Simon Thelwall

6.2k citations

19 papers · 2.4k indexed · 2 hit papers · h-index 9

Impact in

Modeling and Simulation top 0.5%
- COVID-19 epidemiological studies
Infectious Diseases top 0.5%
- SARS-CoV-2 and COVID-19 Research
- COVID-19 Clinical Research Studies
- SARS-CoV-2 detection and testing
- Viral gastroenteritis research and epidemiology

Papers in ⓘ

Infectious Diseases 12
- SARS-CoV-2 and COVID-19 Research 10
- COVID-19 Clinical Research Studies 9
- SARS-CoV-2 detection and testing 8
Epidemiology 4
- Urinary Tract Infections Management 2
- Sepsis Diagnosis and Treatment 1

Co-authors: Gavin Dabrera (8 shared papers)Jamie Lopez Bernal (5 shared papers)Eileen Gallagher (6 shared papers)Susan Hopkins (4 shared papers)Natalie Groves (6 shared papers)Richard Myers (5 shared papers)Meera Chand (5 shared papers)Nick Andrews (2 shared papers)
Journals: Epidemiology and Infection (3 papers)Clinical Microbiology and Infection (2 papers)Influenza and Other Respiratory Viruses (2 papers)Eurosurveillance (2 papers)Nature Communications (1 paper)
Partner nations: United Kingdom Norway Sweden

In The Last Decade

Simon Thelwall

18 papers receiving 2.4k citations

Hit Papers

align trajectories log scale

Hospital admission and emergency care attendance risk for SARS-CoV-2 delta (B.1.617.2) compared with alpha (B.1.1.7) variants of concern: a cohort study 2021 · 372 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2021 Cronfa (Swansea University)
2021 New England Journal of Medicine

Peers

Countries citing papers authored by Simon Thelwall

Since Specialization

Citations

This map shows the geographic impact of Simon Thelwall's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Simon Thelwall with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Simon Thelwall more than expected).

Fields of papers citing papers by Simon Thelwall

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Simon Thelwall. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Simon Thelwall. The network helps show where Simon Thelwall may publish in the future.

Co-authors

The 25 scholars most cited alongside Simon Thelwall, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Simon Thelwall Line = papers co-authored together Simon Thelwall links everyone, so they are left out of the graph.

