John Elmerdahl Olsen

John Elmerdahl Olsen

Professor

Member of:

    ORCID: 0000-0001-6225-6587

    Publication year:
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    1 - 100 out of 488Page size: 100
    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

    55. 2020
    56. Published

      A bioinformatic approach to identify core genome difference between Salmonella Pullorum and Salmonella Enteritidis

      Fei, Xiao, Li, Q., Olsen, John Elmerdahl & Jiao, X., 2020, In: Infection, Genetics and Evolution. 85, 104446.

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

    57. Published

      A plasmid-encoded fetmp-fls iron uptake system confers selective advantages to salmonella enterica serovar typhimurium in growth under iron-restricted conditions and for infection of mammalian host cells

      García, V., Herrero-Fresno, A., Rodicio, R., Felipe-López, A., Montero, I., Olsen, John Elmerdahl, Hensel, M. & Rodicio, M. R., 2020, In: Microorganisms. 8, 5, 15 p., 630.

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

    58. Published

      Association of the prophage BTP1 and the prophage-encoded gene, bstA, with antivirulence of Salmonella Typhimurium ST313

      Spiegelhauer, M. R., García, V., Guerra, Priscila Regina, Olsen, John Elmerdahl & Herrero-Fresno, A., 2020, In: Pathogens and Disease. 78, 3, ftaa019.

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

    59. Published

      Combining Salmonella Dublin genome information and contact-tracing to substantiate a new approach for improved detection of infectious transmission routes in cattle populations

      de Knegt, Leonardo Victor, Kudirkiene, E., Rattenborg, E., Sørensen, G., Denwood, Matt, Olsen, John Elmerdahl & Nielsen, Liza Rosenbaum, 2020, In: Preventive Veterinary Medicine. 181, 104531 p.

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

    60. Published

      Dynamics and Outcome of Macrophage Interaction Between Salmonella Gallinarum, Salmonella Typhimurium, and Salmonella Dublin and Macrophages From Chicken and Cattle

      Huang, K., Fresno, A. H., Skov, Søren & Olsen, John Elmerdahl, 2020, In: Frontiers in Cellular and Infection Microbiology. 9, 12 p., 420.

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

    61. Published

      Effect of ampicillin, cephalexin, ceftiofur and tetracycline treatment on selection of resistant coliforms in a swine faecal microcosmos

      Herrero-Fresno, A. & Olsen, John Elmerdahl, 2020, In: Journal of Applied Microbiology. 129, 5, p. 1238-1247

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

    62. Published

      Epidemiology of Salmonella enterica Serovar Dublin in Cattleand Humans in Denmark, 1996 to 2016: a Retrospective Whole-Genome-Based Study

      Kudirkiene, E., Sørensen, G., Torpdahl, M., de Knegt, Leonardo Victor, Nielsen, Liza Rosenbaum, Rattenborg, E., Ahmed, S. & Olsen, John Elmerdahl, 2020, In: Applied and Environmental Microbiology. 86, 3, 12 p., e01894-19.

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

    63. Published

      Evaluation of novel multiplex qPCR assays for diagnosis of pathogens associated with the bovine respiratory disease complex

      Pansri, P., Katholm, J., Krogh, K. M., Aagaard, A. K., Schmidt, L. M. B., Kudirkiene, E., Larsen, Lars & Olsen, John Elmerdahl, 2020, In: Veterinary Journal. 256, 105425.

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

    64. Published

      F4- and F18-Positive Enterotoxigenic Escherichia coli Isolates from Diarrhea of Postweaning Pigs: Genomic Characterization

      García, V., Gambino, Michela, Pedersen, K., Haugegaard, S., Olsen, John Elmerdahl & Herrero-Fresno, A., 2020, In: Applied and Environmental Microbiology. 86, 23

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

    65. Published

      Global responses to oxytetracycline treatment in tetracycline-resistant Escherichia coli

      Møller, T. S. B., Liu, G., Hartman, H. B., Rau, M. H., Mortensen, S., Thamsborg, K., Johansen, A. E., Sommer, M. O. A., Guardabassi, Luca, Poolman, M. G. & Olsen, John Elmerdahl, 2020, In: Scientific Reports. 10, 1, 13 p., 8438.

