John Elmerdahl Olsen

John Elmerdahl Olsen

Professor

Member of:

    ORCID: 0000-0001-6225-6587

    Publication year:
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    1 - 50 out of 488Page size: 50
    1. 2024
    2. Published

      Salmonella Gallinarum mgtC mutant shows a delayed fowl typhoid progression in chicken

      Rodrigues Alves, L. B., Freitas Neto, O. C. D., Saraiva, M. D. M. S., do Monte, D. F. M., de Lima, B. N., Cabrera, J. M., Barbosa, F. D. O., Benevides, V. P., de Lima, T. S., Campos, I. C., Rubio, M. D. S., Nascimento, C. D. F., Arantes, L. C. R. V., Alves, V. V., de Almeida, A. M., Olsen, John Elmerdahl & Berchieri Junior, A., 20 Jan 2024, In: Gene. 892, 147827.

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

    3. Published

      Diet composition drives tissue-specific intensity of murine enteric infections

      Israelson, H., Vedsted-Jakobsen, Amalie, Zhu, L., Gagnaire, A., von Münchow, Alexandra, Polakovicova, N., Valente, Angela Hørdum, Raza, Ali, Andersen-Civil, A. I. S., Olsen, John Elmerdahl, Myhill, Laura Jessica, Geldhof, P. & Williams, Andrew Richard, 2024, In: mBio. 15, 2, 22 p., e0260323.

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

    4. Published

      Genome-wide identification of fitness-genes in aminoglycoside-resistant Escherichia coli during antibiotic stress

      Wellner, Sandra Marina, Alobaidallah, M. S. A., Fei, Xiao, Herrero-Fresno, A. & Olsen, John Elmerdahl, 2024, In: Scientific Reports. 14, 16 p., 4163.

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

    5. 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

    6. Published

      Lack of correlation between growth, stress, and virulence phenotypes in strains of Salmonella enterica serovar Enteritidis, S. Typhimurium DT104, S. 4,12, b:- and S. Liverpool

      Olsen, John Elmerdahl, Frees, Dorte, Kyvsgaard, N. C. & Barco, L., 2024, In: Letters in Applied Microbiology. 77, 2, 9 p., ovae015.

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

    7. 2023
    8. 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

    9. 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

    10. Published

      An observational field study of porcine post-weaning diarrhea: clinical and microbiological findings, and fecal pH-measurements as a potential diagnostic tool

      Eriksen, E. Ø., Kudirkiene, E., Barington, Kristiane, Goecke, Nicole Bakkegård, Blirup-Plum, Sophie Amalie, Nielsen, Jens Peter, Olsen, John Elmerdahl, Jensen, Henrik Elvang, Pankoke, K., Larsen, Lars, Liu, G. & Pedersen, Ken Steen, 2023, In: Porcine Health Management. 9, 33.

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

    11. Published

      Assessing phenotypic virulence of Salmonella enterica across serovars and sources

      Petrin, S., Wijnands, L., Benincà, E., Mughini-Gras, L., Delfgou-van Asch, E. H. M., Villa, L., Orsini, M., Losasso, C., Olsen, John Elmerdahl & Barco, L., 2023, In: Frontiers in Microbiology. 14, 1184387.

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

    12. Published

      Bacteriostatic and Haemolytic Activities of Extracts and Compounds of Commiphora swynnertonii

      Msengwa, Z., Credo, D., Mafuru, M., Mwesongo, J., Mabiki, F. P., Mwang’onde, B. J., Mtambo, M. M., Kusiluka, L. J., Mdegela, R. H. & Olsen, John Elmerdahl, 2023, In: Research Journal of Pharmacognosy. 10, 2, p. 47-56 10 p.

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

    13. Published

      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

      Fresno, A. H., Farias Alencar, Anna Luiza, Liu, G., Wridt, M. W., Andersen, F. B., Pedersen, H. S., Martin, H. L., Nielsen, Søren Saxmose, Aabo, S., Olsen, John Elmerdahl & Jensen, A. N., 2023, In: Veterinary Microbiology. 286, 109885.

