John Elmerdahl Olsen

John Elmerdahl Olsen

Professor

Member of:

    ORCID: 0000-0001-6225-6587

    Publication year:
    All
    1 - 100 out of 489Page size: 100
    Sort by: 1st author
    1. Published

      Evaluation of a Salmonella‐specific DNA probe by colony hybridization using non‐isotopic and isotopic labeling

      AABO, S., THOMAS, A., HALL, M. L. M., SMITH, H. R. & Olsen, John Elmerdahl, Jul 1992, In: APMIS. 100, 7-12, p. 623-628 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    2. Published

      Characterization of non-virulence plasmids with homology to the virulence plasmid of Salmonella dublin

      Aabo, S., Olsen, John Elmerdahl, Threlfall, E. J. & Brown, D. J., 1995, In: Research in Microbiology. 146, p. 751-759 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    3. Published

      Salmonella identification by the polymerase chain reaction

      Aabo, S., Rasmussen, O. F., Roseen, L., Sørensen, P. D. & Olsen, John Elmerdahl, Jun 1993, In: Molecular and Cellular Probes. 7, 3, p. 171-178 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    4. Published

      Quantitative comparison of intestinal invasion of zoonotic serotypes of Salmonella enterica in poultry

      Aabo, S., Christensen, Jens Peter, Chadfield, M. S., Carstensen, B., Olsen, John Elmerdahl & Bisgaard, M., 2002, In: Avian Pathology. 31, 1, p. 41-47 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    5. Published

      Development of an in vivo model for study of intestinal invasion by Salmonella enterica in chickens

      Aabo, S., Christensen, Jens Peter, Chadfield, M. S., Carstensen, B., Jensen, T. K., Bisgaard, M. & Olsen, John Elmerdahl, 2000, In: Infection and Immunity. 68, 12, p. 7122-7125 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    6. Published

      Virulence characterization of a strain of Salmonella enterica subspecies houten (subspecies iv) with chromosomal integrated Salmonella plasmid virulence (spv) genes

      Aabo, S., Brown, D. J. & Olsen, John Elmerdahl, 2000, In: Research in Microbiology. 151, p. 183-189 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    7. Published

      Research note: Detection of Salmonella in minced meat by the polymerase chain reaction method

      Aabo, S., Andersen, J. K. & Olsen, John Elmerdahl, Sep 1995, In: Letters in Applied Microbiology. 21, 3, p. 180-182 3 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    8. Published

      Survival of Salmonella and physiological response to cold storage of beef

      Aabo, S., Knudsen, G. M. & Olsen, John Elmerdahl, 2008, The 21st International ICFMH Symposium "Evolving Microbial Food Quality and Safety". IUMS/ICFMH, p. 161 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

    9. Published

      Salmonella og Yersinia - bekæmpelsesmuiligheder: 2.2

      Aabo, S., Christensen, H., Christiansen, P., Jensen, Jørgen Dejgård, Morild, R. K., Lawson, G. L., Olsen, John Elmerdahl & Sørensen, A. M. H., 2009, Fremtidens fødevaresikkerhed - nye veje mod sikrere kød i Danmark. Rosenquist, H., Sandøe, P., Tveit, G., Wingstrand, A. & Aabo, S. (eds.). Center for Bioetik og Risikovurdering, p. 70-86 17 p.

      Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research

    10. Published

      Prevalence of antibiotic‐resistant Escherichia coli in Danish pigs and cattle

      Aalbæk, Bent & Olsen, John Elmerdahl, Jul 1991, In: APMIS. 99, 7-12, p. 1103-1110 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    11. Published

      Antibiotikumresistente Escherichia coli i tarmfloraen hos danske svin og kalve i perioden 1970-1988

      Aalbæk, Bent, Olsen, John Elmerdahl, Nielsen, B., Larsen, J. L., Sørensen, M., Errebo Larsen, H. & Rasmussen, J., 1995, In: Dansk Veterinærtidsskrift. 78, 20, p. 1026-1029 4 p.

      Research output: Contribution to journal › Journal article › Research

    12. Published

      Whole-genome sequence of Staphylococcus aureus S54F9 isolated from a chronic disseminated porcine lung abscess and used in human infection models

      Aalbæk, Bent, Jensen, Louise Kruse, Jensen, Henrik Elvang, Olsen, John Elmerdahl & Christensen, Henrik, 2015, In: Genome Announcements. 3, 5, 2 p., e01207-15.

      Research output: Contribution to journal › Journal article › Research › peer-review

    13. Published

      Bakteriel resistens overfor desinfektionsmidler

      Aarestrup, F. M., Hasman, H. & Olsen, John Elmerdahl, 2001, In: Dansk Veterinærtidsskrift. 84, 21, p. 6-13 8 p.

