Rikke Heidemann Olsen

Rikke Heidemann Olsen

Associate Professor


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  1. Published

    In vitro and in vivo investigation on genomic stability of Salmonella enterica Typhimurium DT41 obtained from broiler breeders in Denmark

    Barua, H., Lindblom, I. L., Bisgaard, M., Christensen, Jens Peter, Olsen, Rikke Heidemann & Christensen, Henrik, 2013, In: Veterinary Microbiology. 166, 3-4, p. 607-616 10 p.

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

  2. Published

    Improved understanding of diseases asssociated with potential bacterial pathogens of poultry to be gained from multilocus sequence typing (MLST)

    Bisgaard, M., Olsen, Rikke Heidemann & Christensen, Henrik, 2010, European Poultry Conference. 4 p.

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

  3. Published

    Escherichia coli associeret sygdom i konsumægsektoren. Kortlægning af faktorer af betydning for sygdomsudviking og sygdomsforebyggelse

    Bisgaard, M., Olsen, Rikke Heidemann, Kyvsgaard, N. C., Christensen, Jens Peter & Christensen, Henrik, 2011, In: Dansk Erhvervsfjerkrae. 39, p. 130-133 4 p.

    Research output: Contribution to journal › Journal article › Communication

  4. Published

    MLST and MLSA of Enterococcus faecalis isolates demonstrating different lesion types in broiler parents

    Bisgaard, M., Petersen, A., Olsen, Rikke Heidemann & Christensen, Henrik, 2009. 1 p.

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

  5. Published

    Hvordan opstår og udvikler bakterielle infektioner sig i store fjerkræflokke

    Christensen, Henrik, Olsen, Rikke Heidemann, Pires dos Santos, T. M. S. & Bisgaard, M., 2013, In: Dansk Erhvervsfjerkrae. 42, 4, p. 216-221 6 p.

    Research output: Contribution to journal › Journal article › Research

  6. Published

    Escherichia coli in industrial poultry production: aspects of transmission and disease development

    Christensen, Jens Peter, Pors, S. E., Papasolomontos, S., Poulsen, Louise Ladefoged, Thoefner, Ida , Olsen, Rikke Heidemann, Christensen, Henrik & Bisgaard, M., Jun 2016, 16th International Conference on Production Diseases in Farm Animals: Book of abstracts. Wageningen Academic Publishers, p. 140 1 p.

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

  7. Published

    Draft genome sequences of two commensal Enterococcus cecorum strains isolated from chickens in Belgium

    Dolka, B., Boyen, F., Butaye, P., Olsen, Rikke Heidemann, Thoefner, Ida & Christensen, Jens Peter, 24 Sep 2015, In: Genome Announcements. 3, 5, 2 p., e01108-15.

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

  8. Published

    Draft genome sequences of five clinical Enterococcus cecorum strains isolated from different poultry species in Poland

    Dolka, B., Olsen, Rikke Heidemann, Thoefner, Ida & Christensen, Jens Peter, 2015, In: Genome Announcements. 3, 5, 2 p., e01085-15.

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

  9. Published

    Transmission and genetic diversity of Enterococcus faecalis among layer chickens during hatch

    Fertner, M. E., Olsen, Rikke Heidemann, Bisgaard, M. & Christensen, Henrik, 2011, In: Acta Veterinaria Scandinavica (Print). 53, 56, 6 p.

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

  10. Published

    The hygienic aspects in the management of strangles

    Fridberg, A., Adler, Ditte Marie Top, Jørgensen, M. G. & Olsen, Rikke Heidemann, 2023, In: Equine Veterinary Education. 35, 10, p. 540-550

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

  11. Published

    Chelonobacter oris gen. nov., sp. nov., a new member of the Pasteurellaceae

    Olsen, Rikke Heidemann, Neubauer, C., Christensen, Henrik, Bojesen, Anders Miki, Hess, M. & Bisgaard, M., 2008.

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

  12. Published

    Molecular characterization of APEC - a precondition for proper understanding and handling of outbreaks

    Olsen, Rikke Heidemann, Bojesen, Anders Miki, Christensen, Henrik & Bisgaard, M., 2009, Proceedings of the 5th WPSA International Symposium on Turkey Production, Berlin, Germany, 2009. Mensch und Buch Verlag, p. 277-285 9 p.

