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John Elmerdahl Olsen

John Elmerdahl Olsen

D-Index & Metrics

Microbiology

D-Index
69
Citations
15290
World Ranking
2073
National Ranking
29

Overview

John Elmerdahl Olsen is affiliated with the University of Copenhagen in Denmark and has an extensive research background primarily in the fields of Biochemistry, Genetics and Molecular Biology, Medicine, and Agricultural and Biological Sciences. Their work spans several subfields including Endocrinology, Food Science, Molecular Biology, Infectious Diseases, and Molecular Medicine.

The scientist's research topics focus on areas such as Salmonella and Campylobacter epidemiology, Antibiotic Resistance in Bacteria, Escherichia coli research studies, Bacteriophages and microbial interactions, Vibrio bacteria research studies, Viral gastroenteritis research and epidemiology, and Bacterial Genetics and Biotechnology.

Recent notable papers authored or co-authored by Olsen include:

  • Antimicrobial-induced horizontal transfer of antimicrobial resistance genes in bacteria: a mini-review (2021, Journal of Antimicrobial Chemotherapy)
  • Post-weaning diarrhea in pigs weaned without medicinal zinc: risk factors, pathogen dynamics, and association to growth rate (2021, Porcine Health Management)
  • Prevalence and risk factors of Salmonella in commercial poultry farms in Nigeria (2020, PLoS ONE)
  • Indications for the use of highest priority critically important antimicrobials in the veterinary sector (2020, Journal of Antimicrobial Chemotherapy)
  • F4- and F18-Positive Enterotoxigenic Escherichia coli Isolates from Diarrhea of Postweaning Pigs: Genomic Characterization (2020, Applied and Environmental Microbiology)

Olsen has frequently published in several scientific venues, including:

  • Antibiotics
  • Frontiers in Microbiology
  • Veterinary Microbiology
  • Scientific Reports
  • Porcine Health Management

Frequent co-authors with whom Olsen has collaborated include Ana Herrero-Fresno, Henrik Christensen, Eglė Kudirkienė, Anders Dalsgaard, and Vanesa García.

Best Publications

  • Host adapted serotypes of Salmonella enterica.

    Sergio Uzzau;Derek J. Brown;Timothy S. Wallis;Salvatore Rubino

  • Taxonomic relationships of the [Pasteurella] haemolytica complex as evaluated by DNA-DNA hybridizations and 16S rRNA sequencing with proposal of Mannheimia haemolytica gen. nov., comb. nov., Mannheimia granulomatis comb. nov., Mannheimia glucosida sp. nov., Mannheimia ruminalis sp. nov. and Mannheimia varigena sp. nov.

    Øystein Angen;Reinier Mutters;Dominique A. Caugant;John E. Olsen

  • Antibiotic Resistance in Acinetobacter spp. Isolated from Sewers Receiving Waste Effluent from a Hospital and a Pharmaceutical Plant

    Luca Guardabassi;Andreas Petersen;John E. Olsen;Anders Dalsgaard

  • Salmonella identification by the polymerase chain reaction

    John Elmerdahl Olsen;Soren Aabo;Lone Rossen;Ole Feldballe Rasmussen

  • Listeria monocytogenes exists in at least three evolutionary lines: evidence from flagellin, invasive associated protein and listeriolysin O genes

    Ole F. Rasmussen;Pernille Skouboe;Lone Dons;Lone Rossen

  • Diversity and evolution of blaZ from Staphylococcus aureus and coagulase-negative staphylococci

    John Elmerdahl Olsen;Henrik Christensen;Frank Møller Aarestrup

  • Clonal lines of Salmonella enterica serotype Enteritidis documented by IS200-, ribo-, pulsed-field gel electrophoresis and RFLP typing.

    J. E. Olsen;Marianne N. Skov;E. J. Threlfall;D. J. Brown

  • Distribution and in-vitro transfer of tetracycline resistance determinants in clinical and aquatic Acinetobacter strains

    L. Guardabassi;L. Dijkshoorn;J.-M. Collard;J.E. Olsen

  • Probes and polymerase chain reaction for detection of food-borne bacterial pathogens.

    J.E Olsen;S Aabo;W Hill;S Notermans

  • Rapid quantification of viable Campylobacter bacteria on chicken carcasses, using real-time PCR and propidium monoazide treatment, as a tool for quantitative risk assessment.

    Mathilde Hartmann Josefsen;Charlotta Löfström;Tina Beck Hansen;Laurids Siig Christensen

  • DNA-DNA hybridization determined in micro-wells using covalent attachment of DNA.

    Henrik Christensen;OØystein Angen;Reinier Mutters;John E. Olsen

  • Genetic relationships among avian isolates classified as Pasteurella haemolytica, 'Actinobacillus salpingitidis' or Pasteurella anatis with proposal of Gallibacterium anatis gen. nov., comb. nov. and description of additional genomospecies within Gallibacterium gen. nov.

    Henrik Christensen;Magne Bisgaard;Anders Miki Bojesen;Reinier Mutters

  • Productivity of local chickens under village management conditions.

    N.A. Mwalusanya;A.M. Katule;S.K. Mutayoba;M.M.A. Mtambo

  • Role of Flagellin and the Two-Component CheA/CheY System of Listeria monocytogenes in Host Cell Invasion and Virulence

    Lone Dons;Emma Eriksson;Yuxuan Jin;Martin E. Rottenberg

  • Differentiation of Shewanella putrefaciens and Shewanella alga on the basis of whole-cell protein profiles, ribotyping, phenotypic characterization, and 16S rRNA gene sequence analysis.

    Birte Fonnesbech Vogel;Kirsten Jørgensen;Henrik Christensen;John Elmerdahl Olsen

  • Bacterial decimation times in anaerobic digestions of animal slurries

    John Elmerdahl Olsen;Holger Errebo Larsen

  • Comparative phylogenies of the housekeeping genes atpD, infB and rpoB and the 16S rRNA gene within the Pasteurellaceae.

    Henrik Christensen;Peter Kuhnert;John Elmerdahl Olsen;Magne Bisgaard

  • Cloning and characterization of a gene encoding flagellin of Listeria monocytogenes

    L. Dons;O.F. Rasmussen;J.E. Olsen

  • Polyamines are required for virulence in Salmonella enterica serovar Typhimurium.

    Lotte Jelsbak;Line Elnif Thomsen;Inke Wallrodt;Peter Ruhdal Jensen

  • Cross‐contamination with Salmonella on a broiler slaughterhouse line demonstrated by use of epidemiological markers

    J.E. Olsen;D.J. Brown;M. Madsen;M. Bisgaard

  • Is characterization of a single isolate sufficient for valid publication of a new genus or species? Proposal to modify recommendation 30b of the Bacteriological Code (1990 Revision).

    Henrik Christensen;Magne Bisgaard;Wilhelm Frederiksen;Reinier Mutters

Frequent Co-Authors

Magne Bisgaard
Magne Bisgaard Bisgaard Consulting
Henrik Christensen
Henrik Christensen University of Copenhagen
Anders Dalsgaard
Anders Dalsgaard University of Copenhagen
Jens Peter Christensen
Jens Peter Christensen University of Copenhagen
Derek J. Brown
Derek J. Brown Stobhill Hospital
Luca Guardabassi
Luca Guardabassi University of Copenhagen
Frank Møller Aarestrup
Frank Møller Aarestrup Technical University of Denmark
Dorte Lau Baggesen
Dorte Lau Baggesen Technical University of Denmark
Søren Saxmose Nielsen
Søren Saxmose Nielsen University of Copenhagen
Karl Pedersen
Karl Pedersen Aarhus University

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