World's Best Scientists 2026 revealed!

D-Index & Metrics

Microbiology

D-Index
77
Citations
17848
World Ranking
1371
National Ranking
66

Willy J. M. Spaan 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 Willy J. M. Spaan 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: 170 publications — 36th percentile

36% of scientists in this discipline score the same or lower.

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

Willy J. M. Spaan 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 Willy J. M. Spaan 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: 77 D-Index — 76th percentile

76% of scientists in this discipline score the same or lower.

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

Overview

Willy J. M. Spaan is affiliated with Leiden University Medical Center in the Netherlands. Their research profile is currently defined primarily by this institutional association.

Details regarding specific recent publications, including titles, years, and venues, are not available. Similarly, no information on frequent co-authors or common publication venues is provided, limiting insight into collaborative networks or preferred journals.

There are no recorded book publications or associated publishers linked to this researcher. Likewise, information about main fields of study, subfields, or main topics of work is not accessible at this time.

No awards have been noted in the available data. The scientist is not deceased, so current and future research activities may still be ongoing.

Best Publications

  • Unique and conserved features of genome and proteome of SARS-coronavirus, an early split-off from the coronavirus group 2 lineage.

    Eric J. Snijder;Peter J. Bredenbeek;Jessika C. Dobbe;Volker Thiel

  • Coronaviruses: structure and genome expression.

    W. Spaan;D. Cavanagh;M. C. Horzinek

  • Equine arteritis virus is not a togavirus but belongs to the coronaviruslike superfamily.

    J. A. Den Boon;E. J. Snijder;E. D. Chirnside;A. A. F. De Vries

  • Human and bovine coronaviruses recognize sialic acid-containing receptors similar to those of influenza C viruses.

    Reinhard Vlasak;Willem Luytjes;Willy Spaan;Peter Palese

  • Nidovirus transcription: how to make sense…?

    Alexander O. Pasternak;Willy J. M. Spaan;Eric J. Snijder

  • Early death after feline infectious peritonitis virus challenge due to recombinant vaccinia virus immunization.

    H. Vennema;R. J. de Groot;D. A. Harbour;M. Dalderup

  • Human monoclonal antibody as prophylaxis for SARS coronavirus infection in ferrets.

    Jan ter Meulen;Alexander B H Bakker;Edward N van den Brink;Gerrit J Weverling

  • Coronavirus mRNA synthesis involves fusion of non-contiguous sequences.

    W. Spaan;H. Delius;M. Skinner;J. Armstrong

  • The primary structure and expression of the second open reading frame of the polymerase gene of the coronavirus MHV-A59; a highly conserved polymerase is expressed by an efficient ribosomal frameshifting mechanism.

    Peter J. Bredenbeek;Catherine J. Pachuk;Ans F.H. Noten;Jeroen Charité

  • Severe acute respiratory syndrome coronavirus phylogeny: toward consensus.

    Alexander E. Gorbalenya;Eric J. Snijder;Willy J. M. Spaan

  • Arterivirus discontinuous mRNA transcription is guided by base pairing between sense and antisense transcription-regulating sequences

    Guido van Marle;Jessika C. Dobbe;Alexander P. Gultyaev;Willem Luytjes

  • An infectious arterivirus cDNA clone: identification of a replicase point mutation that abolishes discontinuous mRNA transcription.

    Leonie C. van Dinten;Johan A. den Boon;Alfred L. M. Wassenaar;Willy J. M. Spaan

  • Sequence of mouse hepatitis virus A59 mRNA 2: indications for RNA recombination between coronaviruses and influenza C virus.

    Willem Luytjes;Peter J. Bredenbeek;Ans F.H. Noten;Marian C. Horzinek

  • Effect of experimental rhinovirus 16 colds on airway hyperresponsiveness to histamine and interleukin‐8 in nasal lavage in asthmatic subjects in vivo

    K. Grünberg;M. C. Timmers;H. H. Smits;E. P. A. de Klerk

  • Evidence for a coiled-coil structure in the spike proteins of coronaviruses☆

    R.J. de Groot;W. Luytjes;M.C. Horzinek;B.A.M. van der Zeijst

  • A stable full-length yellow fever virus cDNA clone and the role of conserved RNA elements in flavivirus replication.

    Peter J. Bredenbeek;Engbert A. Kooi;Brett Lindenbach;Nicolette Huijkman

  • Proteolytic processing of the replicase ORF1a protein of equine arteritis virus.

    E. J. Snijder;A. L. M. Wassenaar;W. J. M. Spaan

  • Localization of Mouse Hepatitis Virus Nonstructural Proteins and RNA Synthesis Indicates a Role for Late Endosomes in Viral Replication

    Yvonne van der Meer;Eric J. Snijder;Jessika C. Dobbe;Sibylle Schleich

  • The Production of Recombinant Infectious DI-Particles of a Murine Coronavirus in the Absence of Helper Virus

    Evelyne C.W. Bos;Willem Luytjes;Hans Van Der Meulen;Henk K. Koerten

  • Processing of the Equine Arteritis Virus Replicase ORF1b Protein: Identification of Cleavage Products Containing the Putative Viral Polymerase and Helicase Domains

    L. C. Van Dinten;A. L. M. Wassenaar;A. E. Gorbalenya;W. J. M. Spaan

  • The Arterivirus Nsp2 Protease. AN UNUSUAL CYSTEINE PROTEASE WITH PRIMARY STRUCTURE SIMILARITIES TO BOTH PAPAIN-LIKE AND CHYMOTRYPSIN-LIKE PROTEASES

    Eric J. Snijder;Alfred L.M. Wassenaar;Willy J.M. Spaan;Alexander E. Gorbalenya;Alexander E. Gorbalenya

Frequent Co-Authors

Eric J. Snijder
Eric J. Snijder Leiden University Medical Center
Marian C. Horzinek
Marian C. Horzinek Utrecht University
Aloys C. M. Kroes
Aloys C. M. Kroes Leiden University Medical Center
Richard Molenkamp
Richard Molenkamp Erasmus University Rotterdam
Alexander E. Gorbalenya
Alexander E. Gorbalenya Leiden University
Harry Vennema
Harry Vennema Centre for infectious Disease Control (Cib)
Peter J. M. Rottier
Peter J. M. Rottier Utrecht University
Luis Enjuanes
Luis Enjuanes Spanish National Research Council
Raoul J. de Groot
Raoul J. de Groot Utrecht University
B. A. M. Van Der Zeijst
B. A. M. Van Der Zeijst Utrecht University

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Related Online Degrees & Career Pathways

Exploring microbiology can open the door to various health and science-related careers. For those concerned about accessibility, many online colleges that accept felons offer flexible learning options, ensuring education is attainable regardless of background.

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Alternatively, combining microbiology knowledge with healthcare administration is possible through certifications such as the CPC, offering pathways into medical coding and billing—a sector critical to efficient healthcare management.

For those aiming to integrate science and information management, a master in health information management salary programs can lead to roles overseeing health data systems, balancing clinical knowledge with technology and administration.

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