Andrew Walker

3.1k citations

28 papers · 2.0k indexed · 3 hit papers · h-index 16

Impact in

Infectious Diseases top 1%
- Clostridium difficile and Clostridium perfringens research
- SARS-CoV-2 and COVID-19 Research
- COVID-19 Clinical Research Studies
- Viral gastroenteritis research and epidemiology
- Antimicrobial Resistance in Staphylococcus
Clinical Biochemistry top 2%
- Bacterial Identification and Susceptibility Testing

Papers in

Infectious Diseases 14
- Clostridium difficile and Clostridium perfringens research 6
- Antimicrobial Resistance in Staphylococcus 4
- SARS-CoV-2 and COVID-19 Research 3
Virology 3
- HIV Research and Treatment 3

Co-authors: Tim Peto Derrick W. Crook David W. Eyre Tanya Golubchik Mark H. Wilcox Rory Bowden Koen B. Pouwels Xavier Didelot
Journals: Clinical Infectious Diseases (2 papers)Journal of Medical Microbiology (2 papers)Annals of Emergency Medicine (2 papers)The Lancet Microbe (2 papers)The Journal of Infectious Diseases (2 papers)
Partner nations: United Kingdom United States Australia

In The Last Decade

Andrew Walker

25 papers receiving 1.9k citations

Hit Papers

align trajectories log scale

Trajectory of long covid symptoms after covid-19 vaccination: community based cohort study 2022 · 238 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.

2022 BMJ
2021 Nature Medicine
2013 New England Journal of Medicine

Peers

Countries citing papers authored by Andrew Walker

Since Specialization

Citations

This map shows the geographic impact of Andrew Walker'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 Andrew Walker with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Andrew Walker more than expected).