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

  13. Published

    Comparative studies on [Pasteurella] testudinis and [P.] testudinis-like bacteria and proposal of Chelonobacter oris gen. nov., sp. nov. as a new member of the family Pasteurellaceae

    Olsen, Rikke Heidemann, Neubauer, C., Christensen, Henrik, Bojesen, Anders Miki, Hess, M. & Bisgaard, M., 2009, In: International Journal of Systematic and Evolutionary Microbiology. 59, 7, p. 1583-1588 6 p.

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

  14. Published

    Characterization of pasteurellaceae-like bacteria isolated from clinically affected psittacine birds

    Olsen, Rikke Heidemann, Neubauer, C., Christensen, Henrik, Korczak, B., Bojesen, Anders Miki, Hess, M. & Bisgaard, M., 2010, In: Journal of Applied Microbiology. 108, 4, p. 1235-1243 9 p.

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

  15. Published

    Characterization of prevalent bacterial pathogens associated with pododermatitis in table egg layers

    Olsen, Rikke Heidemann, Christensen, Henrik, Kabell, S. & Bisgaard, M., 4 May 2018, In: Avian Pathology. 47, 3, p. 281-285 5 p.

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

  16. Published

    A novel derivative of thioridazine shows low toxicity and efficient activity against gram‐positive pathogens

    Jørgensen, N. S., Saaby, Lasse, Andersson, A. M., Kromann, Sofie, Sheikhsamani, E., Permin, A., Ronco, T., Svenningsen, Søren Wedel, Christensen, Jørn Bolstad & Olsen, Rikke Heidemann, 2020, In: Antibiotics. 9, 6, 11 p., 327.

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

  17. 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

  18. Published

    Diversity and population overlap between avian and human Escherichia coli belonging to sequence type 95

    Jørgensen, S. L., Stegger, M., Kudirkiene, E., Lilje, B., Poulsen, Louise Ladefoged, Ronco, T., Dos Santos, T. P., Kiil, K., Bisgaard, M., Pedersen, K., Nolan, L. K., Price, L. B., Olsen, Rikke Heidemann, Andersen, P. S. & Christensen, Henrik, 2019, In: mSphere. 4, 1, 12 p., e00333-18.

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

  19. Published

    Longitudinal study on background lesions in broiler breeder flocks and their progeny, and genomic characterisation of Escherichia coli

    Kromann, Sofie, Baig, S., Stegger, M., Olsen, Rikke Heidemann, Bojesen, Anders Miki, Jensen, Henrik Elvang & Thoefner, Ida , 2022, In: Veterinary Research. 53, 52.

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

  20. Published

    Protective potential of an autogenous vaccine in an aerogenous model of escherichia coli infection in broiler breeders

    Kromann, Sofie, Olsen, Rikke Heidemann, Bojesen, Anders Miki, Jensen, Henrik Elvang & Thoefner, Ida , 2021, In: Vaccines. 9, 11, 1233.

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

  21. Published

    A SEVERE OUTBREAK OF COLIBACILLOSIS IN BROILERS

    Kromann, Sofie, Baig, S. J., Olsen, Rikke Heidemann, Edslev, S. M., Thoefner, Ida , Bojesen, Anders Miki, Jensen, Henrik Elvang & Stegger, M., 29 Aug 2023.

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

  22. Published

    Establishment and application of an aerogenous model of avian colibacillosis

    Kromann, Sofie, Olsen, Rikke Heidemann, Bojesen, Anders Miki, Thoefner, Ida & Jensen, Henrik Elvang, 2023.

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

  23. Published

    Treatment with high-dose antidepressants severely exacerbates the pathological outcome of experimental Escherichia coli infections in poultry

    Kromann, Sofie, Kudirkiene, E., Li, L., Thoefner, Ida , Daldorph, E., Christensen, Jens Peter, Meng, H. & Olsen, Rikke Heidemann, 2017, In: PLoS ONE. 12, 10, 15 p., e0185914.

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

  24. Published

    Development of an aerogenous Escherichia coli infection model in adult broiler breeders

    Kromann, Sofie, Olsen, Rikke Heidemann, Bojesen, Anders Miki, Jensen, Henrik Elvang & Thoefner, Ida , 2021, In: Scientific Reports. 11, 15 p., 19556.

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

  25. Published

    Assessment of automated assays for serum amyloid A, haptoglobin (PIT54) and basic biochemistry in broiler breeders experimentally infected with Escherichia coli

    Kromann, Sofie, Olsen, Rikke Heidemann, Bojesen, Anders Miki, Jensen, Henrik Elvang & Thoefner, Ida , 2022, In: Veterinary Research. 53, 1, 7 p., 25.