All Works

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19 of 19 papers shown

#	Work
1	Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant New England Journal of Medicine ·Jamie Lopez Bernal, Nick Andrews, Charlotte Gower, Eileen Gallagher, Ruth Simmons, Simon Thelwall, Julia Stowe, Elise Tessier, Natalie Groves, Gavin Dabrera, Richard Myers, Colin Campbell, Gayatri Amirthalingam, Matt Edmunds, Maria Zambon, Kevin Brown, Susan Hopkins, Meera Chand, Mary Ramsay Hit paper breakdown →	2021	1738
2	Hospital admission and emergency care attendance risk for SARS-CoV-2 delta (B.1.617.2) compared with alpha (B.1.1.7) variants of concern: a cohort study Cronfa (Swansea University) ·Katherine A. Twohig, Tommy Nyberg, Asad Zaidi, Simon Thelwall, Mary Sinnathamby, Shirin Aliabadi, Shaun R. Seaman, Ross Harris, Russell Hope, Jamie Lopez Bernal, Eileen Gallagher, André Charlett, Daniela De Angelis, Anne M. Presanis, Gavin Dabrera Hit paper breakdown →	2021	372
3	Impact of obesity on the risk of wound infection following surgery: results from a nationwide prospective multicentre cohort study in England Clinical Microbiology and Infection ·Simon Thelwall, Pauline Harrington, Elizabeth Sheridan, Theresa Lamagni	2015	112
4	Healthcare-associated COVID-19 in England: A national data linkage study Journal of Infection ·Alex Bhattacharya, Simon M. Collin, James Stimson, Simon Thelwall, Olisaeloka Nsonwu, Sarah Gerver, Julie V. Robotham, Mark H. Wilcox, Susan Hopkins, Russell Hope	2021	39
5	National surveillance of bacterial and fungal coinfection and secondary infection in COVID-19 patients in England: lessons from the first wave Clinical Microbiology and Infection ·Sarah Gerver, Rebecca Guy, Kate Wilson, Simon Thelwall, Olisaeloka Nsonwu, Graeme Rooney, Colin Brown, Berit Müller‐Pebody, Russell Hope, Victoria Hall	2021	33
6	Improving feedback of surveillance data on antimicrobial consumption, resistance and stewardship in England: putting the data at your Fingertips Journal of Antimicrobial Chemotherapy ·Alan P. Johnson, Berit Müller‐Pebody, Emma Budd, Diane Ashiru‐Oredope, David Ladenheim, Doris Hain, Russell Hope, Alex Bhattacharya, Suzanne Elgohari, Rebecca Guy, Katherine L. Henderson, Richard Puleston, Graeme Rooney, Simon Thelwall, Edgar Wellington, Theresa Lamagni, Susan Hopkins	2016	27
7	Quantifying the Burden of Hospital-Acquired Bloodstream Infection in Children in England by Estimating Excess Length of Hospital Stay and Mortality Using a Multistate Analysis of Linked, Routinely Collected Data Journal of the Pediatric Infectious Diseases Society ·Nathan Green, Alan P. Johnson, Katherine L. Henderson, Berit Müller‐Pebody, Simon Thelwall, Julie V. Robotham, Mike Sharland, Martin Wolkewitz, Sarah R Deeny	2014	19
8	Hospitalisation and mortality risk of SARS-COV-2 variant omicron sub-lineage BA.2 compared to BA.1 in England Nature Communications ·Harriet Webster, Tommy Nyberg, Mary Sinnathamby, Nurin Abdul Aziz, Neil M. Ferguson, Giulia Seghezzo, Paula Blomquist, Jessica R. E. Bridgen, Meera Chand, Natalie Groves, Richard Myers, Russell Hope, Efejiro Ashano, Jamie Lopez Bernal, Daniela De Angelis, Gavin Dabrera, Anne M. Presanis, Simon Thelwall	2022	18
9	Comparison of the risk of hospitalisation among BA.1 and BA.2 COVID‐19 cases treated with sotrovimab in the community in England Influenza and Other Respiratory Viruses ·Katie Harman, Sophie Nash, Harriet Webster, Natalie Groves, Jo Hardstaff, Jessica R. E. Bridgen, Paula Blomquist, Russell Hope, Efejiro Ashano, Richard Myers, Sakib Rokadiya, Susan Hopkins, Colin Brown, Meera Chand, Gavin Dabrera, Simon Thelwall	2023	14
10	Epidemiology of COVID-19 in Prisons, England, 2020 Emerging infectious diseases ·Wendy Rice, Dimple Chudasama, James Lewis, Francis Senyah, Isaac Florence, Simon Thelwall, Lisa Glaser, Maciej Czachorowski, Emma Plugge, Hilary Kirkbride, Gavin Dabrera, Theresa Lamagni	2021	7
11	Hospitalization and Mortality Risk for COVID-19 Cases With SARS-CoV-2 AY.4.2 (VUI-21OCT-01) Compared to Non-AY.4.2 Delta Variant Sublineages The Journal of Infectious Diseases ·Tommy Nyberg, Katie Harman, Asad Zaidi, Shaun R. Seaman, Nick Andrews, Sophie Nash, André Charlett, Jamie Lopez Bernal, Richard Myers, Natalie Groves, Eileen Gallagher, Saheer E. Gharbia, Meera Chand, Simon Thelwall, Daniela De Angelis, Gavin Dabrera, Anne M. Presanis	2022	6
12	Trends in rates of incidence, fatality and antimicrobial resistance among isolates of Pseudomonas spp. causing bloodstream infections in England between 2009 and 2018: results from a national voluntary surveillance scheme Journal of Hospital Infection ·Sarah Gerver, Olisaeloka Nsonwu, Simon Thelwall, Colin Brown, Russell Hope	2021	6
13	A standardised protocol for relative SARS-CoV-2 variant severity assessment, applied to Omicron BA.1 and Delta in six European countries, October 2021 to February 2022 Eurosurveillance ·Tommy Nyberg, Peter Bager, Ingrid Bech Svalgaard, Dritan Bejko, Nick Bundle, Josie Evans, Tyra Grove Krause, Jim McMenamin, Joël Mossong, Heather M. Mutch, Ajibola Omokanye, André Peralta‐Santos, Pedro Pinto Leite, Jostein Starrfelt, Simon Thelwall, Lamprini Veneti, Robert J. Whittaker, John Wood, Richard Pebody, Anne M. Presanis	2023	3
14	Incidence, case-fatality rates and risk factors of bloodstream infections caused by Escherichia coli, Klebsiella species and Pseudomonas aeruginosa, England, April 2017 to March 2022 Eurosurveillance ·Olisaeloka Nsonwu, Simon Thelwall, Sarah Gerver, Rebecca Guy, Dimple Chudasama, Russell Hope	2025	2
15	Representativeness of whole-genome sequencing approaches in England: the importance for understanding inequalities associated with SARS-CoV-2 infection Epidemiology and Infection ·Katherine A. Twohig, Katie Harman, Asad Zaidi, Shirin Aliabadi, Sophie Nash, Mary Sinnathamby, Ian Harrison, Eileen Gallagher, Natalie Groves, Frank Schwach, Clare Pearson, Alicia Thornton, Richard Myers, Meera Chand, Simon Thelwall, Gavin Dabrera	2023	1
16	Epidemiology of invasive Escherichia coli disease in adults in England, 2013–2017 Epidemiology and Infection ·Maxim Blum, Jeroen Geurtsen, Eva Herweijer, Michal Sarnecki, Bart Spiessens, Gil Reynolds Diogo, Peter W. M. Hermans, Simon Thelwall, Alex Bhattacharya, Thomas Verstraeten, Jan Poolman, Russell Hope	2025	1
17	Descriptive epidemiology of SARS‐CoV‐2 Beta (B.1.351) variant cases in England, December 2020 to June 2022 Influenza and Other Respiratory Viruses ·Mary Sinnathamby, Asad Zaidi, Katherine A. Twohig, Shirin Aliabadi, Nurin Abdul Aziz, Natalie Groves, Eileen Gallagher, Simon Thelwall, Gavin Dabrera	2023	1
18	Risk of severe outcomes among Omicron sub-lineages BA.4.6, BA.2.75, and BQ.1 compared to BA.5 in England Epidemiology and Infection ·Giulia Seghezzo, Sophie Nash, Nurin Abdul Aziz, Russell Hope, Jamie Lopez Bernal, Eileen Gallagher, Gavin Dabrera, Simon Thelwall	2023	1
19	A Standardised Protocol for Assessment of Relative SARS-CoV-2 Variant Severity, with Application to Severity Risk for COVID-19 Cases Infected with Omicron BA.1 Compared to Delta Variants in six European Countries SSRN Electronic Journal ·Tommy Nyberg, Peter Bager, Ingrid Bech Svalgaard, Dritan Bejko, Nick Bundle, Josie Evans, Tyra Grove Krause, Jim McMenamin, Joël Mossong, Heather Mutch, Ajibola Omokanye, André Peralta‐Santos, Pedro Pinto Leite, Jostein Starrfelt, Simon Thelwall, Lamprini Veneti, Robert Whittaker, John Wood, Richard Pebody, Anne M. Presanis	2023	0

