John Elmerdahl Olsen

13.7k total citations
375 papers, 10.3k citations indexed

About

John Elmerdahl Olsen is a scholar working on Food Science, Endocrinology and Molecular Biology. According to data from OpenAlex, John Elmerdahl Olsen has authored 375 papers receiving a total of 10.3k indexed citations (citations by other indexed papers that have themselves been cited), including 165 papers in Food Science, 103 papers in Endocrinology and 82 papers in Molecular Biology. Recurrent topics in John Elmerdahl Olsen's work include Salmonella and Campylobacter epidemiology (148 papers), Antibiotic Resistance in Bacteria (71 papers) and Bacteriophages and microbial interactions (60 papers). John Elmerdahl Olsen is often cited by papers focused on Salmonella and Campylobacter epidemiology (148 papers), Antibiotic Resistance in Bacteria (71 papers) and Bacteriophages and microbial interactions (60 papers). John Elmerdahl Olsen collaborates with scholars based in Denmark, United Kingdom and Tanzania. John Elmerdahl Olsen's co-authors include Magne Bisgaard, Henrik Christensen, Anders Dalsgaard, Derek Brown, Luca Guardabassi, O. F. Rasmussen, Line Elnif Thomsen, Ana Herrero-Fresno, Frank M. Aarestrup and Jens Peter Christensen and has published in prestigious journals such as Circulation, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

John Elmerdahl Olsen

362 papers receiving 9.8k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
John Elmerdahl Olsen Denmark	52	4.2k	2.8k	2.3k	1.8k	1.6k	375	10.3k
Martin J. Woodward United Kingdom	57	3.6k 0.9×	2.1k 0.8×	3.1k 1.4×	2.0k 1.1×	1.4k 0.9×	227	9.0k
Ruiting Lan Australia	47	2.8k 0.7×	2.4k 0.8×	4.2k 1.9×	2.0k 1.1×	1.4k 0.9×	222	8.7k
Jaap A. Wagenaar Netherlands	65	5.8k 1.4×	3.0k 1.1×	1.6k 0.7×	2.3k 1.3×	1.8k 1.1×	317	14.3k
Thomas E. Besser United States	61	3.8k 0.9×	1.4k 0.5×	4.2k 1.9×	1.3k 0.7×	1.2k 0.7×	223	11.1k
Marc Heyndrickx Belgium	64	6.2k 1.5×	5.3k 1.9×	1.7k 0.7×	1.0k 0.6×	2.0k 1.2×	312	13.2k
Paula J. Fedorka–Cray United States	57	6.2k 1.5×	1.2k 0.4×	2.0k 0.9×	2.1k 1.2×	971 0.6×	237	9.4k
Patrick F. McDermott United States	63	6.4k 1.5×	2.3k 0.8×	3.1k 1.4×	4.9k 2.8×	1.8k 1.1×	157	11.9k
Lucas Domı́nguez Spain	54	2.1k 0.5×	2.1k 0.8×	1.3k 0.6×	1.3k 0.7×	910 0.6×	448	11.3k
John S. Gunn United States	54	3.2k 0.8×	4.2k 1.5×	2.9k 1.3×	2.1k 1.1×	1.3k 0.8×	139	9.4k
Peter Gerner‐Smidt United States	58	5.8k 1.4×	2.7k 1.0×	3.7k 1.6×	2.9k 1.6×	1.2k 0.7×	158	12.0k

Countries citing papers authored by John Elmerdahl Olsen

Since Specialization

Citations

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

Fields of papers citing papers by John Elmerdahl Olsen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John Elmerdahl Olsen

This figure shows the co-authorship network connecting the top 25 collaborators of John Elmerdahl Olsen. A scholar is included among the top collaborators of John Elmerdahl Olsen 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 Elmerdahl Olsen. John Elmerdahl Olsen 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

Olsen, John Elmerdahl, et al.. (2025). A sequencing-based method for quantifying gene-deletion mutants of bacteria in the intracellular environment. Frontiers in Microbiology. 15. 1487724–1487724.

Sosio, Margherita, Sonia I. Maffioli, Salvatore Pisanu, et al.. (2025). Screening Actinomycetes extracts for antimicrobial compounds against methicillin-resistant Staphylococcus aureus and helper-compounds against aminoglycoside-resistant E. coli. Open Research Europe. 5. 110–110. 2 indexed citations

Herrero-Fresno, Ana, et al.. (2025). Deletion of pcnB affects antibiotic susceptibility in resistant Escherichia coli by reducing copy number of ColE1-family plasmids. Scientific Reports. 15(1). 8432–8432. 1 indexed citations

Herrero-Fresno, Ana, Mauro de Mesquita Souza Saraiva, Nicole Bakkegård Goecke, et al.. (2025). Outer Membrane Proteins as Vaccine Targets Against Lawsonia intracellularis in Piglets. Vaccines. 13(2). 207–207.