      Research output: Contribution to journal › Journal article › Research

    14. Published

      Comparative study of PCR methods to detect Pasteurella multocida

      Adhikary, S., Bisgaard, M., Foster, G., Kiessling, N., Fahlen, A. R., Olsen, John Elmerdahl & Christensen, Henrik, 2013, In: Berliner und Muenchener Tieraerztliche Wochenschrift. 126, 9/10, p. 415-422 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    15. Published

      Multistrain models predict sequential multidrug treatment strategies to result in less antimicrobial resistance than combination treatment

      Ahmad, A., Zachariasen, C., Christiansen, L. E., Græsbøll, K., Toft, N., Matthews, L., Olsen, John Elmerdahl & Nielsen, Søren Saxmose, 23 Jun 2016, In: B M C Microbiology. 16, 10 p., 118.

      Research output: Contribution to journal › Journal article › Research › peer-review

    16. Published

      Modeling the growth dynamics of multiple Escherichia coli strains in the pig intestine following intramuscular ampicillin treatment

      Ahmad, A., Zachariasen, C., Christiansen, L. E., Græsbøll, K., Toft, N., Matthews, L., Nielsen, Søren Saxmose & Olsen, John Elmerdahl, 6 Sep 2016, In: BMC Microbiology. 16, 1, 10 p., 205.

      Research output: Contribution to journal › Journal article › Research › peer-review

    17. Published

      Pharmacodynamic modelling of in vitro activity of tetracycline against a representative, naturally occurring population of porcine Escherichia coli

      Ahmad, A., Zachariasen, C., Christiansen, L. E., Græsbøll, K., Toft, N., Matthews, L., Damborg, Peter Panduro, Agersø, Y., Olsen, John Elmerdahl & Nielsen, Søren Saxmose, Nov 2015, In: Acta Veterinaria Scandinavica (Online). 57, 8 p., 79.

      Research output: Contribution to journal › Journal article › Research › peer-review

    18. Published

      High prevalence of mcr-1-encoded colistin resistance in commensal Escherichia coli from broiler chicken in Bangladesh

      Ahmed, S., Das, T., Islam, M. Z., Herrero-Fresno, A., Biswas, P. K. & Olsen, John Elmerdahl, 2020, In: Scientific Reports. 10, 13 p., 18637.

      Research output: Contribution to journal › Journal article › Research › peer-review

    19. Published

      The effect of colistin treatment on the selection of colistin-resistant Escherichia coli in weaner pigs

      Ahmed, S., Hansen, C., Dahlkilde, A. L., Herrero-Fresno, A., Pedersen, Ken Steen, Nielsen, Jens Peter & Olsen, John Elmerdahl, 2021, In: Antibiotics. 10, 4, 465.

      Research output: Contribution to journal › Journal article › Research › peer-review

    20. Published

      The genetic diversity of commensal Escherichia coli strains isolated from nonantimicrobial treated pigs varies according to age group

      Ahmed, S., Olsen, John Elmerdahl & Herrero-Fresno, A., 2017, In: PLoS ONE. 12, 5, 18 p., e0178623.

      Research output: Contribution to journal › Journal article › Research › peer-review

    21. Published

      Prevalence of genetic determinants and phenotypic resistance to ciprofloxacin in Campylobacter jejuni from lithuania

      Aksomaitiene, J., Ramonaite, S., Olsen, John Elmerdahl & Malakauskas, M., Feb 2018, In: Frontiers in Microbiology. 9, 2, 6 p., 203.

      Research output: Contribution to journal › Journal article › Research › peer-review

    22. Published

      Enhancing the Efficacy of Chloramphenicol Therapy for Escherichia coli by Targeting the Secondary Resistome

      Alobaidallah, M. S. A., García, V., Wellner, Sandra Marina, Thomsen, Line Elnif, Herrero-Fresno, A. & Olsen, John Elmerdahl, 2024, In: Antibiotics. 13, 1, 14 p., 73.

      Research output: Contribution to journal › Journal article › Research › peer-review

    23. Published

      Uncovering the Important Genetic Factors for Growth during Cefotaxime-Gentamicin Combination Treatment in blaCTX-M-1 Encoding Escherichia coli

      Alobaidallah, M. S. A., García, V., De Mets, R., Wellner, Sandra Marina, Thomsen, Line Elnif, Herrero-Fresno, A. & Olsen, John Elmerdahl, 2023, In: Antibiotics. 12, 6, 24 p., 993.

