Henrik Christensen

Henrik Christensen

Associate Professor

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    ORCID: 0000-0003-4238-4658

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    1. Published

      Genetic analysis of Trichuris suis and Trichuris trichiura recovered from humans and pigs in a sympatric setting in Uganda

      Nissen, S., Al-Jubury, Azmi, Hansen, Tina Vicky Alstrup, Olsen, A., Christensen, Henrik, Thamsborg, Stig Milan & Nejsum, P., 2012, In: Veterinary Parasitology. 188, 1-2, p. 68-77 10 p.

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

    2. Published

      Genetic variation in whipworm (trichuris spp.) populations

      Nissen, S., Nejsum, P., Christensen, Henrik, Olsen, A. & Thamsborg, Stig Milan, 2009. 1 p.

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

    3. Published

      Genetic variation of Trichuris spp. obtained from humans and pigs

      Nissen, S., Al-Jubury, A., Olsen, A., Christensen, Henrik, Thamsborg, Stig Milan & Nejsum, P., 2010, Congress handbook: the XIIth international congress of parasitology: Australia, 2010. Australian Society for Parasitology, 1 p.

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

    4. Published

      Morphological and Genetic Diversity of Trichuris spp. recovered from Humans and Pigs

      Nissen, S., Nejsum, P., Christensen, Henrik, Olsen, A. & Thamsborg, Stig Milan, 2009,  One World, one Health - Parasites in a changing landscape. p. 109-110 1 p.

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

    5. Published

      Morphological and molecular characterization of Trichuris spp. obtained from humans and pigs

      Nissen, S., Nejsum, P., Christensen, Henrik, Olsen, A. & Thamsborg, Stig Milan, 2009.

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

    6. Published

      Evaluation of a fluorescence-labelled oligonucleotide probe targeting 23S rRNA for in situ detection of Salmonella serovars in paraffin-embedded tissue sections and their rapid identification in bacterial smears

      Nordentoft, S., Christensen, Henrik & Wegener, H. C., 1997, In: Journal of Clinical Microbiology. 35, 10, p. 2642-2648 7 p.

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

    7. Published

      Delineation of the genus Actiobacillus by comparison of partial infB sequences

      Nørskov-Lauritsen, N., Christensen, Henrik, Okkels, H., Killian, M. & Brun, B., 2004, In: International Journal of Systematic and Evolutionary Microbiology. 54, p. 635-644 10 p.

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

    8. Published

      A ¤typing concept for Salmonella

      Olsen, John Elmerdahl, Lau Baggesen, D., Christensen, Henrik & Platt, D. J., 1997. 1 p.

      Research output: Contribution to conference › Paper › Research

    9. Published

      A ¤typing concept for Salmonella

      Olsen, John Elmerdahl, Lau Baggesen, D., Christensen, Henrik & Platt, D. J., 1998, EUR. Aspán, A. & Mulder, R. W. A. W. (eds.). 18209 ed. Publications Office, p. 97-103 7 p.

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

    10. Published

      The current state of Pasteurellaceae systematics

      Olsen, John Elmerdahl, Bisgaard, M., Kubnert, P. & Christensen, Henrik, 2005, Pasteurellaceae 2005. American Society of Microbiology, p. 14 1 p.

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

    11. Published

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

      Olsen, John Elmerdahl, Christensen, Henrik & Aarestrup, F. M., 2006, In: Journal of Antimicrobial Chemotherapy. 57, 3, p. 450-460 11 p.

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

    12. Published

      Investigation of chicken intestinal bacterial communities by 16S rRNA targeted fluorescence in situ hybridization

      Olsen, K. N., Henriksen, M. M. M., Bisgaard, M., Nielsen, O. L. & Christensen, Henrik, 2008, In: Antonie van Leeuwenhoek. International Journal of General and Molecular Microbiology. 94, 3, p. 423-437 15 p.

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

    13. Published

      Fluoroscence in situ hybridization of chicken intestinal samples with bacterial rRNA targeted oligonucleotide probes

      Olsen, K. N., Francesch, M. & Christensen, Henrik, 2006, Ikke angivet. Romboli, I., Flock, D. & Franchini, A. (eds.). World's Poultry Science Association, 6 p. (World's Poultry Science Journal; No. Suppl.).

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

    14. 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

    15. Published

      An investigation on first-week mortality in layers

      Olsen, Rikke Heidemann, Frantzen, C., Christensen, Henrik & Bisgaard, M., 2012, In: Avian Diseases. 56, 1, p. 51-57 7 p.

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

    16. Published

      Virulence factors of Enterococcus faecalis of human and poultry origin seem to confirm the zoonotic potential of E. faecalis.

      Olsen, Rikke Heidemann, Schønheyder, H., Christensen, Henrik & Bisgaard, M., 2011, 17th World Veterinary Poultry Congress: proceedings. WVPA, p. 474-476 3 p.

