John Coia

8.0k total citations · 1 hit paper
104 papers, 3.8k citations indexed

About

John Coia is a scholar working on Infectious Diseases, Epidemiology and Food Science. According to data from OpenAlex, John Coia has authored 104 papers receiving a total of 3.8k indexed citations (citations by other indexed papers that have themselves been cited), including 56 papers in Infectious Diseases, 25 papers in Epidemiology and 21 papers in Food Science. Recurrent topics in John Coia's work include Viral gastroenteritis research and epidemiology (21 papers), Clostridium difficile and Clostridium perfringens research (21 papers) and Salmonella and Campylobacter epidemiology (20 papers). John Coia is often cited by papers focused on Viral gastroenteritis research and epidemiology (21 papers), Clostridium difficile and Clostridium perfringens research (21 papers) and Salmonella and Campylobacter epidemiology (20 papers). John Coia collaborates with scholars based in United Kingdom, Denmark and Ireland. John Coia's co-authors include Carole Fry, J.G. Anderson, H. Humphreys, S.J. MacGregor, David Edwards, M. Farrington, C. Mallaghan, G. Duckworth, D.R. Tucker and Derek Brown and has published in prestigious journals such as The Lancet, Nature Genetics and PLoS ONE.

In The Last Decade

John Coia

102 papers receiving 3.6k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

European Society of Clinical Microbiology and Infectious Diseases: 2021 update on the treatment guidance document for Clostridioides difficile infection in adults

2021 354 citations Joffrey van Prehn, Elena Reigadas et al. Clinical Microbiology and Infection profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
John Coia United Kingdom	33	2.0k	824	768	760	608	104	3.8k
Marie Louie Canada	34	1.7k 0.9×	769 0.9×	627 0.8×	940 1.2×	637 1.0×	107	3.8k
David R. Tribble United States	38	2.4k 1.2×	850 1.0×	862 1.1×	690 0.9×	544 0.9×	227	4.8k
Johannes Hüebner Germany	39	1.9k 1.0×	887 1.1×	726 0.9×	354 0.5×	1.6k 2.5×	136	4.8k
Denis Piérard Belgium	42	2.7k 1.3×	1.3k 1.6×	1.0k 1.3×	2.6k 3.5×	842 1.4×	258	6.1k
B. Cherie Millar United Kingdom	33	1.2k 0.6×	725 0.9×	563 0.7×	234 0.3×	679 1.1×	200	3.6k
Linda Chui Canada	31	1.7k 0.8×	1.0k 1.2×	731 1.0×	746 1.0×	511 0.8×	167	3.2k
Catrin E. Moore United Kingdom	35	2.0k 1.0×	1.5k 1.8×	402 0.5×	334 0.4×	1.3k 2.2×	106	5.3k
C. A. Hart United Kingdom	37	1.5k 0.7×	1.1k 1.3×	1.3k 1.7×	922 1.2×	728 1.2×	132	4.7k
Theresa J. Ochoa Peru	37	1.7k 0.8×	732 0.9×	691 0.9×	1.5k 2.0×	448 0.7×	185	4.3k
Pallab Ray India	37	1.3k 0.7×	1.2k 1.5×	330 0.4×	525 0.7×	1.2k 1.9×	261	5.1k

Countries citing papers authored by John Coia

Since Specialization

Citations

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

Fields of papers citing papers by John Coia

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John Coia

This figure shows the co-authorship network connecting the top 25 collaborators of John Coia. A scholar is included among the top collaborators of John Coia based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with John Coia. John Coia is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Jespersen, Magnus G., et al.. (2026). Distinct prophage infections in colorectal cancer-associated Bacteroides fragilis. Communications Medicine. 6(1).

Rebelo, Ana Rita, Valeria Bortolaia, Pimlapas Leekitcharoenphon, et al.. (2025). One day in Denmark: whole-genome sequence-based analysis of Escherichia coli isolates from clinical settings. Journal of Antimicrobial Chemotherapy. 80(4). 1011–1021.

