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Microbiology
USA
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 104 1076 949 430 346 302 35391
Microbiology 119 154 139 72 59 487 55745

Patrick J. Brennan publications per year

The chart shows the history of publications by Patrick J. Brennan between 1972 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Patrick J. Brennan published across 53 years, from 1972 to 2024, averaging 10.5 papers a year. Output peaked at 30 publications in 2009. 7 of the 557 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1972 to 2024. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2009. 1972: 1 publication 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 2 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 3 publications 1984: 7 publications 1985: 9 publications 1986: 9 publications 1987: 8 publications 1988: 7 publications 1989: 10 publications 1990: 10 publications 1991: 9 publications 1992: 17 publications 1993: 13 publications 1994: 17 publications 1995: 20 publications 1996: 19 publications 1997: 16 publications 1998: 11 publications 1999: 16 publications 2000: 20 publications 2001: 23 publications 2002: 17 publications 2003: 16 publications 2004: 18 publications 2005: 19 publications 2006: 19 publications 2007: 19 publications 2008: 16 publications 2009: 30 publications 2010: 10 publications 2011: 15 publications 2012: 14 publications 2013: 15 publications 2014: 8 publications 2015: 9 publications 2016: 11 publications 2017: 14 publications 2018: 5 publications 2019: 14 publications 2020: 15 publications 2021: 17 publications 2022: 2 publications 2023: 4 publications 2024: 3 publications
1972 2024

557 publications in total across all disciplines

View publications per year as a table
Patrick J. Brennan: publications per year, 1972 to 2024
Year Publications
1972 1
1973 0
1974 0
1975 0
1976 0
1977 0
1978 2
1979 0
1980 0
1981 0
1982 0
1983 3
1984 7
1985 9
1986 9
1987 8
1988 7
1989 10
1990 10
1991 9
1992 17
1993 13
1994 17
1995 20
1996 19
1997 16
1998 11
1999 16
2000 20
2001 23
2002 17
2003 16
2004 18
2005 19
2006 19
2007 19
2008 16
2009 30
2010 10
2011 15
2012 14
2013 15
2014 8
2015 9
2016 11
2017 14
2018 5
2019 14
2020 15
2021 17
2022 2
2023 4
2024 3
Total 557
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Patrick J. Brennan 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 Patrick J. Brennan 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, 485–494 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: 487 publications — 94th percentile

94% 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
455–464 25
465–474 26
475–484 20
485–494 19 487
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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Patrick J. Brennan 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 Patrick J. Brennan 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, 119 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: 119 D-Index — 97th percentile

97% 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
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 10 119
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
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Research.com Recognitions

  • 2026 - Research.com Microbiology in United States Leader Award
  • 2025 - Research.com Microbiology in United States Leader Award
  • 1983 - Fellow of the American Society of Mechanical Engineers

Overview

Patrick J. Brennan is affiliated with Colorado State University in the United States. Their research primarily spans the field of Medicine, with a focused involvement in various subfields including Emergency Medical Services, Infectious Diseases, Molecular Biology, Surgery, and Epidemiology.

The scientist's recent publications cover a range of topics related to healthcare, infectious diseases, and medical pathology. Notable papers include:

  • Locally Informed Simulation to Predict Hospital Capacity Needs During the COVID-19 Pandemic (2020) published in Annals of Internal Medicine
  • Characteristics, Outcomes, and Trends of Patients With COVID-19-Related Critical Illness at a Learning Health System in the United States (2021) published in Annals of Internal Medicine
  • The immunology of other mycobacteria: M. ulcerans, M. leprae (2020) published in Seminars in Immunopathology
  • Gastroblastoma with a novel EWSR1-CTBP1 fusion presenting in adolescence (2021) published in Genes Chromosomes and Cancer
  • YAP1-FAM118B Fusion Defines a Rare Subset of Childhood and Young Adulthood Meningiomas (2020) published in The American Journal of Surgical Pathology

Frequent coauthors in Patrick J. Brennan's body of work include:

  • Peter White
  • Richard K. Wilson
  • Kathleen M. Schieffer
  • Benjamin Kelly
  • Vincent Magrini

Common venues for publication are:

  • British journal of surgery
  • Annals of Internal Medicine
  • Frontiers in Cellular and Infection Microbiology
  • Seminars in Immunopathology
  • Genes Chromosomes and Cancer

Patrick J. Brennan's research covers key topics such as:

  • Global Health Workforce Issues
  • Diversity and Career in Medicine
  • Disaster Response and Management
  • Leprosy Research and Treatment
  • Pharmacological Effects of Natural Compounds
  • Patient Satisfaction in Healthcare
  • Healthcare Policy and Management

During their career, Patrick J. Brennan was awarded the title of Fellow of the American Society of Mechanical Engineers in 1983.