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

  26. Published

    In vitro synergy of sertraline and tetracycline cannot be reproduced in pigs orally challenged with a tetracycline resistant Escherichia coli

    Kromann, Sofie, Hvidtfeldt, A., Boye, M., Sørensen, Dorte Bratbo, Jørgensen, S., Nielsen, Jens Peter & Olsen, Rikke Heidemann, 2019, In: BMC Microbiology. 19, 1, 12 p., 12.

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

  27. Published

    Dramatic increase in slaughter condemnations due to Escherichia coli ST23 and ST101 within the Danish broiler production

    Kromann, Sofie, Baig, S., Olsen, Rikke Heidemann, Edslev, S. M., Thoefner, Ida , Bojesen, Anders Miki, Jensen, Henrik Elvang & Stegger, M., 2023, In: Veterinary Microbiology. 280, 109696.

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

  28. Published

    First report of two foodborne Salmonella enterica subsp. enterica serovar Bovismorbificans isolates carrying a novel mega-plasmid harboring blaDHA-1 and qnrB4 genes

    Li, L., Olsen, Rikke Heidemann, Wang, C., Song, A., Xiao, J., Meng, H., Ronco, T. & Shi, L., 2021, In: International Journal of Food Microbiology. 360, 109439.

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

  29. Published

    Genetic context of blaCTX–M–55 and qnrS1 genes in a foodborne Salmonella enterica serotype Saintpaul isolate from China

    Li, L., Olsen, Rikke Heidemann, Xiao, J., Meng, H., Peng, S. & Shi, L., 2022, In: Frontiers in Microbiology. 13, 899062.

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

  30. Published

    First Report of a Foodborne Salmonella enterica Serovar Gloucester (4:i:l,w) ST34 Strain Harboring blaCTX–M–55 and qnrS Genes Located in IS26-Mediated Composite Transposon

    Li, L., Olsen, Rikke Heidemann, Song, A., Xiao, J., Wang, C., Meng, H. & Shi, L., 2021, In: Frontiers in Microbiology. 12, 646101.

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

  31. Published

    Characterization of a Streptococcus species isolated from Siganus guttatus in South China

    Li, L., Wang, C., Olsen, Rikke Heidemann, Li, X., Meng, H., Xu, L. & Shi, L., 2021, In: Aquaculture. 545, 737163.

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

  32. Published

    Antibiotic resistance and polymyxin B resistance mechanism of Aeromonas spp. isolated from yellow catfish, hybrid snakeheads and associated water from intensive fish farms in Southern China

    Li, L., Yao, R., Olsen, Rikke Heidemann, Zhang, Y. & Meng, H., 2022, In: LWT. 166, 113802.

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

  33. Published

    Characterization of a plasmid carrying cat, ermB and tetS genes in a foodborne Listeria monocytogenes strain and uptake of the plasmid by cariogenic Streptococcus mutans

    Li, L., Olsen, Rikke Heidemann, Shi, L., Ye, L., He, J. & Meng, H., 5 Dec 2016, In: International Journal of Food Microbiology. 238, p. 68-71 4 p.

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

  34. 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

  35. Published

    Characterization of Antimicrobial Resistance of Listeria monocytogenes Strains Isolated from a Pork Processing Plant and Its Respective Meat Markets in Southern China

    Li, L., Olsen, Rikke Heidemann, Ye, L., Wang, W., Shi, L., Yan, H. & Meng, H., May 2016, In: Foodborne pathogens and disease. 13, 5, p. 262-668 7 p.

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

  36. Published

    Exploring the resistome, virulome, mobilome and microbiome along pork production chain using metagenomics

    Li, L., Xiao, Y., Wang, C., Olsen, Rikke Heidemann, Meng, H. & Shi, L., 2022, In: International Journal of Food Microbiology. 371, 109674.

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

  37. Published

    Characterization of extended-spectrum cephalosporins and fluoroquinolone resistance of a Salmonella enterica serovar Thompson isolate from ready-to-eat pork product in China

    Li, L., Olsen, Rikke Heidemann, Xiao, J., Liang, M., Meng, H. & Peng, S., 2022, In: Frontiers in Microbiology. 13, 964009.

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

  38. Published

    Genomic Characterization of mcr-1-Carrying Foodborne Salmonella enterica serovar Typhimurium and Identification of a Transferable Plasmid Carrying mcr-1, blaCTX-M-14, qnrS2, and oqxAB Genes From Ready-to-Eat Pork Product in China

    Li, L., Wan, X., Olsen, Rikke Heidemann, Xiao, J., Wang, C., Xu, X., Meng, H. & Shi, L., 2022, In: Frontiers in Microbiology. 13, 903268.