      Research output: Contribution to journal › Journal article › Research › peer-review

    24. Published

      Proteomes of Uropathogenic Escherichia coli Growing in Human Urine and in J82 Urinary Bladder Cells

      Andersen, S., Nawrocki, A., Johansen, A. E., Herrero-Fresno, A., Menéndez, V. G., Møller-Jensen, J. & Olsen, John Elmerdahl, 2022, In: Proteomes. 10, 2, 15.

      Research output: Contribution to journal › Journal article › Research › peer-review

    25. Published

      The impact of inactivation of the purine biosynthesis genes, purN and purT, on growth and virulence in uropathogenic E. coli

      Andersen-Civil, A. I. S., Ahmed, S., Guerra, Priscila Regina, Andersen, T. E., Hounmanou, Yaovi Mahuton Gildas, Olsen, John Elmerdahl & Herrero-Fresno, A., 2018, In: Molecular Biology Reports. 45, 6, p. 2707-2716 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    26. Published

      Prevalence and antimicrobial resistance of Salmonella serovars isolated from poultry in Ghana

      Andoh, L. A., Dalsgaard, Anders, Obiri-Danso, K., Newman, M. J., Barco, L. & Olsen, John Elmerdahl, Nov 2016, In: Epidemiology and Infection. 144, 15, p. 3288-3299 12 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    27. Published

      Prevalence and characterization of Salmonella among humans in Ghana

      Andoh, L. A., Ahmed, S., Olsen, John Elmerdahl, Obiri-Danso, K., Newman, M. J., Opintan, J. A., Barco, L. & Dalsgaard, Anders, 2017, In: Tropical Medicine and Health. 45, 11 p., 3.

      Research output: Contribution to journal › Journal article › Research › peer-review

    28. Published

      Further studies of the relationships among strains classified as taxon 15, taxon 18, taxon 20, (Pasteurella) granulomatis or the (Pasteurella) haemolytica-complex in ruminants using quantitative evaluation of phenotypic data

      Angen, Ø., Olsen, John Elmerdahl & Bisgaard, M., 1997, In: Zentralblatt für Bakteriologie. 286, p. 317-332 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    29. Published

      Relationships among strains classified with the ruminant Pasteurella haemolytica-complex using quantitative evaluation of phenotypic data

      Angen, Ø., Aalbæk, Bent, Falsen, E., Olsen, John Elmerdahl & Bisgaard, M., 1997, In: Zentralblatt für Bakteriologie. 285, p. 459-479 21 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    30. Published

      Genotypic relationships among strains classified under the (Pasteurella) haemolytica-complex as indicated by ribotyping and multilocus enzyme electrophoresis

      Angen, Ø., Caugant, D. A., Olsen, John Elmerdahl & Bisgaard, M., 1997, In: Zentralblatt für Bakteriologie. 286, p. 333-354 22 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    31. Published

      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.

      Angen, Ø., Mutters, R., Caugant, D. A., Olsen, John Elmerdahl & Bisgaard, M., 1999, In: International Journal of Systematic and Evolutionary Microbiology. 49, p. 67-86 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    32. Published

      Polyphasic characterization of organisms within the [Pasteurella] haemolytica complex

      Angen, Ø., Caugant, D. A., Olsen, John Elmerdahl & Bisgaard, M., 1996. 1 p.

      Research output: Contribution to conference › Paper › Research

    33. Published

      A Virus-like Particle-Based F4 Enterotoxigenic Escherichia coli Vaccine Is Inhibited by Maternally Derived Antibodies in Piglets but Generates Robust Responses in Sows

      Aves, Kara-Lee, Guerra, Priscila Regina, Fresno, A. H., Saraiva, M. M. S., Cox, E., Bækbo, P. J., Nielsen, Morten Agertoug, Sander, Adam F. & Olsen, John Elmerdahl, 2023, In: Pathogens. 12, 12, 19 p., 1388.

      Research output: Contribution to journal › Journal article › Research › peer-review

    34. Published

      GENOMIC CHARACTERIZATION OF MULTIDRUG-RESISTANT EXTENDED-SPECTRUM β-LACTAMASE-PRODUCING ESCHERICHIA COLI AND KLEBSIELLA PNEUMONIAE FROM CHIMPANZEES (PAN TROGLODYTES) FROM WILD AND SANCTUARY LOCATIONS IN UGANDA

      Bager, S. L., Kakaala, I., Kudirkiene, E., Byarugaba, D. K. & Olsen, John Elmerdahl, 2022, In: Journal of Wildlife Diseases. 58, 2, p. 269-278 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    35. Published

      Plasmid profiles and phage types of Salmonella typhimurium isolated from successive flocks of chickens on three parent stock farms