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

    17. Published

      Multilocus sequence typing of Enterococcus faecalis isolates demonstrating different lesion types in broiler breeders

      Olsen, Rikke Heidemann, Petersen, A., Christensen, Henrik & Bisgaard, M., 2010, In: Avian Pathology. 39, 6, p. 435-440 6 p.

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

    18. Published

      Extended-spectrum β-lactamase-producing Escherichia coli isolated from poultry: a review of current problems, illustrated with some laboratory findings

      Olsen, Rikke Heidemann, Bisgaard, M., Löhren, U., Robineau, B. & Christensen, Henrik, 2014, In: Avian Pathology. 43, 3, p. 199-208 10 p.

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

    19. Published

      Genetic diversity of Escherichia coli associated with increased mortality in free-range layers concurrently infected with Histomonas meleagridis as demonstrated by plasmid profiling and multilocus sequence typing (MLST)

      Olsen, Rikke Heidemann, Stockholm, N. M., Permin, A., Christensen, Jens Peter, Christensen, Henrik & Bisgaard, M., 2011, 17th World Veterinary Poultry Congress: proceedings. WVPA, p. 754-756 3 p.

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

    20. Published

      Characterization of diversity and virulence traits of Escherichia coli associated with haemorrhagic septicaemia outbreaks in turkeys

      Olsen, Rikke Heidemann, Chadfield, M. S., Christensen, Jens Peter, Scheutz, F., Christensen, Henrik & Bisgaard, M., 2011, 17th World Veterinary Poultry Congress: proceedings. WVPA, p. 471-473 3 p.

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

    21. Published

      Draft genome sequences of three Escherichia coli strains with different In Vivo pathogenicities in an avian (Ascending) infection model of the oviduct

      Olsen, Rikke Heidemann, Thoefner, Ida , Pors, S. E., Christensen, Henrik, Bisgaard, M. & Christensen, Jens Peter, 2015, In: Genome Announcements. 3, 3, 2 p., e00399-15 .

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

    22. Published

      Comparative genomics of multiple plasmids from APEC associated with clonal outbreaks demonstrates major similarities and identifies several potential vaccine-targets.

      Olsen, Rikke Heidemann, Christensen, Henrik & Bisgaard, M., 2012, In: Veterinary Microbiology. 158, 3-4, p. 384-393 10 p.

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

    23. Published

      Pathology and Molecular Characterization of Escherichia Coli Associated With the Avian Salpingitis-Peritonitis Disease Syndrome

      Olsen, Rikke Heidemann, Bisgaard, M., Christensen, Jens Peter, Kabell, S. & Christensen, Henrik, Mar 2016, In: Avian Diseases. 60, 1, p. 1-7 7 p.

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

    24. Published

      Multi-locus sequence typing and plasmid profile characterization of avian pathogenic Escherichia coli associated with increased mortality in free-range layer flocks

      Olsen, Rikke Heidemann, Stockholm, N. M., Permin, A., Christensen, Jens Peter, Christensen, Henrik & Bisgaard, M., 2011, In: Avian Pathology. 40, 5, p. 437-444 8 p.

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

    25. 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

    26. 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

    27. 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

    28. 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

    29. Published

      Molecular characterization and phylogenetic study of Newcastle disease virus isolates from recent outbreaks in eastern Uganda

      Otim, M. O., Christensen, Henrik, Jørgensen, P. H., Handberg, K. J. & Bisgaard, M., 2004, In: Journal of Clinical Microbiology. 42, 6, p. 2802-2805 4 p.

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

    30. Published

      A study of risk factors associated with Newcastle disease epidemics in village free-range chickens in Uganda

      Otim, M. O., Kabagambe, E. K., Mukiibi, G. M., Christensen, Henrik & Bisgaard, M., 2007, In: Tropical Animal Health and Production. 39, 1, p. 27-35 9 p.

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

    31. Published

      Aflatoxicosis, infectious bursal disease and immune response to Newcastle disease vaccination in rural chickens

      Otim, M. O., Mukiibi-Muka, G., Christensen, Henrik & Bisgaard, M., 2005, In: Avian Pathology. 34, 4, p. 319-323 5 p.

      Research output: Contribution to journal › Journal article › Research

    32. Published

      Sensory, chemical and bacteriological changes during storage of iced squid (Todaropsis eblanae)

      Paarup, T., Sanchez, J. A., Moral, A., Christensen, Henrik, Bisgaard, M. & Gram, L., 2002, In: Journal of Applied Microbiology. 92, 5, p. 941-950 10 p.

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

    33. Published

      Detection of a well defined clonal lineage of Pasteurella moltocida associated with fowl cholera by real-time PRR

      Petersen, A., Bisgaard, M., Larsen, J. & Christensen, Henrik, 2009. 1 p.

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

    34. Published

      Development of a multilocus sequence typing (MLST) scheme for Mannheimia haemolytica and assessment of the population structure of isolates obtained from cattle and sheep

      Petersen, A., Christensen, Henrik, Kodjo, A., Weiser, G. C. & Bisgaard, M., 2009, In: Infection, Genetics and Evolution. 9, 4, p. 626-632 7 p.