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

    66. 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

    67. Published

      Indications for the use of highest priority critically important antimicrobials in the veterinary sector

      Lhermie, G., La Ragione, R. M., Weese, J. S., Olsen, John Elmerdahl, Christensen, Jens Peter & Guardabassi, Luca, 2020, In: The Journal of antimicrobial chemotherapy. 75, 7, p. 1671-1680 10 p.

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

    68. Published

      Influence of zinc on CTX-M-1 β-lactamase expression in Escherichia coli

      Peng, S., Herrero-Fresno, A., Olsen, John Elmerdahl & Dalsgaard, Anders, 2020, In: Journal of Global Antimicrobial Resistance. 22, p. 613-619 7 p.

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

    69. Published

      Molecular Characteristics and Zoonotic Potential of Salmonella Weltevreden From Cultured Shrimp and Tilapia in Vietnam and China

      Hounmanou, Yaovi Mahuton Gildas, Dalsgaard, Anders, Sopacua, T. F., Uddin, G. M. N., Leekitcharoenphon, P., Hendriksen, R. S., Olsen, John Elmerdahl & Larsen, M. H., 2020, In: Frontiers in Microbiology. 11, 1985.

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

    70. Published

      Polyamine depletion has global effects on stress and virulence gene expression and affects HilA translation in Salmonella enterica serovar typhimurium

      Guerra, Priscila Regina, Liu, G., Lemire, S., Nawrocki, A., Kudirkiene, E., Møller-Jensen, J., Olsen, John Elmerdahl & Jelsbak, L., 2020, In: Research in Microbiology. 17, 3-4, p. 143-152

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

    71. Published

      Prevalence and genomic characterization of Salmonella Weltevreden in commercial pig feed

      Minh, D. K., Hounmanou, Yaovi Mahuton Gildas, Mai, H. B. T., Olsen, John Elmerdahl & Dalsgaard, Anders, 2020, In: Veterinary Microbiology. 246, 108725.

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

    72. Published

      Prevalence and risk factors of Salmonella in commercial poultry farms in Nigeria

      Jibril, A. H., Okeke, I. N., Dalsgaard, Anders, Kudirkiene, E., Akinlabi, O. C., Bello, M. B. & Olsen, John Elmerdahl, 2020, In: PLoS ONE. 15, 9, p. 17 e0238190.

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

    73. Published

      Research note: Occurrence of mcr-encoded colistin resistance in Escherichia coli from pigs and pig farm workers in Vietnam

      Dang, S. T. T., Truong, D. T. Q., Olsen, John Elmerdahl, Tran, N. T., Truong, G. T. H., Vu, H. T. K. & Dalsgaard, Anders, 2020, In: FEMS Microbes. 1, 1, 6 p., xtaa003.

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

    74. 2019
    75. Published

      Antibiotic-Induced, Increased Conjugative Transfer Is Common to Diverse Naturally Occurring ESBL Plasmids in Escherichia coli

      Liu, G., Bogaj, K., Bortolaia, V., Olsen, John Elmerdahl & Thomsen, Line Elnif, 2019, In: Frontiers in Microbiology. 10, 2119.

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

    76. Published

      Cholera hotspots and surveillance constraints contributing to recurrent epidemics in Tanzania

      Hounmanou, Yaovi Mahuton Gildas, Mølbak, Kåre, Kähler, J., Mdegela, R. H., Olsen, John Elmerdahl & Dalsgaard, Anders, 2019, In: BMC Research Notes. 12, 6 p., 664.