      Baggesen, D. L., Olsen, John Elmerdahl & Bisgaard, M., 1 Dec 1992, In: Avian Pathology. 21, 4, p. 569-579 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    36. Published

      Application of the Random Forest method to analyse epidemiological and phenotypic characteristics of Salmonella 4,[5],12:i:- and Salmonella Typhimurium strains

      Barco, L., Mancin, M., Ruffa, M., Saccardin, C., Minorello, C., Zavagnin, P., Lettini, A. A., Olsen, John Elmerdahl & Ricci, A., 2012, In: Zoonoses and Public Health. 59, 7, p. 505-512 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    37. Published

      Molecular characterization of Salmonella enterica serovar 4,[5],12:i:- DT193 ASSuT strains from two outbreaks in Italy

      Barco, L., Ramon, E., Cortini, E., Longo, A., Dalla Pozza, M. C., Lettini, A. A., Dionisi, A. M., Olsen, John Elmerdahl & Ricci, A., 2014, In: Foodborne pathogens and disease. 11, 2, p. 138-144 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    38. Published

      Salmonella source attribution based on microbial subtyping

      Barco, L., Barrucci, F., Olsen, John Elmerdahl & Ricci, A., 2013, In: International Journal of Food Microbiology. 163, 2-3, p. 193-203 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    39. Published

      Molecular characterization of "inconsistent" variants of Salmonella Typhimurium isolated in Italy

      Barco, L., Longo, A., Lettini, A. A., Cortini, E., Saccardin, C., Minorello, C., Olsen, John Elmerdahl & Ricci, A., 2014, In: Foodborne pathogens and disease. 11, 6, p. 497-499 3 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    40. Published

      Ascertaining the relationship between Salmonella Typhimurium and Salmonella 4,[5],12:i:- by MLVA and inferring the sources of human salmonellosis due to the two serovars in Italy

      Barco, L., Barrucci, F., Cortini, E., Ramon, E., Olsen, John Elmerdahl, Luzzi, I., Lettini, A. A. & Ricci, A., 27 Apr 2015, In: Frontiers in Microbiology. 6, 10 p., 301.

      Research output: Contribution to journal › Journal article › Research › peer-review

    41. Published

      Lesions and pathogens found in pigs that died during the nursery period in five Danish farms

      Barington, Kristiane, Eriksen, E. Ø., Kudirkiene, E., Pankoke, K., Hartmann, Katrine Top, Hansen, Mette Sif, Jensen, Henrik Elvang, Blirup-Plum, Sophie Amalie, Jørgensen, B. M., Nielsen, Jens Peter, Olsen, John Elmerdahl, Goecke, Nicole Bakkegård, Larsen, Lars & Pedersen, Ken Steen, 2023, In: Porcine Health Management. 9, 26.

      Research output: Contribution to journal › Journal article › Research › peer-review

    42. Published

      SKIN ULCERATIONS IN DANISH NURSERY PIGS

      Barington, Kristiane, Pankoke, K., Hartmann, Katrine Top, Hansen, Mette Sif, Jensen, Henrik Elvang, Blirup-Plum, Sophie Amalie, Jørgensen, B. M., Nielsen, Jens Peter, Eriksen, E. Ø., Kudirkiene, E., Olsen, John Elmerdahl & Pedersen, Ken Steen, 30 Aug 2023.

      Research output: Contribution to conference › Conference abstract for conference › Communication

    43. Published

      Genomic Features and Phylogenetic Analysis of Antimicrobial-Resistant Salmonella Mbandaka ST413 Strains

      Benevides, V. P., Saraiva, M. M. S., Nascimento, C. F., Delgado-Suárez, E. J., Oliveira, C. J. B., Silva, S. R., Miranda, V. F. O., Christensen, Henrik, Olsen, John Elmerdahl & Berchieri Junior, A., 2024, In: Microorganisms. 12, 2, 16 p., 312.

      Research output: Contribution to journal › Journal article › Research › peer-review

    44. Published

      Enteral but not parenteral antibiotics enhance gut function and prevent necrotizing enterocolitis in formula-fed newborn preterm pigs

      Birck, M. M., Nguyen, Duc Ninh, Cilieborg, Malene Skovsted, Bin Shamzir Kamal, S., Nielsen, Dennis Sandris, Damborg, Peter Panduro, Olsen, John Elmerdahl, Lauridsen, C., Sangild, Per Torp & Thymann, Thomas, 2016, In: American Journal of Physiology: Gastrointestinal and Liver Physiology. 310, 5, p. G323-G333 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    45. Published

      Taxonomic changes within Actinobacillus sensu stricto

      Bisgaard, M., Christensen, Henrik & Olsen, John Elmerdahl, 2002, Abstract. 18 ed. p. 29 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    46. Published

