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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Microbiology 84 906 811 23 23 447 32209

Thomas V. Riley publications per year

The chart shows the history of publications by Thomas V. Riley between 1976 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Thomas V. Riley published across 50 years, from 1976 to 2025, averaging 10.3 papers a year. Output peaked at 30 publications in 2015. 18 of the 517 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1976 to 2025. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2015. 1976: 1 publication 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 4 publications 1982: 6 publications 1983: 4 publications 1984: 4 publications 1985: 3 publications 1986: 4 publications 1987: 7 publications 1988: 4 publications 1989: 3 publications 1990: 3 publications 1991: 8 publications 1992: 2 publications 1993: 3 publications 1994: 13 publications 1995: 17 publications 1996: 7 publications 1997: 9 publications 1998: 7 publications 1999: 11 publications 2000: 10 publications 2001: 14 publications 2002: 11 publications 2003: 12 publications 2004: 6 publications 2005: 13 publications 2006: 8 publications 2007: 14 publications 2008: 11 publications 2009: 8 publications 2010: 9 publications 2011: 12 publications 2012: 19 publications 2013: 19 publications 2014: 21 publications 2015: 30 publications 2016: 20 publications 2017: 29 publications 2018: 22 publications 2019: 25 publications 2020: 19 publications 2021: 20 publications 2022: 17 publications 2023: 10 publications 2024: 2 publications 2025: 16 publications
1976 2025

517 publications in total across all disciplines

View publications per year as a table
Thomas V. Riley: publications per year, 1976 to 2025
Year Publications
1976 1
1977 0
1978 0
1979 0
1980 0
1981 4
1982 6
1983 4
1984 4
1985 3
1986 4
1987 7
1988 4
1989 3
1990 3
1991 8
1992 2
1993 3
1994 13
1995 17
1996 7
1997 9
1998 7
1999 11
2000 10
2001 14
2002 11
2003 12
2004 6
2005 13
2006 8
2007 14
2008 11
2009 8
2010 9
2011 12
2012 19
2013 19
2014 21
2015 30
2016 20
2017 29
2018 22
2019 25
2020 19
2021 20
2022 17
2023 10
2024 2
2025 16
Total 517
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Thomas V. Riley 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 Thomas V. Riley sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 445–454 publications, is where this scientist sits. 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
55–64 publications 679+

This scientist: 447 publications — 93rd percentile

93% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253
175–184 276
185–194 190
195–204 234
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146
265–274 139
275–284 148
285–294 115
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36
415–424 35
425–434 29
435–444 33
445–454 34 447
455–464 25
465–474 26
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99
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Thomas V. Riley 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 Thomas V. Riley sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 84 D-Index, is where this scientist sits. 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: 84 D-Index — 84th percentile

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

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

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80
75 66
76 87
77 60
78 73
79 59
80 57
81 55
82 47
83 77
84 50 84
85 45
86 42
87 41
88 32
89 38
90 35
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21
99 22
100 30
101 16
102 20
103 17
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
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Overview

Thomas V. Riley is affiliated with the University of Western Australia in Australia. Their research primarily focuses on medicine, with significant contributions in infectious diseases, epidemiology, surgery, critical care and intensive care medicine, and molecular biology.

The scientist's work extensively covers topics related to Clostridium difficile and Clostridium perfringens research, with additional focus areas including microscopic colitis, nosocomial infections in intensive care units, antimicrobial resistance in Staphylococcus, viral gastroenteritis research and epidemiology, Helicobacter pylori-related gastroenterology studies, and gut microbiota and health.

Recent publications by Thomas V. Riley include:

  • Major genetic discontinuity and novel toxigenic species in Clostridioides difficile taxonomy, 2021, eLife
  • Antimicrobial resistance in Clostridioides difficile, 2021, European Journal of Clinical Microbiology & Infectious Diseases
  • Antibiotics and healthcare facility-associated Clostridioides difficile infection: systematic review and meta-analysis 2020 update, 2021, Journal of Antimicrobial Chemotherapy
  • A species-wide genetic atlas of antimicrobial resistance in Clostridioides difficile, 2021, Microbial Genomics
  • Antimicrobial Susceptibilities of Clostridium difficile Isolates from 12 Asia-Pacific Countries in 2014 and 2015, 2020, Antimicrobial Agents and Chemotherapy

Thomas V. Riley frequently collaborates with a number of colleagues including Daniel R. Knight, Deirdre A. Collins, Papanin Putsathit, Korakrit Imwattana, and Su-Chen Lim.