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

    77. Published

      Effect of tetracycline treatment regimens on antibiotic resistance gene selection over time in nursery pigs

      Græsbøll, K., Larsen, Inge, Clasen, J., Birkegård, A. C., Nielsen, Jens Peter, Christiansen, L. E., Olsen, John Elmerdahl, Angen, Ø. & Folkesson, A., 2019, In: BMC Microbiology. 19, 1, 10 p., 269.

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

    78. Published

      Factors influencing Danish veterinarians’ choice of antimicrobials prescribed for intestinal diseases in weaner pigs

      Eriksen, E. Ø., Smed, S., Klit, K. J. M. & Olsen, John Elmerdahl, 2019, In: Veterinary Record. 184, 26, 10 p., 798.

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

    79. Published

      Genomic insights into Vibrio cholerae O1 responsible for cholera epidemics in Tanzania between 1993 and 2017

      Hounmanou, Yaovi Mahuton Gildas, Leekitcharoenphon, P., Kudirkiene, E., Mdegela, R. H., Hendriksen, R. S., Olsen, John Elmerdahl & Dalsgaard, Anders, 2019, In: PLOS Neglected Tropical Diseases . 13, 12, 14 p., e0007934.

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

    80. Published

      Identification of Genes Essential for Antibiotic-Induced Up-Regulation of Plasmid-Transfer-Genes in Cephalosporin Resistant Escherichia coli

      Liu, G., Olsen, John Elmerdahl & Thomsen, Line Elnif, 2019, In: Frontiers in Microbiology. 10, 9 p., 2203.

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

    81. Published

      Infectious potential of human derived uropathogenic Escherichia coli UTI86 in the reproductive tract of laying hens

      Mortensen, S., Johansen, A. E., Thoefner, Ida , Christensen, Jens Peter, Pors, S. E., Fresno, A. H., Møller-Jensen, J. & Olsen, John Elmerdahl, 2019, In: Veterinary Microbiology. 239, 108445.

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

    82. Published

      Interaction differences of the avian host-specific salmonella enterica serovar gallinarum, the host-generalist S. Typhimurium, and the cattle host-adapted S. Dublin with chicken primary macrophage

      Huang, K., Herrero-Fresno, A., Thoefner, Ida , Skov, Søren & Olsen, John Elmerdahl, 2019, In: Infection and Immunity. 87, 12, e00552-19.

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

    83. Published

      Reclassification of Bisgaard taxon 37 and taxon 44 as Psittacicella melopsittaci gen. nov., sp. nov., Psittacicella hinzii sp. nov. and Psittacicella gerlachiana sp. nov. within Psittacicellaceae fam. nov. of the order Pasteurellales

      Xin, D., Bisgaard, M., Busse, H. J., Olsen, Rikke Heidemann, Hess, C., Aalbæk, Bent, Olsen, John Elmerdahl & Christensen, Henrik, 2019, In: International Journal of Systematic and Evolutionary Microbiology. 69, 2, p. 350-355 6 p., 003133.

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

    84. Published

      Surveillance and Genomics of Toxigenic Vibrio cholerae O1 From Fish, Phytoplankton and Water in Lake Victoria, Tanzania

      Hounmanou, Yaovi Mahuton Gildas, Leekitcharoenphon, P., Hendriksen, R. S., Dougnon, T. V., Mdegela, R. H., Olsen, John Elmerdahl & Dalsgaard, Anders, 2019, In: Frontiers in Microbiology. 10, 15 p., 901.

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

    85. Published

      The SPI-19 encoded type-six secretion-systems (T6SS) of Salmonella enterica serovars Gallinarum and Dublin play different roles during infection

      Schroll, C., Huang, K., Ahmed, S., Kristensen, B. M., Pors, S. E., Jelsbak, L., Lemire, S., Thomsen, Line Elnif, Christensen, Jens Peter, Jensen, P. R. & Olsen, John Elmerdahl, 2019, In: Veterinary Microbiology. 230, p. 23-31 9 p.

