterologous versus homologous COVID-19 booster vaccination in previous recipients of two doses of CoronaVac COVID-19 vaccine in Brazil (RHH-001): a phase 4, non-inferiority, single blind, randomised study

    Unknown

  • Safety and immunogenicity of a mRNA rabies vaccine in healthy adults: an open-label, non-randomised, prospective, first-in-human phase 1 clinical trial

    Martin Alberer;Ulrike Gnad-Vogt;Henoch Sangjoon Hong;Keyvan Tadjalli Mehr

  • Hemagglutination Inhibition Antibody Titers as a Correlate of Protection for Inactivated Influenza Vaccines in Children

    Steven Black;Uwe Nicolay;Timo Vesikari;Markus Knuf

  • Oil-in-Water Emulsion Adjuvant with Influenza Vaccine in Young Children

    Timo Vesikari;Markus Knuf;Peter Wutzler;Aino Karvonen

  • Immunogenicity and tolerability of a multicomponent meningococcal serogroup B (4CMenB) vaccine in healthy adolescents in Chile: a phase 2b/3 randomised, observer-blind, placebo-controlled study

    Unknown

  • Safety and immunogenicity of hepatitis A vaccine in patients with chronic liver disease

    Emmet B. Keeffe;Sten Iwarson;Brian J. McMahon;Karen L. Lindsay

  • Norovirus Vaccine Against Experimental Human GII.4 Virus Illness: A Challenge Study in Healthy Adults

    David I. Bernstein;Robert L. Atmar;G. Marshall Lyon;John J. Treanor

  • Safety and immunogenicity of S-Trimer (SCB-2019), a protein subunit vaccine candidate for COVID-19 in healthy adults: a phase 1, randomised, double-blind, placebo-controlled trial.

    Peter Richmond;Lara Hatchuel;Min Dong;Brenda Ma

  • Clinical Experience With An Inactivated Hepatitis A Vaccine

    Unknown

  • Blood Stage Antimalarial Efficacy of Primaquine in Plasmodium vivax Malaria

    Sasithon Pukrittayakamee;Sirivan Vanijanonta;Arun Chantra;Ralf Clemens

  • A Novel Intramuscular Bivalent Norovirus Virus-Like Particle Vaccine Candidate—Reactogenicity, Safety, and Immunogenicity in a Phase 1 Trial in Healthy Adults

    John J. Treanor;Robert L. Atmar;Sharon E. Frey;Robert Gormley

  • The safety and immunogenicity of two novel live attenuated monovalent (serotype 2) oral poliovirus vaccines in healthy adults: a double-blind, single-centre phase 1 study

    Pierre Van Damme;Ilse De Coster;Ananda S Bandyopadhyay;Hilde Revets

  • Activation of the coagulation cascade in severe falciparum malaria through the intrinsic pathway

    R. Clemens;C. Pramoolsinsap;R. Lorenz;S. Pukrittayakamee

  • Evidence for induction of polysaccharide specific B-cell-memory in the 1st year of life: plain Haemophilus influenzae type b - PRP (Hib) boosters children primed with a tetanus-conjugate Hib-DTPa-HBV combined vaccine

    F. Zepp;H.-J. Schmitt;A. Kaufhold;A. Schuind

  • Pertussis-specific cell-mediated immunity in infants after vaccination with a tricomponent acellular pertussis vaccine.

    F Zepp;M Knuf;P Habermehl;J H Schmitt

  • Explorations of clinical trials and pharmacovigilance databases of MF59®-adjuvanted influenza vaccines for associated cases of narcolepsy.

    Theodore F. Tsai;Antonio Crucitti;Pantaleo Nacci;Uwe Nicolay

  • Booster immunization of low- and non-responders after a standard three dose hepatitis B vaccine schedule—results of a post-marketing surveillance

    Ralf Clemens;Roland Sänger;Johannes Kruppenbacher;Wilfried Höbel

  • Soroprevalência para hepatite A e hepatite B em quatro centros no Brasil

    Unknown

  • Efficacy of the adjuvanted subunit protein COVID-19 vaccine, SCB-2019: a phase 2 and 3 multicentre, double-blind, randomised, placebo-controlled trial

    Unknown

Frequent Co-Authors

Nicholas J. White
Nicholas J. White Mahidol University
Sasithon Pukrittayakamee
Sasithon Pukrittayakamee Mahidol University
M. Steven Oberste
M. Steven Oberste Centers for Disease Control and Prevention
Sornchai Looareesuwan
Sornchai Looareesuwan Mahidol University
John F. Modlin
John F. Modlin Bill & Melinda Gates Foundation
Timo Vesikari
Timo Vesikari Tampere University
Fred Zepp
Fred Zepp Johannes Gutenberg University of Mainz
Rino Rappuoli
Rino Rappuoli Imperial College London
Wolfgang Jilg
Wolfgang Jilg University of Regensburg
Ulrich Bienzle
Ulrich Bienzle Charité - University Medicine Berlin

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Best Scientists Citing Ralf Clemens

Umesh D. Parashar

Umesh D. Parashar

Centers for Disease Control and Prevention

Publications: 191

Nicholas J. White

Nicholas J. White

Mahidol University

Publications: 101

Jacqueline E. Tate

Jacqueline E. Tate

Centers for Disease Control and Prevention

Publications: 67

Manish M. Patel

Manish M. Patel

Centers for Disease Control and Prevention

Publications: 62

Roger I. Glass

Roger I. Glass

National Institutes of Health

Publications: 59

Nigel A. Cunliffe

Nigel A. Cunliffe

University of Liverpool

Publications: 43

Gagandeep Kang

Gagandeep Kang

Christian Medical College & Hospital

Publications: 41

Kathleen M. Neuzil

Kathleen M. Neuzil

University of Maryland, Baltimore

Publications: 39

Jon R. Gentsch

Jon R. Gentsch

Centers for Disease Control and Prevention

Publications: 38

François Nosten

François Nosten

MORU Mahidol Oxford Tropical Medicine Research Unit

Publications: 37

Baoming Jiang

Baoming Jiang

Centers for Disease Control and Prevention

Publications: 36

Carl D. Kirkwood

Carl D. Kirkwood

Bill & Melinda Gates Foundation

Publications: 35

Osamu Nakagomi

Osamu Nakagomi

Nagasaki University

Publications: 34

Ric N. Price

Ric N. Price

Charles Darwin University

Publications: 34

Shabir A. Madhi

Shabir A. Madhi

University of the Witwatersrand

Publications: 32

Rino Rappuoli

Rino Rappuoli

Imperial College London

Publications: 32

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