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

    14. Published

      Epifriedelanol is the key compound to antibacterial effects of extracts of Synadenium glaucescens (Pax) against medically important bacteria

      Msengwa, S. Z., Rwegoshora, F., David, C., Mwesongo, J., Mafuru, M., Mabiki, F. P., Mwang’onde, B. J., Mtambo, M. M., Kusiluka, L. J. M., Mdegela, R. H. & Olsen, John Elmerdahl, 2023, In: Frontiers in Tropical Diseases. 3, 1104543.

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

    15. Published

      Estimating potential farm economic benefits of advanced microbiological diagnostics in veterinary medicine

      Jensen, Jørgen Dejgård, Christensen, Tove, Pansri, P. & Olsen, John Elmerdahl, 2023, In: Animal Production Science. 63, 15, p. 1545-1558

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

    16. 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

    17. Published

      Genomics, biofilm formation and infection of bladder epithelial cells in potentially uropathogenic Escherichia coli (UPEC) from animal sources and human urinary tract infections (UTIs) further support food-borne transmission

      García, V., Lestón, L., Parga, A., García-Meniño, I., Fernández, J., Otero, A., Olsen, John Elmerdahl, Herrero-Fresno, A. & Mora, A., 2023, In: One Health. 16, 100558.

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

    18. Published

      Identification of Salmonella Pullorum Factors Affecting Immune Reaction in Macrophages from the Avian Host

      Fei, Xiao, Li, Q., Jiao, X. & Olsen, John Elmerdahl, 2023, In: Microbiology Spectrum. 11, 3, e00786-23.

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

    19. Published

      Incidence and Genomic Background of Antibiotic Resistance in Food-Borne and Clinical Isolates of Salmonella enterica Serovar Derby from Spain

      Vázquez, X., García-Fierro, R., Fernández, J., Bances, M., Herrero-Fresno, A., Olsen, John Elmerdahl, Rodicio, R., Ladero, V., García, V. & Rodicio, M. R., 2023, In: Antibiotics. 12, 7, 1204.

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

    20. 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

    21. Published

      Phenotypic and genotypic antimicrobial resistance correlation and plasmid characterization in Salmonella spp. isolates from Italy reveal high heterogeneity among serovars

      Petrin, S., Orsini, M., Massaro, A., Olsen, John Elmerdahl, Barco, L. & Losasso, C., 2023, In: Frontiers in Public Health. 11, 13 p., 1221351.

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

    22. Published

      Prevalence and whole genome phylogenetic analysis reveal genetic relatedness between antibiotic resistance Salmonella in hatchlings and older chickens from farms in Nigeria

      Jibril, A. H., Okeke, I. N., Dalsgaard, Anders & Olsen, John Elmerdahl, 2023, In: Poultry Science. 102, 3, 102427.

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

    23. Published

      The global transcriptomes of Salmonella enterica serovars Gallinarum, Dublin and Enteritidis in the avian host

      Fei, Xiao, Schroll, C., Huang, K., Christensen, Jens Peter, Christensen, Henrik, Lemire, S., Kilstrup, M., Thomsen, Line Elnif, Jelsbak, L. & Olsen, John Elmerdahl, 2023, In: Microbial Pathogenesis. 182, 106236.

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

    24. 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

    25. Published

      Whole strains vs MGEs in short and longterm transmission of ESBL genes between healthcare and community settings in Uganda

      Hounmanou, Yaovi Mahuton Gildas, Wanyana, A., Alafi, S., Wabwire-mangen, F., Christensen, Henrik, Olsen, John Elmerdahl & Byarugaba, D. K., 2023, In: Scientific Reports. 13, 10229.

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

    26. 2022
    27. Published

      ANTIBACTERIAL EFFECTS OF SINGLE AND COMBINED CRUDE EXTRACTS OF SYNADENIUM GLAUCESCENS AND COMMIPHORA SWYNNERTONII

      Ochollah, G. M., Msengwa, S. Z., Mabiki, P. F., Kusiluka, J. M. L., Mdegela, H. R. & Olsen, John Elmerdahl, 2022, In: African Journal of Infectious Diseases. 16, 2, p. 9-16 8 p.

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

    28. Published

      Antimicrobial-induced horizontal transfer of antimicrobial resistance genes in bacteria: a mini-review

      Liu, G., Thomsen, Line Elnif & Olsen, John Elmerdahl, 2022, In: The Journal of antimicrobial chemotherapy. 77, 3, p. 556-567 12 p.