      Plasmid profiles of Salmonella enterica serovar berta isolated from broilers in Denmark

      Bisgaard, M. & Olsen, John Elmerdahl, Jul 1991, In: APMIS. 99, 7-12, p. 609-614 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    47. Published

      Gastro-intestinal lesions are not relatable to diarrhoea or specific pathogens in post-weaning diarrhoea (PWD) in pigs

      Blirup-Plum, Sophie Amalie, Jensen, Henrik Elvang, Nielsen, Søren Saxmose, Pankoke, K., Hansen, Mette Sif, Pedersen, Ken Steen, Eriksen, E. Ø., Nielsen, Jens Peter, Olsen, John Elmerdahl, Kudirkiene, E., Larsen, Lars, Goecke, Nicole Bakkegård & Barington, Kristiane, 2023, In: Acta Veterinaria Scandinavica. 65, p. 1-18 18 p., 30.

      Research output: Contribution to journal › Journal article › Research › peer-review

    48. Published

      Survival of Escherichia coli and Salmonella typhimurium in slurry applied to clay soil on a Danish swine farm

      Boes, J., Alban, L., Bagger, J., Møgelmose, V., Baggesen, D. L. & Olsen, John Elmerdahl, 2005, In: Preventive Veterinary Medicine. 69, 3-4, p. 213-228 16 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    49. Published

      Detection of gallibacterium (Pasteurella anatis, [Actinobacillus] salpingtidis and [P.] haemolytica-like organisms) in chickens by fluorescent 16S rRNA in situ hybridization

      Bojesen, Anders Miki, Christensen, Henrik, Bisgaard, M., Nielsen, O. L. & Olsen, John Elmerdahl, 2002, Abstract. 89 ed. p. 77 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    50. Published

      Detection of Gallibacterium spp. in Chickens by Fluorescent 16S rRNA In Situ Hybridization

      Bojesen, Anders Miki, Christensen, Henrik, Nielsen, O. L., Olsen, John Elmerdahl & Bisgaard, M., 2003, In: Journal of Clinical Microbiology. VOl 41, No. 11, 11, p. 5167-5172 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    51. Published

      Prevalence and clonal diversity of Actinobacillus salpingtidis/Pasteurella haemolytica-like bacteria in chickens from different production systems

      Bojesen, Anders Miki, Thorpdahl, M., Christensen, Henrik, Olsen, John Elmerdahl & Bisgaard, M., 2002. 1 p.

      Research output: Contribution to conference › Paper › Research

    52. Published

      Genetic Diversity of Gallibacterium anatis Isolates from Different Chicken Flocks

      Bojesen, Anders Miki, Thorpdahl, M., Christensen, Henrik & Olsen, John Elmerdahl, 2003, In: Journal of Clinical Microbiology. June, p. 2737-2740, 6, p. 2737-2740 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    53. Published

      Genomic diversity of Gallibacterium anatis in chicken flocks representing different production systems

      Bojesen, Anders Miki, Thorpdahl, M., Christensen, Henrik, Olsen, John Elmerdahl & Bisgaard, M., 2002, Abstract. 90 ed. p. 77 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    54. Published

      Detection of gallibacterium spp. in chickens by fluorescent 16s in situ hybridizatuib

      Bojesen, Anders Miki, Christensen, Henrik, Nielsen, O. L., Olsen, John Elmerdahl & Bisgaard, M., 2003. 1 p.

      Research output: Contribution to conference › Paper › Research

    55. Published

      Specific identification of Gallibacterium by a PCR using primers targeting the 16S rRNA and 23S rRNA genes

      Bojesen, Anders Miki, Vazquez, M. E., Robles, F., Gonzalez, C., Soriano, E., Olsen, John Elmerdahl & Christensen, Henrik, 2007, In: Veterinary Microbiology. 123, 1-3, p. 262-268 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    56. Published

      Whole Genome Sequencing (WGS) Analysis of Virulence and AMR Genes in Extended-Spectrum β-Lactamase (ESBL)-Producing Escherichia coli from Animal and Environmental Samples in Four Italian Swine Farms

      Bonvegna, M., Tomassone, L., Christensen, Henrik & Olsen, John Elmerdahl, 2022, In: Antibiotics. 11, 12, 1774.

