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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Microbiology 57 3522 3230 309 291 174 21265

Joanna Ellis publications per year

The chart shows the history of publications by Joanna Ellis between 1986 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Joanna Ellis published across 40 years, from 1986 to 2025, averaging 4.9 papers a year. Output peaked at 37 publications in 2020. 4 of the 197 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1986 to 2025. Vertical axis: number of publications, 0 to 37. Peak 37 publications in 2020. 1986: 1 publication 1987: 0 publications 1988: 1 publication 1989: 1 publication 1990: 0 publications 1991: 4 publications 1992: 2 publications 1993: 2 publications 1994: 1 publication 1995: 0 publications 1996: 0 publications 1997: 3 publications 1998: 2 publications 1999: 1 publication 2000: 0 publications 2001: 3 publications 2002: 3 publications 2003: 1 publication 2004: 1 publication 2005: 1 publication 2006: 2 publications 2007: 4 publications 2008: 5 publications 2009: 6 publications 2010: 5 publications 2011: 12 publications 2012: 4 publications 2013: 11 publications 2014: 7 publications 2015: 12 publications 2016: 6 publications 2017: 6 publications 2018: 6 publications 2019: 5 publications 2020: 37 publications 2021: 21 publications 2022: 10 publications 2023: 7 publications 2024: 3 publications 2025: 1 publication
1986 2025

197 publications in total across all disciplines

View publications per year as a table
Joanna Ellis: publications per year, 1986 to 2025
Year Publications
1986 1
1987 0
1988 1
1989 1
1990 0
1991 4
1992 2
1993 2
1994 1
1995 0
1996 0
1997 3
1998 2
1999 1
2000 0
2001 3
2002 3
2003 1
2004 1
2005 1
2006 2
2007 4
2008 5
2009 6
2010 5
2011 12
2012 4
2013 11
2014 7
2015 12
2016 6
2017 6
2018 6
2019 5
2020 37
2021 21
2022 10
2023 7
2024 3
2025 1
Total 197
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Joanna Ellis 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 Joanna Ellis 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, 165–174 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: 174 publications — 38th percentile

38% 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
165–174 253 174
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
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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Joanna Ellis 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 Joanna Ellis 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, 57 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: 57 D-Index — 36th percentile

36% 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 57
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
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
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Overview

Joanna Ellis is affiliated with Public Health England in the United Kingdom and has contributed extensively to medical research, particularly in the field of infectious diseases. Their work focuses mainly on SARS-CoV-2 and COVID-19, encompassing a range of topics from viral detection to epidemiological studies.

Ellis has published 128 works primarily in the field of Medicine, with notable subfields including Infectious Diseases (70 publications), Epidemiology (34), Health (8), Modeling and Simulation (8), and Neurology (8). The scientist's research covers key topics such as SARS-CoV-2 and COVID-19 Research (50 publications), COVID-19 Clinical Research Studies (44), Respiratory Viral Infections Research (32), SARS-CoV-2 Detection and Testing (28), Influenza Virus Research Studies (22), COVID-19 Epidemiological Studies (16), and Long-Term Effects of COVID-19 (16).

Frequent coauthors include:

  • Maria Zambon
  • Mary Ramsay
  • Angie Lackenby
  • Kevin Brown
  • Simon de Lusignan

Ellis often publishes in the following venues:

  • Influenza and Other Respiratory Viruses
  • SSRN Electronic Journal
  • Eurosurveillance
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Journal of Infection

Among Ellis's recent papers are:

  • Detection of 2019 novel coronavirus (2019-nCoV) by real-time RT-PCR, 2020, Eurosurveillance
  • Duration of infectiousness and correlation with RT-PCR cycle threshold values in cases of COVID-19, England, January to May 2020, 2020, Eurosurveillance
  • COVID-19 vaccine coverage in health-care workers in England and effectiveness of BNT162b2 mRNA vaccine against infection (SIREN): a prospective, multicentre, cohort study, 2021, The Lancet
  • Community transmission and viral load kinetics of the SARS-CoV-2 delta (B.1.617.2) variant in vaccinated and unvaccinated individuals in the UK: a prospective, longitudinal, cohort study, 2021, The Lancet Infectious Diseases
  • SARS-CoV-2 infection rates of antibody-positive compared with antibody-negative health-care workers in England: a large, multicentre, prospective cohort study (SIREN), 2021, The Lancet

Best Publications

  • Detection of 2019 novel coronavirus (2019-nCoV) by real-time RT-PCR.

    Victor M. Corman;Olfert Landt;Marco Kaiser;Richard Molenkamp

  • Community transmission and viral load kinetics of the SARS-CoV-2 delta (B.1.617.2) variant in vaccinated and unvaccinated individuals in the UK: a prospective, longitudinal, cohort study.