Fields of papers citing papers by Andrew Walker

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Andrew Walker. 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 Andrew Walker. The network helps show where Andrew Walker may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Andrew Walker, 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 Andrew Walker Line = papers co-authored together Andrew Walker links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Estimating the association of antimicrobial resistance genes with minimum inhibitory concentration in Escherichia coli: an observational study The Lancet Microbe ·Samuel Lipworth, Kevin Chau, Sarah Oakley, Lucinda Barrett, Derrick W. Crook, Tim Peto, Andrew Walker, Nicole Stoesser	2025	0
2	Exploring uncatalogued genetic variation in antimicrobial resistance gene families in Escherichia coli: an observational analysis The Lancet Microbe ·Samuel Lipworth, Derrick W. Crook, Andrew Walker, Tim Peto, Nicole Stoesser	2024	2
3	Instability of the HLA-E peptidome of HIV presents a major barrier to therapeutic targeting Molecular Therapy ·Franz Hüttner, Tiaan Heunis, بلحاج العربي, А.В. Костромицких, Arend Niks, Marcin Dembek, Gabriel Markovich, E. Tukenmez, Wang Hong-lu, Y. J. Kim, Heather L. Papinchak, Luis Umbría Acosta, Darren B. Leneghan, Luís F. Godinho, Andrew Walker, Shawn Devilla, Flavie Didier, Sarah Leonard, Lucy Dorrell	2024	6
4	Developing a framework for tracking antimicrobial resistance gene movement in a persistent environmental reservoir SHILAP Revista de lepidopterología ·Amy J. Mathers, Chaoyang Chen, Yaung Iee Lim, Ulwiyatul Hidayat, Nicole Stoesser, David W. Eyre, Andrew Walker, Katie E. Barry, Maria Arim, Fenix W. D. Huang, Hardik I. Parikh, Shireen Kotay, Derrick W. Crook, Christian M. Reidys	2024	2
5	Estimating the Effectiveness of First Dose of COVID-19 Vaccine Against Mortality in England: A Quasi-Experimental Study American Journal of Epidemiology ·Charlotte Bermingham, Jasper Morgan, Daniel Ayoubkhani, Myer Glickman, Nazrul Islam, Aziz Sheikh, Jonathan A C Sterne, Andrew Walker, Vahé Nafilyan	2022	7
6	Effect of Delta variant on viral burden and vaccine effectiveness against new SARS-CoV-2 infections in the UK Nature Medicine ·Koen B. Pouwels, Emma Pritchard, Philippa C. Matthews, Nicole Stoesser, David W. Eyre, Karina-Doris Vihta, Thomas House, Jodie Hay, John I. Bell, John Newton, Jeremy Farrar, Derrick W. Crook, Duncan Cook, Emma Rourke, Ruth Studley, Tim Peto, Ian Diamond, Andrew Walker Hit paper breakdown →	2021	330
7	Reverse immunodynamics: a new method for identifying targets of protective immunity Scientific Reports ·M. A. Volchek, Paul S. Wikramaratna, Bridget S. Penman, Andrew Walker, Adrian L. Smith, Oliver G. Pybus, Létitia Jean, Sunetra Gupta, José Lourenço	2019	3
8	Comparison of Control of Clostridium difficile Infection in Six English Hospitals Using Whole-Genome Sequencing Clinical Infectious Diseases ·David W. Eyre, Warren N. Fawley, E. Zabski, C. Settle, Zhiyan Xiong, Simon Goldenberg, Susan Dawson, Derrick W. Crook, Tim Peto, Andrew Walker, Mark H. Wilcox	2017	32
9	Karyotype studies on grape phylloxera (Daktulosphaira vitifoliae FITCH) Federal Research Centre for Cultivated Plants (Julius Kühn-Institut) ·Astrid Forneck, Ye Jin, Andrew Walker, R. Blaich	2015	4
10	Reduction of Invasive Pneumococcal Disease 3 Years After the Introduction of the 13-Valent Conjugate Vaccine in the Oxfordshire Region of England The Journal of Infectious Diseases ·Catrin E. Moore, John R. Paul, Dona Foster, Saeed Ahmed Mahar, David Griffiths, Kyle Knox, Tim Peto, Andrew Walker, Derrick W. Crook	2014	67
11	Optimal CD4 Count for Initiating HIV Treatment Epidemiology ·Fiona M Ewings, Deborah Ford, Andrew Walker, James R. Carpenter, Andrew Copas	2014	6
12	Diverse Sources of C. difficile Infection Identified on Whole-Genome Sequencing New England Journal of Medicine ·David W. Eyre, Madeleine Cule, Daniel J. Wilson, David Griffiths, Alison Vaughan, Lily O’Connor, Camilla L. C. Ip, Tanya Golubchik, Elizabeth M. Batty, John Finney, David Wyllie, Xavier Didelot, Paolo Piazza, Rory Bowden, Kate E. Dingle, Rosalind M. Harding, Derrick W. Crook, Mark H. Wilcox, Tim Peto, Andrew Walker Hit paper breakdown →	2013	487
13	Clostridium difficilesurveillance: harnessing new technologies to control transmission Expert Review of Anti-infective Therapy ·David W. Eyre, Andrew Walker	2013	17
14	Evolutionary History of the Clostridium difficile Pathogenicity Locus Genome Biology and Evolution ·Kate E. Dingle, Briony Elliott, Esther Robinson, David Griffiths, David W. Eyre, Nicole Stoesser, Alison Vaughan, Tanya Golubchik, Warren N. Fawley, Mark H. Wilcox, Tim Peto, Andrew Walker, Thomas V. Riley, Derrick W. Crook, Xavier Didelot	2013	139
15	Whole-Genome Sequencing Shows That Patient-to-Patient Transmission Rarely Accounts for Acquisition of Staphylococcus aureus in an Intensive Care Unit Clinical Infectious Diseases ·James Price, Tanya Golubchik, Kevin Cole, D Prevedorou, Derrick W. Crook, Guy Thwaites, Rory Bowden, Andrew Walker, Tim Peto, John R. Paul, Martin Llewelyn	2013	118
16	A pilot study of rapid benchtop sequencing of Staphylococcus aureus and Clostridium difficile for outbreak detection and surveillance BMJ Open ·David W. Eyre, Tanya Golubchik, N Claire Gordon, Rory Bowden, Paolo Piazza, Elizabeth M. Batty, Camilla L. C. Ip, Daniel J. Wilson, Xavier Didelot, Lily O’Connor, Joe Lemaster, David Buck, Angela Kearns, Angela Shaw, John R. Paul, Mark H. Wilcox, Peter Donnelly, Tim Peto, Andrew Walker, Derrick W. Crook	2012	192
17	Reduction in invasive pneumococcal disease following implementation of the conjugate vaccine in the Oxfordshire region, England Journal of Medical Microbiology ·Dona Foster, Andrew Walker, John R. Paul, David Griffiths, Kyle Knox, Tim Peto, Derrick W. Crook, (unknown)	2010	28
18	Viral Rebound and Emergence of Drug Resistance in the Absence of Viral Load Testing: A Randomized Comparison between Zidovudine‐Lamivudine plus Nevirapine and Zidovudine‐Lamivudine plus Abacavir The Journal of Infectious Diseases ·N. Ndembi, Ruth Goodall, David Dunn, Adele McCormick, Andy Burke, Fred Lyagoba, Paula Munderi, Fuziko Oomine, Cissy Kityo, Val J. Robertson, David Yirrell, Andrew Walker, Diana M. Gibb, Charles F. Gilks, Pontiano Kaleebu, Deenan Pillay	2009	43
19	Invasive pneumococcal disease: epidemiology in children and adults prior to implementation of the conjugate vaccine in the Oxfordshire region, England Journal of Medical Microbiology ·Dona Foster, Kyle Knox, Andrew Walker, David Griffiths, Ornella Roat, Elizabeth Haworth, Tim Peto, Angela B. Brueggemann, Derrick W. Crook, (unknown)	2008	32
20	Decline in sperm counts: an artefact of changed reference range of “normal”? BMJ ·Cem Akaltan, Jacques Cohen, Tom VanDiepen, Andrew Walker	1994	107

About Andrew Walker

Andrew Walker is a scholar working on Infectious Diseases, Virology, Molecular Medicine, Clinical Biochemistry and Applied Microbiology and Biotechnology, having authored 28 papers that have together received 2.0k indexed citations. Recurring topics across this work include Clostridium difficile and Clostridium perfringens research (6 papers), Antimicrobial Resistance in Staphylococcus (4 papers), Bacterial Identification and Susceptibility Testing (4 papers), SARS-CoV-2 and COVID-19 Research (3 papers), Respiratory viral infections research (3 papers), HIV Research and Treatment (3 papers), Pneumonia and Respiratory Infections (3 papers) and Mosquito-borne diseases and control (3 papers). The work is most often cited by research in Infectious Diseases (1.3k citations), Clinical Biochemistry (217 citations), Modeling and Simulation (144 citations), Critical Care and Intensive Care Medicine (161 citations) and Molecular Medicine (106 citations). Andrew Walker has collaborated with scholars based in United Kingdom, United States and Australia. Frequent co-authors include Tim Peto, Derrick W. Crook, David W. Eyre, Tanya Golubchik, Mark H. Wilcox, Rory Bowden, Koen B. Pouwels, Xavier Didelot, Lily O’Connor and David Griffiths. Their work appears in journals such as Clinical Infectious Diseases, Journal of Medical Microbiology, Annals of Emergency Medicine, The Lancet Microbe and The Journal of Infectious Diseases.

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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