      Research output: Contribution to journal › Journal article › Research › peer-review

    57. Published

      Persistence of vancomycin resistance in multiple clones of Enterococcus faecium isolated from Danish broilers 15 years after the ban of avoparcin

      Bortolaia, V., Mander, M., Jensen, L. B., Olsen, John Elmerdahl & Guardabassi, Luca, May 2015, In: Antimicrobial Agents and Chemotherapy. 59, 5, p. 2926-2929 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    58. Published

      Persistence of vancomycin-resistant Enterococcus faecium in Danish poultry 15 years after the ban of avoparcin

      Bortolaia, V., Mander, M., Jensen, L. B., Olsen, John Elmerdahl & Guardabassi, Luca, 2012, Book of abtracts: The 4th Central European Symposium on Antimicrobials and Antimicrobial Resistance, CESAR 2012: 23-26 September 2012 - Primošten, Croatia. p. 50 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research › peer-review

    59. Published

      Differences detected in the expression of Salmonella plasmid virulence (spv) genes in different serotypes of Salmonella enterica by the use of an spvB-cat fusion reporter gene

      Brown, D. J., Chadfield, M. S. & Olsen, John Elmerdahl, 1997. 1 p.

      Research output: Contribution to conference › Paper › Research

    60. Published

      Phage type conversion in Salmonella enterica serotype enteritidis caused by the introduction of a resistance plasmid of incompatibility group X (IncX)

      Brown, D. J., Lau Baggesen, D., Platt, D. J. & Olsen, John Elmerdahl, 1999, In: Epidemiology and Infection. 122, p. 19-22 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    61. Published

      Salmonella plasmid virulence (spv) gene expression in different serotypes of Salmonella enterica measured by the use of spvB fusion reporter genes

      Brown, D. J., Chadfield, M. S. & Olsen, John Elmerdahl, 1997. 3 p.

      Research output: Contribution to conference › Paper › Research

    62. Published

      Salmonella enterica: Infection, Cross Infection and Persistence within the Environment of a Broiler Parent Stock Unit in Denmark

      Brown, D. J., Olsen, John Elmerdahl & Bisgaard, M., 1992, In: Zentralblatt fur Bakteriologie. 277, 1, p. 129-138 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    63. Published

      Occurence, isolation and characterization of Avibacterium paragallinarum from poultry in Uganda

      Byarugaba, D. K., Minga, U. M., Gwakisa, P. S., Katunguka, E. R., Bisgaard, M. & Olsen, John Elmerdahl, 2006, Ikke angivet. The International Society for Veterinary Epidemiology and Economics, p. 381-384 4 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    64. Published

      Investigations of the occurrence of Avibacterium paragallinarum infections in Uganda

      Byarugaba, D. K., Minga, U. M., Gwakisa, P. S., Katunguka-Rwakishaya, E., Bisgaard, M. & Olsen, John Elmerdahl, 2007, In: Avian Diseases. 51, 2, p. 534-539 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    65. Published

      Demonstration of antibiotic resistance genes strA, blaTEM, tetA, tetC and sul2 in Avibacterium paragallinarum

      Byarugaba, D. K., Minga, U. M., Gwakisa, P. S., Katunguka-Rwakishaya, E., Bisgaard, M., Christensen, Henrik & Olsen, John Elmerdahl, 2011, In: African Journal of Microbiology Research. 5, 22, p. 3624-3627 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    66. Published

      Virulence characterization of Avibacterium paragallinarum isolates from Uganda

      Byarugaba, D., Minga, U. M., Gwakisa, P. S., Katunguka-Rwakishaya, E., Bisgaard, M. & Olsen, John Elmerdahl, 2007, In: Avian Pathology. 36, 1, p. 35-42 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    67. Published

      Characterisation of attenuated crp mutants of Salmonella enterica biotype gallinarum

      Chadfield, M. S., Rosu, V., Santona, A., Rubino, S. & Olsen, John Elmerdahl, 2002. 2 p.

      Research output: Contribution to conference › Paper › Research

    68. Published

      Determination of the oxidative burst chemiluminescent response of avian and murine primary macrophages versus corresponding cell lines in relation to stimulation with Salmonella serotypes

      Chadfield, M. S. & Olsen, John Elmerdahl, 2001, In: Veterinary Immunology and Immunopathology. 80, p. 289-308 20 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    69. Published

      Comparison of intestinal invasion and macrophage response of Salmonella Gallinarum and other host adapted Salmonella enterica serovars in the avian host

      Chadfield, M. S., Brown, D. J., Aabo, S., Christensen, Jens Peter & Olsen, John Elmerdahl, 2003, In: Veterinary Microbiology. 92, 2003, p. 49-64 15 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    70. Published

      The role of flagella and shemotaxis on virulence of salmonella enterica serotypes typhimurium and Dublin

      Chadfield, M. S., Høegh-Andersen, K. H., Aabo, S., Christensen, Jens Peter & Olsen, John Elmerdahl, 2003. 1 p.