      Research output: Contribution to journal › Review › Research › peer-review

    29. Published

      Effect of pH and Salinity on the Ability of Salmonella Serotypes to Form Biofilm

      Petrin, S., Mancin, M., Losasso, C., Deotto, S., Olsen, John Elmerdahl & Barco, L., 2022, In: Frontiers in Microbiology. 13, 821679.

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

    30. Published

      Evaluation of a novel multiplex qPCR method for rapid detection and quantification of pathogens associated with calf diarrhoea

      Pansri, P., Svensmark, B., Liu, G., Thamsborg, Stig Milan, Kudirkiene, E., Nielsen, H. V., Goecke, Nicole Bakkegård & Olsen, John Elmerdahl, 2022, In: Journal of Applied Microbiology. 133, 4, p. 2516-2527

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

    31. 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

    32. Published

      Garlic-Derived Metabolites Exert Antioxidant Activity, Modulate Gut Microbiota Composition and Limit Citrobacter rodentium Infection in Mice

      Zhu, L., Andersen-Civil, A. I. S., Castro-Meija, J. L., Nielsen, Dennis Sandris, Blanchard, A., Olsen, John Elmerdahl, Thamsborg, Stig Milan & Williams, Andrew Richard, 2022, In: Antioxidants. 11, 10, 14 p., 2033.

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

    33. Published

      Genome-wide analysis of fitness factors in uropathogenic Escherichia coli in a pig urinary tract infection model

      García, V., Stærk, K., Alobaidallah, M. S. A., Grønnemose, R. B., Guerra, Priscila Regina, Andersen, T. E., Olsen, John Elmerdahl & Herrero-Fresno, A., 2022, In: Microbiological Research. 265, p. 127202 1 p.

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

    34. Published

      Inhibition of Virulence Gene Expression in Salmonella Dublin, Escherichia coli F5 and Clostridium perfringens Associated With Neonatal Calf Diarrhea by Factors Produced by Lactic Acid Bacteria During Fermentation of Cow Milk

      Liu, G., Kragh, M. L., Aabo, S., Jensen, A. N. & Olsen, John Elmerdahl, 2022, In: Frontiers in Microbiology. 13, 828013.

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

    35. Published

      Prediction of Pasteurella multocida serotypes based on whole genomic sequences

      Christensen, Henrik, Sajid, S. M., Bisgaard, M., Magistrali, C. F., Massacci, F. R., Liman, M., Menke, T., Bischoff, H. & Olsen, John Elmerdahl, 2022, In: Veterinary Microbiology. 271, 109492.

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

    36. 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

    37. Published

      Recommendations on diagnostic investigations of post-weaning diarrhea outbreaks: assessing the prevalence of diarrhea and determining microbiological etiologies

      Eriksen, E. Ø., Nielsen, Jens Peter, Kudirkiene, E., Olsen, John Elmerdahl, Goecke, Nicole Bakkegård, Larsen, Lars, Liu, G., Schmidt, Marianne Viuf Agerlin, Christensen, A. E. & Pedersen, Ken Steen, 2022.

      Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

    38. 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

    39. Published

      “Omics” Technologies - What Have They Told Us About Uropathogenic Escherichia coli Fitness and Virulence During Urinary Tract Infection?

      Torres-Puig, S., García, V., Stærk, K., Andersen, T. E., Møller-Jensen, J., Olsen, John Elmerdahl & Herrero-Fresno, A., 2022, In: Frontiers in Cellular and Infection Microbiology. 12, 824039.

      Research output: Contribution to journal › Review › Research › peer-review

    40. 2021
    41. Published

      Association between antimicrobial usage and resistance in Salmonella from poultry farms in Nigeria

      Jibril, A. H., Okeke, I. N., Dalsgaard, Anders & Olsen, John Elmerdahl, 2021, In: BMC Veterinary Research. 17, 234.

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

    42. Published

      Co-occurrence of antimicrobial and metal resistance genes in pig feces and agricultural fields fertilized with slurry

      Peng, S., Zheng, H., Herrero-Fresno, A., Olsen, John Elmerdahl, Dalsgaard, Anders & Ding, Z., 2021, In: Science of the Total Environment. 792, 148259.

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

    43. Published

      Duo: A Signature Based Method to Batch-Analyze Functional Similarities of Proteins

      Fei, Xiao, Li, Q., Olsen, John Elmerdahl & Jiao, X., 2021, In: Frontiers in Microbiology. 12, 698322.