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

    86. Published

      Tilapia (Oreochromis niloticus) as a Putative Reservoir Host for Survival and Transmission of Vibrio cholerae O1 Biotype El Tor in the Aquatic Environment

      Hounmanou, Yaovi Mahuton Gildas, Mdegela, R. H., Dougnon, T. V., Madsen, Henry, Withey, J. H., Olsen, John Elmerdahl & Dalsgaard, Anders, 2019, In: Frontiers in Microbiology. 10, 14 p., 1215.

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

    87. Published

      WGS based study of the population structure of Salmonella enterica serovar Infantis

      Gymoese, Pernille, Kiil, K., Torpdahl, M., Østerlund, M. T., Sørensen, G., Olsen, John Elmerdahl, Nielsen, E. M. & Litrup, E., 2019, In: BMC Genomics. 20, 1, 11 p., 870.

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

    88. 2018
    89. Published

      The Use of a Combined Bioinformatics Approach to Locate Antibiotic Resistance Genes on Plasmids From Whole Genome Sequences of Salmonella enterica Serovars From Humans in Ghana

      Kudirkiene, E., Andoh, L. A., Ahmed, S., Herrero Fresno, A., Dalsgaard, Anders, Obiri-Danso, K. & Olsen, John Elmerdahl, 17 May 2018, In: Frontiers in Microbiology. 9, 14 p., 1010.

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

    90. Published

      The membrane transporter PotE is required for virulence in avian pathogenic Escherichia coli (APEC)

      Guerra, Priscila Regina, Herrero-Fresno, A., Pors, S. E., Ahmed, S., Wang, D., Thoefner, Ida , Antenucci, F. & Olsen, John Elmerdahl, Mar 2018, In: Veterinary Microbiology. 216, p. 38-44 7 p.

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

    91. 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

    92. Published

      Investigation of the role of genes encoding zinc exporters zntA, zitB, and fieF during Salmonella typhimurium infection

      Huang, K., Wang, D., Frederiksen, R. F., Rensing, C., Olsen, John Elmerdahl & Fresno, A. H., Jan 2018, In: Frontiers in Microbiology. 8, 1, 11 p., 2656.

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

    93. Published

      Isolation of vancomycin-resistant Enterococcus from apparently healthy human animal attendants, cattle and cattle wastes in Tanzania

      Madoshi, B. P., Mtambo, M. M. A., Muhairwa, A. P., Lupindu, A. M. & Olsen, John Elmerdahl, Jan 2018, In: Journal of Applied Microbiology. 124, 5, p. 1303-1310 8 p.

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

    94. Published

      The Homolog of the Gene bstA of the BTP1 Phage from Salmonella enterica Serovar Typhimurium ST313 Is an Antivirulence Gene in Salmonella enterica Serovar Dublin

      Herrero-Fresno, A., Espinel, I. C., Spiegelhauer, M. R., Guerra, Priscila Regina, Andersen, Karsten Wiberg & Olsen, John Elmerdahl, Jan 2018, In: Infection and Immunity. 86, 1, 12 p., e00784-17.

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

    95. Published

      First Report on a Randomized Investigation of Antimicrobial Resistance in Fecal Indicator Bacteria from Livestock, Poultry, and Humans in Tanzania

      Katakweba, A. A. S., Muhairwa, A. P., Lupindu, A. M., Damborg, Peter Panduro, Rosenkrantz, J. T., Minga, U. M., Mtambo, M. M. A. & Olsen, John Elmerdahl, 2018, In: Microbial Drug Resistance. 24, 3, p. 260-268 9 p.

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

    96. Published

      Optimization of Antimicrobial Treatment to Minimize Resistance Selection

      Guardabassi, Luca, Apley, M., Olsen, John Elmerdahl, Toutain, P. L. & Weese, S., 2018, Antimicrobial Resistance in Bacteria from Livestock and Companion Animals. ASM Press, p. 637-674 (Microbiology Spectrum).