      Research output: Contribution to conference › Paper › Research

    71. Published

      Påvisning af salmonella populationer udfra ribosomale DNA sekvenser

      Christensen, Henrik & Olsen, John Elmerdahl, 1996. 1 p.

      Research output: Contribution to conference › Poster › Research

    72. Published

      Taxonomy of taxon 9 of Bisgaard isolated from diseased horses and proposal of Actinobacillus hippikon sp. nov.

      Christensen, Henrik, Bisgaard, M. & Olsen, John Elmerdahl, 2001. 1 p.

      Research output: Contribution to conference › Paper › Research

    73. Published

      Phylogenetic relationships of Salmonella based on DNA sequence comparison of atpD encoding the beta subunit of ATP synthase

      Christensen, Henrik & Olsen, John Elmerdahl, 1998, In: FEMS Microbiology Letters. 161, p. 89-96 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    74. Published

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

      Christensen, Henrik, Kuhnert, P., Olsen, John Elmerdahl & Bisgaard, M., 2004, In: International Journal of Systematic and Evolutionary Microbiology. 54, p. 1601-1609 9 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    75. Published

      Revised description and classification of atypical isolates of Pasteurella multocida from bovine lungs based on genotypic characterization to include variants previously classified as biovar 2 of Pasteurella canis and Pasteurella avium

      Christensen, Henrik, Angen, Ø., Olsen, John Elmerdahl & Bisgaard, M., 2004, In: Microbiology. 150, p. 1757-1767 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    76. Published

      Differentiation of Campylobacter coli and C. jejuni by length and DNA sequence of the 16S-23S rRNA internal spacer region

      Christensen, Henrik, Jørgensen, K. & Olsen, John Elmerdahl, 1999, In: Microbiology. 145, p. 99-105 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    77. Published

      Reclassification of Bisgaard taxon 33, with proposal of Volucribacter psittacicida gen.nov., sp. nov. and Volucribacter amazonae sp. nov. as new members of the Pasteurellaceae

      Christensen, Henrik, Bisgaard, M., Aalbæk, Bent & Olsen, John Elmerdahl, 2004, In: International Journal of Systematic and Evolutionary Microbiology. 54, p. 813-818 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    78. Published

      Final classification of Bisgaard taxon 9 as Actinobacillus arthritidis sp. nov. and recognition of a novel genomospecies for equine strains of Actinobacillus lignieresii

      Christensen, Henrik, Bisgaard, M., Angen, Ø. & Olsen, John Elmerdahl, 2002, In: International Journal of Systematic and Evolutionary Microbiology. 52, p. 1239-1246 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    79. Published

      Reclassification of equine isolates previously reported as Actinobacillus equuli, variants of A. equuli, Actinobacillus suis or Bisgaard taxon 11 and proposal of A. equuli subsp. equuli subsp. nov. and A. equuli subsp. haemolyticus subsp. nov.

      Christensen, Henrik, Bisgaard, M. & Olsen, John Elmerdahl, 2002, In: International Journal of Systematic and Evolutionary Microbiology. 52, p. 1569-1576 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    80. Published

      Relation between subspecies of Salmonella enterica by 23S rDNA sequence comparison

      Christensen, Henrik & Olsen, John Elmerdahl, 1996. 1 p.

      Research output: Contribution to conference › Poster › Research

    81. Published

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

      Christensen, Henrik, Bisgaard, M., Bojesen, Anders Miki, Mutters, R. ;. & Olsen, John Elmerdahl, 2003, In: Int. Journal of Systemtic and Evolutionary Microbiology. (2003) 53, p. 275-287 13 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    82. Published

      Genotypic heterogeneity of Pasteurella gallinarum as shown by ribotyping and 16S rRNA sequencing

      Christensen, Henrik, Dziva, F., Olsen, John Elmerdahl & Bisgaard, M., 2002, In: Avian Pathology. 31, p. 603-610 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    83. Published

      A manual of basic tools in bioinformatics

      Christensen, Henrik & Olsen, John Elmerdahl, 2003, 35 p.

      Research output: Book/Report › Compendium/lecture notes › Education

    84. Published

      Anvendelse af ITS (internal transcribed spacer) fragmentlængde polymorfi til typning indenfor Salmonella og Campylobacter

      Christensen, Henrik, Jørgensen, K., Lange Møller, P. & Olsen, John Elmerdahl, 1997, Ikke angivet. Levnedsmiddelcentret, p. 187 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    85. Published

      Revised phylogeny of pasteurellaceae by 16S rRNA and house-keeping gene sequence comparisons

      Christensen, Henrik, Bisgaard, M. & Olsen, John Elmerdahl, 2002.