Best Publications

  • Infectious Diseases Society of America and the Society for Healthcare Epidemiology of America Guidelines for Developing an Institutional Program to Enhance Antimicrobial Stewardship

    Timothy H. Dellit;Robert C. Owens;John E. McGowan;Dale N. Gerding

  • The Envelope of Mycobacteria

    Patrick J. Brennan;Hiroshi Nikaido

  • Host defense mechanisms triggered by microbial lipoproteins through toll-like receptors.

    Hans D. Brightbill;Daniel H. Libraty;Stephan R. Krutzik;Ruey Bing Yang

  • Estimating the Proportion of Healthcare-Associated Infections That Are Reasonably Preventable and the Related Mortality and Costs

    Craig A. Umscheid;Matthew D. Mitchell;Jalpa A. Doshi;Rajender Agarwal

  • Structure, function, and biogenesis of the cell wall of Mycobacterium tuberculosis

    P.J Brennan

  • Role of the Major Antigen of Mycobacterium tuberculosis in Cell Wall Biogenesis

    John T. Belisle;Varalakshmi D. Vissa;Varalakshmi D. Vissa;Todd Sievert;Todd Sievert;Kuni Takayama;Kuni Takayama

  • Invariant natural killer T cells: an innate activation scheme linked to diverse effector functions

    Patrick J. Brennan;Manfred Brigl;Michael B. Brenner

  • Valacyclovir for the Prevention of Cytomegalovirus Disease after Renal Transplantation

    David Lowance;Hans H. Neumayer;Christophe M. Legendre;Jean Paul Squifflet

  • CD1-restricted T cell recognition of microbial lipoglycan antigens.

    P. A. Sieling;D. Chatterjee;S. A. Porcelli;T. I. Prigozy

  • The embAB genes of Mycobacterium avium encode an arabinosyl transferase involved in cell wall arabinan biosynthesis that is the target for the antimycobacterial drug ethambutol

    Aimee E. Belanger;Gurdyal S. Besra;Michael E. Ford;Katarina Mikusova

  • On the origin of leprosy

    Marc Monot;Nadine Honoré;Thierry Garnier;Romulo Araoz

  • A novel pathogenic taxon of the Mycobacterium tuberculosis complex, Canetti: characterization of an exceptional isolate from Africa.

    D. Van Soolingen;T. Hoogenboezem;P. E. W. De Haas;P. W. M. Hermans

  • Comparative genomic and phylogeographic analysis of Mycobacterium leprae

    Marc Monot;Nadine Honoré;Thierry Garnier;Nora Zidane

  • Activation and regulation of Toll-like receptors 2 and 1 in human leprosy.

    Stephan R. Krutzik;Maria Teresa Ochoa;Peter A. Sieling;Satoshi Uematsu

  • Structure and antigenicity of the phosphorylated lipopolysaccharide antigens from the leprosy and tubercle bacilli.

    S W Hunter;H Gaylord;P J Brennan

  • Local production of tumor necrosis factor and IFN-gamma in tuberculous pleuritis.

    P F Barnes;S J Fong;P J Brennan;P E Twomey

  • Biogenesis of the mycobacterial cell wall and the site of action of ethambutol.

    K Mikusová;R A Slayden;G S Besra;P J Brennan

  • Activation of the Pro-drug Ethionamide Is Regulated in Mycobacteria *

    Alain R. Baulard;Joanna C. Betts;Jean Engohang-Ndong;Selwyn Quan

  • Cytokine production induced by Mycobacterium tuberculosis lipoarabinomannan. Relationship to chemical structure.

    P F Barnes;D Chatterjee;J S Abrams;S Lu

  • Regulatory iNKT cells lack expression of the transcription factor PLZF and control the homeostasis of Treg cells and macrophages in adipose tissue

    Lydia Lynch;Xavier Michelet;Sai Zhang;Patrick J Brennan

  • Recognition of a peptide antigen by heat shock--reactive gamma delta T lymphocytes.

    Willi Born;Lisa Hall;Angela Dallas;Joel Boymel

Frequent Co-Authors

Delphi Chatterjee
Delphi Chatterjee Colorado State University
Gurdyal S. Besra
Gurdyal S. Besra University of Birmingham
Michael R. McNeil
Michael R. McNeil Colorado State University
Dean C. Crick
Dean C. Crick Colorado State University
John T. Belisle
John T. Belisle Colorado State University
Mary Jackson
Mary Jackson Colorado State University
Michael B. Brenner
Michael B. Brenner Harvard Medical School
Sang-Nae Cho
Sang-Nae Cho Yonsei University
Kay-Hooi Khoo
Kay-Hooi Khoo National Taiwan University
Stewart T. Cole
Stewart T. Cole Institut Pasteur

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