Justesen, Ulrik Stenz, Mark Bremholm Ellebæk, Niels Qvist, et al.. (2024). Colorectal cancer and association with anaerobic bacteraemia: A Danish nationwide population-based cohort study. Journal of Infection. 89(2). 106212–106212. 1 indexed citations

Coia, John, Jørgen Engberg, Leif Percival Andersen, et al.. (2024). Impact of COVID-19 Restrictions on Incidence of Enteropathogenic Bacteria, Virus, and Parasites in Denmark: A National, Register-Based Study. Microorganisms. 12(6). 1224–1224. 2 indexed citations

Li, Zongbin, John Coia, Ming Chen, et al.. (2024). Comparative epidemiology of bacteraemia in two ageing populations: Singapore and Denmark. Epidemiology and Infection. 152. e74–e74. 2 indexed citations

Coia, John, Anna Christine Nilsson, Christian Nielsen, et al.. (2023). Low protection from breakthrough SARS-CoV-2 infection and mild disease course in ocrelizumab-treated patients with multiple sclerosis after three mRNA vaccine doses. Journal of Neurology Neurosurgery & Psychiatry. 94(11). 934–937. 8 indexed citations

Nielsen, Hans Linde, Peter Bytzer, John Coia, et al.. (2023). The incidence of laboratory-confirmed cases of enteric pathogens in Denmark 2018: a national observational study. Infectious Diseases. 55(5). 340–350. 5 indexed citations

Persson, Søren, Hans Linde Nielsen, John Coia, et al.. (2022). Sentinel surveillance and epidemiology of Clostridioides difficile in Denmark, 2016 to 2019. Eurosurveillance. 27(49). 10 indexed citations

Rebelo, Ana Rita, Tobias Ibfelt, Valeria Bortolaia, et al.. (2022). One Day in Denmark: Nationwide point-prevalence survey of human bacterial isolates and comparison of classical and whole-genome sequence-based species identification methods. PLoS ONE. 17(2). e0261999–e0261999. 9 indexed citations

10.

Gradel, Kim Oren, Thomas Stauffer Larsen, Henrik Frederiksen, et al.. (2022). Impact of C-reactive protein and albumin levels on short, medium, and long term mortality in patients with diffuse large B-cell lymphoma. Annals of Medicine. 54(1). 713–722. 11 indexed citations

11.

Prehn, Joffrey van, Elena Reigadas, Erik Vogelzang, et al.. (2021). European Society of Clinical Microbiology and Infectious Diseases: 2021 update on the treatment guidance document for Clostridioides difficile infection in adults. Clinical Microbiology and Infection. 27. S1–S21. 354 indexed citations breakdown →

12.

Hammerum, Anette M., Ulrik Stenz Justesen, Mette Pinholt, et al.. (2019). Surveillance of vancomycin-resistant enterococci reveals shift in dominating clones and national spread of a vancomycin-variable vanA Enterococcus faecium ST1421-CT1134 clone, Denmark, 2015 to March 2019. Eurosurveillance. 24(34). 49 indexed citations

13.

Inns, Thomas, Philip Ashton, Laura Herrera, et al.. (2016). Prospective use of whole genome sequencing (WGS) detected a multi-country outbreak ofSalmonellaEnteritidis. Epidemiology and Infection. 145(2). 289–298. 86 indexed citations

14.

Coia, John, Lisa M. Puchalski Ritchie, & Carole Fry. (2014). Use of respiratory and facial protection.. PubMed. 110(4). 18–20. 1 indexed citations

15.

Coia, John, Anil Adisesh, Catherine Booth, et al.. (2013). Guidance on the use of respiratory and facial protection equipment. Journal of Hospital Infection. 85(3). 170–182. 104 indexed citations

16.

Mather, Alison E., Matthew Denwood, Daniel T. Haydon, et al.. (2011). The Prevalences of Salmonella Genomic Island 1 Variants in Human and Animal Salmonella Typhimurium DT104 Are Distinguishable Using a Bayesian Approach. PLoS ONE. 6(11). e27220–e27220. 12 indexed citations

17.

Maclean, M., S.J. MacGregor, J.G. Anderson, et al.. (2010). Environmental decontamination of a hospital isolation room using high-intensity narrow-spectrum light. Journal of Hospital Infection. 76(3). 247–251. 87 indexed citations

18.

Pezzoli, Lorenzo, Richard Elson, C.L. Little, et al.. (2008). Packed with Salmonella —Investigation of an International Outbreak of Salmonella Senftenberg Infection Linked to Contamination of Prepacked Basil in 2007. Foodborne Pathogens and Disease. 5(5). 661–668. 77 indexed citations

19.

Pezzoli, Lorenzo, Richard Elson, C.L. Little, et al.. (2007). International outbreak of Salmonella Senftenberg in 2007. Weekly releases (1997–2007). 12(24). E070614.3–E070614.3. 37 indexed citations

20.

Stimson, Roland H., et al.. (2001). Positive predictive value of anti-neutrophil cytoplasmic antibody (ANCA) testing for ANCA-associated systemic vasculitis (AASV) in a routine clinical setting. Lara D. Veeken. 40. 124–124. 2 indexed citations

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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