      Research output: Contribution to conference › Paper › Research

    86. Published

      Genotypical homogeneity among phenotypic variants of Pasteurella multocida, biovars 2 or P. canis and P. avium and isolates misclassified as P. anatis

      Christensen, Henrik, Olsen, John Elmerdahl & Bisgaard, M., 2002, Abstract. 19 ed. p. 29 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    87. Published

      16S to 23S rRNA spacer fragment length polymorphism of Salmonella enterica at subspecies and serotype levels

      Christensen, Henrik, Lange Møller, P., Vogensen, Finn Kvist & Olsen, John Elmerdahl, 2000, In: Journal of Applied Microbiology. 89, p. 130-136 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    88. Published

      Phylogenetic relationships of Salmonella based on rRNA sequences

      Christensen, Henrik, Nordentoft, S. & Olsen, John Elmerdahl, 1998, In: International Journal of Systematic and Evolutionary Microbiology. 48, p. 605-610 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    89. Published

      Nye principper for navngivning af bakterier

      Christensen, Henrik, Olsen, John Elmerdahl & Bisgaard, M., 1999, In: Dansk Veterinærtidsskrift. 82, 4, p. 102-107 6 p.

      Research output: Contribution to journal › Journal article › Research

    90. Published

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

      Christensen, Henrik, Angen, Ø., Mutters, R., Olsen, John Elmerdahl & Bisgaard, M., 2000, In: International Journal of Systematic and Evolutionary Microbiology. 50, p. 1095-1102 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    91. Published

      Phylogenetic analysis by 16S rDNA gene sequence comparison of avian taxa of Bisgaard and characterization and description of two new taxa of Pasteurellaceae

      Christensen, Henrik, Foster, G., Christensen, Jens Peter, Pennycott, T., Olsen, John Elmerdahl & Bisgaard, M., 2003, In: Journal of Applied Microbiology. 95, 2, p. 354-363 9 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    92. Published

      PCR detection of [haemophilus] paragallinarum, [H] somnus, Mannheimia (Pasteurella) haemolytica, Mannheimia spp., [P.] trehalosi, and Pasteurella multocida

      Christensen, Henrik, Bisgaard, M., Larsen, J. & Olsen, John Elmerdahl, 2002, PCR detection of microbial pathogens : methods and protocols. Sachse, K. & Frey, J. (eds.). Humana Press, p. 257-274 18 p.

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

    93. Published

      Navneændringer og nye bakteriearter af veterinær betydning

      Christensen, Henrik, Aabo, S., Aalbæk, Bent, Bisgaard, M. & Olsen, John Elmerdahl, 1999, In: Dansk Veterinærtidsskrift. 82, 4, p. 108-112 5 p.

      Research output: Contribution to journal › Journal article › Research

    94. Published

      Reclassification of Bisgaard taxon 33 with proposal of Avibacterium amazonae gen. nov., sp. nov. as a new member of pasteurellaceae

      Christensen, Henrik, Aalbæk, Bent, Bisgaard, M. & Olsen, John Elmerdahl, 2002, Abstract. 16 ed. p. 29 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    95. Published

      A manual of basic tools in bioinformatics

      Christensen, Henrik & Olsen, John Elmerdahl, 2003. 34 p.

      Research output: Contribution to conference › Paper › Research

    96. Published

      Sequence variation of the 16S to 23S rRNA spacer region in Salmonella enterica

      Christensen, Henrik, Lange Møller, P., Vogensen, Finn Kvist & Olsen, John Elmerdahl, 2000, In: Research in Microbiology. 151, p. 37-42 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    97. Published

      Phylogenetic relations of Salmonella established by 23S rRNA gene sequence comparison

      Christensen, Henrik, Nordentoft, S. & Olsen, John Elmerdahl, 1997. 6 p.

      Research output: Contribution to conference › Paper › Research

    98. Published

      Population genetics of Salmonella

      Christensen, Henrik & Olsen, John Elmerdahl, 1999. 1 p.

      Research output: Contribution to conference › Paper › Research

    99. Published

      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)

      Christensen, Henrik, Bisgaard, M., Frederiksen, W., Mutters, R., Kuhnert, P. & Olsen, John Elmerdahl, 2001, In: International Journal of Systematic and Evolutionary Microbiology. 51, p. 2221-2225 5 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    100. Published

      Abstract i forbindelse med præsentation af poster til: Avancerede målesystemer og databehandling til proces- og produktudvikling, 1995, KVL

      Christensen, Henrik & Olsen, John Elmerdahl, 1995

      Research output: Other contribution › Communication

    Previous 1 2 3 4 5 Next

    ID: 4236663