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

    44. Published

      ESBL and AmpC β-Lactamase Encoding Genes in E. coli From Pig and Pig Farm Workers in Vietnam and Their Association With Mobile Genetic Elements

      Hounmanou, Yaovi Mahuton Gildas, Bortolaia, V., Dang, S. T. T., Truong, D., Olsen, John Elmerdahl & Dalsgaard, Anders, 2021, In: Frontiers in Microbiology. 12, 14 p., 629139.

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

    45. Published

      Genetic Comparison of ESBL-Producing Escherichia coli from Workers and Pigs at Vietnamese Pig Farms

      Truong, D. T. Q., Hounmanou, Yaovi Mahuton Gildas, Dang, S. T. T., Olsen, John Elmerdahl, Truong, G. T. H., Tran, N. T., Scheutz, F. & Dalsgaard, Anders, 2021, In: Antibiotics. 10, 10, 1165.

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

    46. Published

      Genome-wide analysis of fitness-factors in uropathogenic Escherichia coli during growth in laboratory media and during urinary tract infections

      García, V., Grønnemose, R. B., Torres-Puig, S., Kudirkiene, E., Piantelli, M., Ahmed, S., Andersen, T. E., Møller-Jensen, J., Olsen, John Elmerdahl & Herrero-Fresno, A., 2021, In: Microbial Genomics. 7, 12, 22 p., :000719.

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

    47. Published

      Genomic analysis of antimicrobial resistance and resistance plasmids in salmonella serovars from poultry in Nigeria

      Jibril, A. H., Okeke, I. N., Dalsgaard, Anders, Menéndez, V. G. & Olsen, John Elmerdahl, 2021, In: Antibiotics. 10, 2, p. 1-22 22 p., 99.

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

    48. Published

      Identification and characterization of a spreadable IncI1 plasmid harbouring a blaCTX-M-15 gene in an Italian human isolate of Salmonella serovar Napoli

      Petrin, S., Orsini, M., Mastrorilli, E., Longo, A., Cozza, D., Olsen, John Elmerdahl, Ricci, A., Losasso, C. & Barco, L., 2021, In: Plasmid. 114, 102566.

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

    49. Published

      Immunological and bacteriological shifts associated with a flagellin-hyperproducing Salmonella Enteritidis mutant in chickens

      de Oliveira Barbosa, F., de Freitas Neto, O. C., Rodrigues Alves, L. B., Benevides, V. P., de Souza, A. I. S., da Silva Rubio, M., de Almeida, A. M., Saraiva, M. M., de Oliveira, C. J. B., Olsen, John Elmerdahl & Junior, A. B., 2021, In: Brazilian Journal of Microbiology. 52, p. 419–429

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

    50. Published

      Occurrence of major and minor pathogens in calves diagnosed with bovine respiratory disease

      Kudirkiene, E., Aagaard, A. K., Schmidt, L. M. B., Pansri, P., Krogh, K. M. & Olsen, John Elmerdahl, 2021, In: Veterinary Microbiology. 259, 109135.

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

    51. Published

      Post-weaning diarrhea in pigs weaned without medicinal zinc: risk factors, pathogen dynamics, and association to growth rate

      Eriksen, E. Ø., Kudirkiene, E., Christensen, A. E., Schmidt, Marianne Viuf Agerlin, Weber, N. R., Nødtvedt, A., Nielsen, Jens Peter, Hartmann, Katrine Top, Skade, L., Larsen, Lars, Pankoke, K., Olsen, John Elmerdahl, Jensen, Henrik Elvang & Pedersen, Ken Steen, 2021, In: Porcine Health Management. 7, 54.

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

    52. Published

      Post-weaning diarrhea outbreaks in Danish herds not using medicinal zinc oxide

      Eriksen, E. Ø., Kudirkiene, E., Nielsen, Jens Peter, Olsen, John Elmerdahl & Pedersen, Ken Steen, 2021.

      Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

    53. Published

      Prediction of Mannheimia haemolytica serotypes based on whole genomic sequences

      Christensen, Henrik, Bisgaard, M., Menke, T., Liman, M., Timsit, E., Foster, G. & Olsen, John Elmerdahl, 2021, In: Veterinary Microbiology. 262, 109232.

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

    54. 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

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    ID: 4236663