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

    35. Published

      MLST typing of Pasteurella multocida associated with haemorrhagic septicaemia and development of a real-time PCR specific for haemorrhagic septicaemia associated isolates

      Petersen, A., Bisgaard, M., Townsend, K. & Christensen, Henrik, 2014, In: Veterinary Microbiology. 170, 3-4, p. 335-341 7 p.

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

    36. Published

      Investigations on the existence of a global clone of Enterococcus faecalis associated with amyloid arthropathy in chickens

      Petersen, A., Christensen, Henrik & Bisgaard, M., 2007, . p. 254 1 p.

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

    37. Published

      Characterization of small-colony variants of Enterococcus faecalis isolated from chickens with amyloid arthropathy

      Petersen, A. H. H., Chadfield, M. S., Christensen, Jens Peter, Christensen, Henrik & Bisgaard, M., 2008, In: Journal of Clinical Microbiology. 46, 8, p. 2686-2691 6 p.

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

    38. Published

      Mutations in gyrA and parC in Pasteurella multocida with decreased sensitivity to enrofloxacin

      Petersen, A. H. H., Christensen, Henrik & Bisgaard, M., 2008. 1 p.

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

    39. Published

      Development of a MLST typing scheme for Mannheimia haemolytica

      Petersen, A. H. H., Bisgaard, M. & Christensen, Henrik, 2008. 1 p.

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

    40. Published

      Detection of Enterococcus faecalis  ST82 associated with amyloid arthropathy by real-time PCR.

      Petersen, A. H. H., Bisgaard, M. & Christensen, Henrik, 2009. 1 p.

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

    41. Published

      Clonality of Enterococcus faecalis associated with amyloid arthropathy in chickens evaluated by multilocus sequence typing (MLST)

      Petersen, A. H. H., Christensen, Henrik, Philipp, H. & Bisgaard, M., 2009, In: Veterinary Microbiology. 134, 3-4, p. 392-395 4 p.

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

    42. Published

      Real-time PCR detection of Enterococcus faecalis  associated with amyloid arthropathy

      Petersen, A. H. H., Bisgaard, M. & Christensen, Henrik, 2010, In: Journal of Applied Microbiology. 51, 1, p. 61-64 4 p.

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

    43. Published

      Genetic diversity of Pasteurella multocida fowl cholera isolates as demonstrated by ribotyping and 16S rRNA and partial atpD sequence comparisons

      Petersen, K. D., Christensen, Henrik, Bisgaard, M. & Olsen, John Elmerdahl, 2001, In: Microbiology. 147, p. 2739-2748 10 p.

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

    44. Published

      Investigations on the genetic relationship between subspecies of Pasteurella multocida as demonstrated by ribotyping and 16S rRNA sequencing

      Petersen, K. D., Christensen, Henrik, Christensen, Jens Peter & Bisgaard, M., 1999. 2 p.

      Research output: Contribution to conference › Paper › Research

    45. Published

      Diversity and stability of the genetic population structure of Escherichia coli isolated from broiler production

      Pires dos Santos, T. M. S., Kyvsgaard, N. C., Bisgaard, M. & Christensen, Henrik, 2011, 17th World Veterinary Poultry Congress: proceedings. WVPA, p. 770-771 2 p.

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

    46. Published

      Genetic diversity and virulence profiles of Escherichia coli causing salpingitis and peritonitis in broiler breeders

      Pires dos Santos, T. M. S., Bisgaard, M. & Christensen, Henrik, 2013, In: Veterinary Microbiology. 162, 2-4, p. 873-880 8 p.

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

    47. Published

      Chronic salpingitis and peritonitis in chickens due to Escherichia coli infection - a possible model for extraintestinal infections in humans

      Pires dos Santos, T. M. S., Kyvsgaard, N. C., Bisgaard, M. & Christensen, Henrik, 2011, 17th World Veterinary Poultry Congress: proceedings. WVPA, p. 772-774 3 p.

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

    48. Published

      Detection of Enterococcus feacalis in chicken tissue sections by fluorescent 16S rRNA in situ hybridization

      Pires dos Santos, T. M. S., Pors, S. E., Nielsen, O. L., Christensen, Henrik, Petersen, A., Larsen, J. & Bisgaard, M., 2009. 1 p.

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

    49. Published

      Occurrence of weak mutators among avian pathogenic Escherichia coli (APEC) isolates causing salpingitis and peritonitis in broiler breeders

      Pires dos Santos, T. M. S., Bisgaard, M., Kyvsgaard, N. C. & Christensen, Henrik, 2014, In: Veterinary Microbiology. 168, 1, p. 141-147 7 p.

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

    50. Published

      Comparison of Sul2 resistant gene from Escherichia coli isolated from animals and humans

      Porro, M. T., Hammerum, A. M., Sunde, M., Pedersen, K., Agersø, Y., Christensen, Henrik & Olsen, John Elmerdahl, 2007, Ikke angivet. ASM, 1 p.

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

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