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

  39. Published

    Short- and long-read metagenomics insight into the genetic contexts and hosts of mobile antibiotic resistome in Chinese swine farms

    Li, L., Xiao, Y., Olsen, Rikke Heidemann, Wang, C., Meng, H. & Shi, L., 2022, In: Science of the Total Environment. 827, 154352.

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

  40. Published

    Evaluation of the efficacy of an autogenous Escherichia coli vaccine in broiler breeders

    Li, L., Thoefner, Ida , Christensen, Jens Peter, Ronco, T., Pedersen, K. & Olsen, Rikke Heidemann, Jun 2017, In: Avian pathology : journal of the W.V.P.A. 46, 3, p. 300-308 9 p.

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

  41. Published

    Antimicrobial Resistance and Resistance Genes in Aerobic Bacteria Isolated from Pork at Slaughter

    Li, L., Olsen, Rikke Heidemann, Ye, L., Yan, H., Nie, Q., Meng, H. & Shi, L., Apr 2016, In: Journal of Food Protection. 79, 4, p. 589-597 9 p.

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

  42. Published

    Draft genome sequences of three human pathogenic acinetobacter baumannii strains

    Madhi, M., Ronco, T., Hasani, A. & Olsen, Rikke Heidemann, 2019, In: Microbiology Resource Announcements. 8, 14, 2 p., e01742-18.

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

  43. Published

    Epidemiological Prevalence of Phenotypical Resistances and Mobilised Colistin Resistance in Avian Commensal and Pathogenic E. coli from Denmark, France, The Netherlands, and the UK

    Mead, A., Billon-Lotz, C., Olsen, Rikke Heidemann, Swift, B., Richez, P., Stabler, R. & Pelligand, L., 2022, In: Antibiotics. 11, 5, 631.

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

  44. Published

    Impact of egg disinfection of hatching eggs on the eggshell microbiome and bacterial load

    Olsen, Rikke Heidemann, Kudirkiene, E., Thoefner, Ida , Pors, S., Karlskov-Mortensen, Peter, Li, L., Papasolomontos, S., Angastiniotou, C. & Christensen, Jens Peter, Nov 2017, In: Poultry Science. 96, 11, p. 3901-3911

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

  45. Published

    Clonality and virulence traits of Escherichia coli associated with hemorrhagic septicaemia in turkeys

    Olsen, Rikke Heidemann, Chadfield, M. S., Christensen, Jens Peter, Scheutz, F., Christensen, Henrik & Bisgaard, M., 2011, In: Avian Pathology. 40, 6, p. 587-595 9 p.

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

  46. Published

    Impact of Nobilis Escherichia coli inac vaccine on parent stock mortality, first week mortality of broilers, and population diversity of E. coli in vaccinated flocks

    Olsen, Rikke Heidemann, Christensen, Henrik & Bisgaard, M., 2009. 1 p.

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

  47. Published

    Impact of Escherichia coli vaccine on parent stock mortality, first week mortality of broilers and population diversity of E. coli in vaccinated flocks

    Olsen, Rikke Heidemann, Christensen, Henrik, Ewers, C. & Bisgaard, M., 2010, In: Avian Pathology. 39, 4, p. 287-295 9 p.

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

  48. Published

    Experimental induced avian E. coli salpingitis: significant impact of strain and host factors on the clinical and pathological outcome

    Olsen, Rikke Heidemann, Thoefner, Ida , Pors, S. E., Pires dos Santos, T. M. S. & Christensen, Jens Peter, 2016, In: Veterinary Microbiology. 188, p. 59-66 8 p.

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

  49. Published

    Transmission and genetic diversity of Enterococcus faecalis during hatch of broiler chicks

    Olsen, Rikke Heidemann, Christensen, Henrik & Bisgaard, M., 2012, In: Veterinary Microbiology. 160, 1-2, p. 214-221 8 p.

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

  50. Published

    Enterococcus faecalis of human and poultry origin share virulence genes supporting the zoonotic potential of E. faecalis

    Olsen, Rikke Heidemann, Schønheyder, H. C., Christensen, Henrik & Bisgaard, M., 2012, In: Zoonoses and Public Health. 59, 4, p. 256-263 8 p.

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

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ID: 6576950