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

    97. Published

      Putrescine biosynthesis and export genes are essential for normal growth of avian pathogenic Escherichia coli

      Guerra, Priscila Regina, Herrero-Fresno, A., Ladero, V., Redruello, B., Dos Santos, T. P., Spiegelhauer, M. R., Jelsbak, L. & Olsen, John Elmerdahl, 2018, In: BMC Microbiology. 18, 12 p., 226.

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

    98. Published

      Salmonella Typhimurium metabolism affects virulence in the host – A mini-review

      Herrero-fresno, A. & Olsen, John Elmerdahl, 2018, In: Food Microbiology. 71, p. 98-110

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

    99. 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

    100. 2017
    101. Published

      Treatment with cefotaxime affects expression of conjugation associated proteins and conjugation transfer frequency of an IncI1 plasmid in Escherichia coli

      Møller, T. S. B., Liu, G., Boysen, A., Thomsen, Line Elnif, Lüthje, F. L., Mortensen, S., Møller-Jensen, J. & Olsen, John Elmerdahl, 29 Nov 2017, In: Frontiers in Microbiology. 8, 2365.

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

    102. Published

      Chromosomal features of Escherichia coli serotype O2:K2, an avian pathogenic E. coli

      Jørgensen, S. L., Kudirkiene, E., Li, L., Christensen, Jens Peter, Olsen, John Elmerdahl, Nolan, L. K. & Olsen, Rikke Heidemann, 10 May 2017, In: Standards in Genomic Sciences. 12, 9 p., 33.

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

    103. Published

      Genotype variation and genetic relationship among Escherichia coli from nursery pigs located in different pens in the same farm

      Herrero-Fresno, A., Ahmed, S., Hansen, M. H., Denwood, Matt, Zachariasen, C. & Olsen, John Elmerdahl, 5 Jan 2017, In: BMC Microbiology. 17, 10 p., 5.

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

    104. Published

      Effect of different oral oxytetracycline treatment regimes on selection of antimicrobial resistant coliforms in nursery pigs

      Herrero-Fresno, A., Zachariasen, C., Nørholm, N., Holm, A., Christiansen, L. E. & Olsen, John Elmerdahl, 2017, In: Veterinary Microbiology. 208, p. 1-7 7 p.

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

    105. Published

      Effect of tetracycline dose and treatment mode on selection of resistant coliform bacteria in nursery pigs

      Græsbøll, K., Damborg, Peter Panduro, Mellerup, A., Herrero-Fresno, A., Larsen, Inge, Holm, A., Nielsen, Jens Peter, Christiansen, L. E., Angen, Ø., Ahmed, S., Folkesson, A. & Olsen, John Elmerdahl, 2017, In: Applied and Environmental Microbiology. 83, 12, 12 p., e00538-17.

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

    106. Published

      Genetic clusters and circulation of Salmonella Dublin in Jutland

      de Knegt, Leonardo Victor, Kudirkiene, E., Sorensen, G., Nielsen, Liza Rosenbaum & Olsen, John Elmerdahl, 2017. 1 p.

      Research output: Contribution to conference › Poster › Research › peer-review

    107. Published

      Insight into synergetic mechanisms of tetracycline and the selective serotonin reuptake inhibitor, sertraline, in a tetracycline-resistant strain of Escherichia coli

      Li, L., Kromann, Sofie, Olsen, John Elmerdahl, Svenningsen, Søren Wedel & Olsen, Rikke Heidemann, 2017, In: Journal of Antibiotics. 70, 9, p. 944-953 10 p.

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

    108. Published

      Investigation of outbreaks of Salmonella enterica serovar typhimurium and its monophasic variants using whole-genome sequencing, Denmark

      Gymoese, Pernille, Sørensen, G., Litrup, E., Olsen, John Elmerdahl, Nielsen, E. M. & Torpdahl, M., 2017, In: Emerging Infectious Diseases . 23, 10, p. 1631-1639 9 p.

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

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