About Simon Thelwall

Simon Thelwall is a scholar working on Infectious Diseases, Epidemiology, Applied Microbiology and Biotechnology, Molecular Biology and Modeling and Simulation, having authored 19 papers that have together received 2.4k indexed citations. Recurring topics across this work include SARS-CoV-2 and COVID-19 Research (10 papers), COVID-19 Clinical Research Studies (9 papers), SARS-CoV-2 detection and testing (8 papers), Antibiotic Use and Resistance (4 papers), COVID-19 epidemiological studies (3 papers), Antibiotic Resistance in Bacteria (2 papers), Urinary Tract Infections Management (2 papers) and Sepsis Diagnosis and Treatment (1 paper). The work is most often cited by research in Modeling and Simulation (581 citations), Infectious Diseases (1.9k citations), Health (608 citations), Applied Microbiology and Biotechnology (59 citations) and Animal Science and Zoology (149 citations). Simon Thelwall has collaborated with scholars based in United Kingdom, Norway and Sweden. Frequent co-authors include Gavin Dabrera, Jamie Lopez Bernal, Eileen Gallagher, Susan Hopkins, Natalie Groves, Richard Myers, Meera Chand, Nick Andrews, Charlotte Gower and Ruth Simmons. Their work appears in journals such as Epidemiology and Infection, Clinical Microbiology and Infection, Influenza and Other Respiratory Viruses, Eurosurveillance and Nature Communications.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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