Herrero-Fresno, Ana, Gang Liu, Søren Saxmose Nielsen, et al.. (2023). Effect of feeding dairy calves with milk fermented with selected probiotic strains on occurrence of diarrhoea, carriage of pathogenic and zoonotic microorganisms and growth performance. Veterinary Microbiology. 286. 109885–109885.

Schroll, Casper, Kaisong Huang, Jens Peter Christensen, et al.. (2023). The global transcriptomes of Salmonella enterica serovars Gallinarum, Dublin and Enteritidis in the avian host. Microbial Pathogenesis. 182. 106236–106236. 2 indexed citations

Jensen, Henrik Elvang, Søren Saxmose Nielsen, Mette Sif Hansen, et al.. (2023). Gastro-intestinal lesions are not relatable to diarrhoea or specific pathogens in post-weaning diarrhoea (PWD) in pigs. Acta veterinaria Scandinavica. 65(1). 30–30. 5 indexed citations

Ahmed, Shahana, et al.. (2021). The Effect of Colistin Treatment on the Selection of Colistin-Resistant Escherichia coli in Weaner Pigs. Antibiotics. 10(4). 465–465. 4 indexed citations

Græsbøll, Kaare, Inge Larsen, Julie Clasen, et al.. (2019). Effect of tetracycline treatment regimens on antibiotic resistance gene selection over time in nursery pigs. BMC Microbiology. 19(1). 269–269. 20 indexed citations

10.

Malakauskas, Mindaugas, et al.. (2017). Repetitive element sequence-based pcr typing for improved discrimination of Campylobacter Jejuni. Lithuanian University of Health Sciences. 1 indexed citations

11.

Katakweba, Abdul, Amandus P. Muhairwa, Athumani Msalale Lupindu, et al.. (2017). First Report on a Randomized Investigation of Antimicrobial Resistance in Fecal Indicator Bacteria from Livestock, Poultry, and Humans in Tanzania. Microbial Drug Resistance. 24(3). 260–268. 45 indexed citations

12.

Mtambo, M.M.A., et al.. (2017). Factors associated with acquisition of enteric episodes in cattle waste handlers in Morogoro, Tanzania.. Bulletin of animal health and production in Africa. 65(1). 7–15. 1 indexed citations

13.

Clasen, Julie, John Elmerdahl Olsen, Øystein Angen, et al.. (2016). Determining the optimal number of individual samples to pool for quantification of average herd levels of antimicrobial resistance genes in Danish pig herds using high-throughput qPCR. Veterinary Microbiology. 189. 46–51. 16 indexed citations

14.

Mlozi, M. R. S., M.M.A. Mtambo, & John Elmerdahl Olsen. (2015). Mindset of urban and peri-urban dairy cattle keepers in Morogoro, Tanga and Temeke Districts, Tanzania.. Livestock research for rural development. 27(2). 1 indexed citations

15.

Barco, Lisa, Alessandra Longo, Antonia Anna Lettini, et al.. (2014). Molecular Characterization of “Inconsistent” Variants of Salmonella Typhimurium Isolated in Italy. Foodborne Pathogens and Disease. 11(6). 497–499. 13 indexed citations

16.

Barco, Lisa, Enzo Cortini, Alessandra Longo, et al.. (2013). Molecular Characterization of Salmonella enterica Serovar 4,[5],12:i:- DT193 ASSuT Strains from Two Outbreaks in Italy. Foodborne Pathogens and Disease. 11(2). 138–144. 23 indexed citations

17.

Katakweba, Abdul, M.M.A. Mtambo, John Elmerdahl Olsen, & Amandus P. Muhairwa. (2012). Awareness of human health risks associated with the use of antibiotics among livestock keepers and factors that contribute to selection of antibiotic resistance bacteria within livestock in Tanzania. Research at the University of Copenhagen (University of Copenhagen). 21 indexed citations

18.

Mbuthia, P.G., et al.. (2005). Comparison of the Carrier Status of P. multocida Between Farm and Live Market Indigenous Birds. 29(1). 45–47. 1 indexed citations

19.

Heuer, Ole Eske, Karl Pedersen, Lars Jensen, M. Madsen, & John Elmerdahl Olsen. (2002). Persistence of Vancomycin-Resistant Enterococci (VRE) in Broiler Houses after the Avoparcin Ban. Microbial Drug Resistance. 8(4). 355–361. 55 indexed citations

20.

Jensen, Bo, et al.. (1994). The simultaneous production of amylase and lipase by the thermophilic fungus, Thermomyces lanuginosus.. 9. 299–302. 4 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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