    Anika Singanayagam;Anika Singanayagam;Anika Singanayagam;Seran Hakki;Jake Dunning;Jake Dunning;Kieran J Madon

  • COVID-19 vaccine coverage in health-care workers in England and effectiveness of BNT162b2 mRNA vaccine against infection (SIREN): a prospective, multicentre, cohort study.

    Victoria Jane Hall;Victoria Jane Hall;Sarah Foulkes;Ayoub Saei;Nick Andrews;Nick Andrews

  • SARS-CoV-2 infection rates of antibody-positive compared with antibody-negative health-care workers in England: a large, multicentre, prospective cohort study (SIREN).

    V J Hall;S Foulkes;A Charlett;A Atti

  • Risk factors for SARS-CoV-2 among patients in the Oxford Royal College of General Practitioners Research and Surveillance Centre primary care network: a cross-sectional study.

    Simon de Lusignan;Simon de Lusignan;Jienchi Dorward;Jienchi Dorward;Ana Correa;Ana Correa;Nicholas Jones

  • Multiplex PCR for Typing and Subtyping Influenza and Respiratory Syncytial Viruses

    J. Stockton;J. S. Ellis;M. Saville;J. P. Clewley

  • Epidemiology of respiratory syncytial virus in children younger than 5 years in England during the COVID-19 pandemic, measured by laboratory, clinical, and syndromic surveillance: a retrospective observational study

    Unknown

  • Multiplex reverse transcription-PCR for surveillance of influenza A and B viruses in England and Wales in 1995 and 1996.

    J S Ellis;D M Fleming;M C Zambon

  • Antigen processing for presentation by class II major histocompatibility complex requires cleavage by cathepsin E.

    Bennett K;Levine T;Ellis Js;Peanasky Rj

  • Pfizer-BioNTech and Oxford AstraZeneca COVID-19 vaccine effectiveness and immune response amongst individuals in clinical risk groups

    Unknown

  • Pandemic Influenza A (H1N1) 2009 and mortality in the United Kingdom: risk factors for death, April 2009 to March 2010.

    Richard Pebody;E. McLean;Hongxin Zhao;Paul Cleary

  • Neuraminidase Inhibitor Resistance after Oseltamivir Treatment of Acute Influenza A and B in Children

    Iain Stephenson;Jane Democratis;Angie Lackenby;Teresa McNally

  • Molecular diagnosis of influenza

    Joanna S. Ellis;Maria C. Zambon

  • Effectiveness of seasonal influenza vaccine in preventing laboratory-confirmed influenza in primary care in the United Kingdom: 2014/15 end of season results.

    Richard Pebody;Fiona Warburton;Nick Andrews;Joanna Ellis

  • Vaccine effectiveness of 2011/12 trivalent seasonal influenza vaccine in preventing laboratory-confirmed influenza in primary care in the United Kingdom: evidence of waning intra-seasonal protection

    Richard Pebody;Nicholas Andrews;J. McMenamin;H. Durnall

  • Effectiveness of seasonal influenza vaccine for adults and children in preventing laboratory-confirmed influenza in primary care in the United Kingdom: 2015/16 end-of-season results

    Richard Pebody;Fiona Warburton;Joanna Ellis;Nick Andrews

  • DNA vaccination protects against an influenza challenge in a double-blind randomised placebo-controlled phase 1b clinical trial.

    Suzanne Jones;Kirsten Evans;Hilary McElwaine-Johnn;Michaela Sharpe

  • Outbreak of low pathogenicity H7N3 avian influenza in UK, including associated case of human conjunctivitis.

    J S Nguyen-Van-Tam;P Nair;P Acheson;A Baker

  • Circulating Influenza Virus, Climatic Factors, and Acute Myocardial Infarction: A Time Series Study in England and Wales and Hong Kong

    Charlotte Warren-Gash;Krishnan Bhaskaran;Andrew Hayward;Gabriel M. Leung

  • Evaluation of four real-time PCR assays for detection of influenza A(H1N1)v viruses.

    J Ellis;M Iturriza;R Allen;A Bermingham

  • Evidence of person-to-person transmission within a family cluster of novel coronavirus infections, United Kingdom, February 2013.

    Mamoona Tahir;Roger Gajraj;Madhu Bardhan;Huda Mohammed

Frequent Co-Authors

Maria Zambon
Maria Zambon Public Health England
Richard Pebody
Richard Pebody Public Health England
Nick Andrews
Nick Andrews Salk Institute for Biological Studies
Mary Ramsay
Mary Ramsay UK Health Security Agency
Shamez N. Ladhani
Shamez N. Ladhani UK Health Security Agency
Kevin E. Brown
Kevin E. Brown Public Health England
Chris Robertson
Chris Robertson University of Strathclyde
Gayatri Amirthalingam
Gayatri Amirthalingam Public Health England
Richard M. Myers
Richard M. Myers HudsonAlpha Institute for Biotechnology
Jonathan S. Nguyen-Van-Tam
Jonathan S. Nguyen-Van-Tam University of Nottingham

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