The scientist publishes regularly in several academic venues, with notable publication counts in:

  • Anaerobe
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Journal of Antimicrobial Chemotherapy
  • Microbial Genomics
  • Journal of Clinical Microbiology

Best Publications

  • Antimicrobial activity of essential oils and other plant extracts

    Kate Hammer;Christine Carson;Thomas Riley

  • Melaleuca alternifolia (Tea Tree) Oil: a Review of Antimicrobial and Other Medicinal Properties

    C.F. Carson;Kate Hammer;Thomas Riley

  • Mechanism of Action of Melaleuca alternifolia (Tea Tree) Oil on Staphylococcus aureus Determined by Time-Kill, Lysis, Leakage, and Salt Tolerance Assays and Electron Microscopy

    Christine F. Carson;Brian J. Mee;Thomas V. Riley

  • Antimicrobial activity of the major components of the essential oil of Melaleuca alternifolia

    C.F. Carson;Thomas Riley;Thomas Riley

  • Emergence and global spread of epidemic healthcare-associated Clostridium difficile.

    Miao He;Fabio Miyajima;Paul Roberts;Louise Ellison

  • Antibiotics and hospital-acquired Clostridium difficile infection: update of systematic review and meta-analysis

    Claudia Slimings;Thomas V. Riley

  • Antifungal activity of the components of Melaleuca alternifolia (tea tree) oil.

    Kate Hammer;Christine Carson;Thomas Riley

  • Terpinen-4-ol, the main component of the essential oil of Melaleuca alternifolia (tea tree oil), suppresses inflammatory mediator production by activated human monocytes.

    P.H. Hart;C. Brand;Christine Carson;Thomas Riley

  • Antimicrobial activity of commercial Olea europaea (olive) leaf extract

    Aurelia N. Sudjana;Carla D’Orazio;Vanessa Ryan;Nooshin Rasool

  • Tea tree oil as an alternative topical decolonization agent for methicillin-resistant Staphylococcus aureus

    M. Caelli;J. Porteous;C.F. Carson;R. Heller

  • Antifungal effects of Melaleuca alternifolia (tea tree) oil and its components on Candida albicans, Candida glabrata and Saccharomyces cerevisiae

    Kate Hammer;Christine Carson;Thomas Riley

  • Antibiotics and hospital-acquired Clostridium difficile-associated diarrhoea: a systematic review

    Claudia Thomas;Mark Stevenson;Thomas V. Riley

  • A review of the toxicity of Melaleuca alternifolia (tea tree) oil.

    Kate A. Hammer;Christine F. Carson;Tom V. Riley;Jesper Bo Nielsen

  • Erysipelothrix rhusiopathiae: bacteriology, epidemiology and clinical manifestations of an occupational pathogen

    C.J. Brooke;Thomas Riley

  • Susceptibility of methicillin-resistant Staphylococcus aureus to the essential oil of Melaleuca alternifolia

    C.F. Carson;B.D. Cookson;H.D. Farrelly;Thomas Riley

  • Community Strain of Methicillin-Resistant Staphylococcus aureus Involved in a Hospital Outbreak

    F.G. O'Brien;J.W. Pearman;M. Gracey;Thomas Riley

  • Clostridium difficile infection in the community: a zoonotic disease?

    M.P.M. Hensgens;E.C. Keessen;M.M. Squire;T.V. Riley

  • Diversity and Evolution in the Genome of Clostridium difficile

    Daniel R. Knight;Briony Elliott;Barbara J. Chang;Timothy T. Perkins

  • In-vitro activity of essential oils, in particular Melaleuca alternifolia (tea tree) oil and tea tree oil products, against Candida spp.

    Katherine A. Hammer;Christine F. Carson;Thomas V. Riley

  • Broth Micro-Dilution Method for Determining the Susceptibility of Escherichia Coli and Staphylococcus Aureus to the Essential Oil of Melaleuca Alternifolia (Tea Tree Oil)

    C.F. Carson;Kate Hammer;Thomas Riley

Frequent Co-Authors

David L. Paterson
David L. Paterson University of Queensland
Archie C. A. Clements
Archie C. A. Clements Queen's University Belfast
Laith Yakob
Laith Yakob London School of Hygiene & Tropical Medicine
Dena Lyras
Dena Lyras Monash University
Nicholas Graves
Nicholas Graves Queensland University of Technology
Derrick W. Crook
Derrick W. Crook University of Oxford
David W. Eyre
David W. Eyre University of Oxford
Peter M. Hawkey
Peter M. Hawkey University of Birmingham
Dale N. Gerding
Dale N. Gerding Veterans Health Administration
David J. Hampson
David J. Hampson Murdoch University

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