Henrik Christensen

Henrik Christensen

Associate Professor

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    ORCID: 0000-0003-4238-4658

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    1. Published

      Diversity of the tetracycline resistance gene tet(M) and identification of Tn916- and Tn5801-like (Tn6014) transposons in Staphylococcus aureus from humans and animals

      de Vries, Lisbeth Elvira, Christensen, Henrik, Skov, R. L., Aarestrup, F. M. & Agersø, Y., 2009, In: Journal of Antimicrobial Chemotherapy. 64, 3, p. 490-500 11 p.

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

    2. Published

      The diversity of inducible and constitutively expressed erm(C) genes and association to different replicon types in staphylococci plasmids

      de Vries, Lisbeth Elvira, Christensen, Henrik & Agersø, Y., 2012, In: Mobile Genetic Elements. 2, 2, p. 72-80 9 p.

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

    3. Published

      The gut as reservoir of antibiotic resistance: microbial diversity of tetracycline resistance in mother and infant

      de Vries, Lisbeth Elvira, Vallès, Y., Agersø, Y., Vaishampayan, P. A., Garcia-Montaner, A., Kuehl, J. V., Christensen, Henrik, Barlow, M. & Francino, M. P., 2011, In: P L o S One. 6, 6, 11 p.

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

    4. Published

      Draft genome sequence of Streptococcus equi subsp. zooepidemicus strain S31A1, isolated from equine infectious endometritis

      da Piedade, I., Skive, Bolette, Christensen, Henrik & Bojesen, Anders Miki, 2013, In: Genome Announcements. 1, 5, 2 p., e00683-13.

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

    5. Published

      On the origin and diversity of Newcastle disease virus in Tanzania

      Yongolo, M. G., Christensen, Henrik, Handberg, K., Minga, U. & Olsen, John Elmerdahl, 2011, In: Onderstepoort Journal of Veterinary Research. 78, 1, 8 p.

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

    6. 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

    7. Published

      Differentiation of Shewanella putrefaciens and Shewanella alga on the basis of whole-cell protein profiles, rybotyping, phenotypic characterization, and 16S rRNA gene sequence analysis

      Vogel, B. F., Jørgensen, K., Christensen, Henrik, Olsen, John Elmerdahl & Gram, L., 1997, In: Applied and Environmental Microbiology. 63, 6, p. 2189-2199 11 p.

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

    8. Published

      Polyphasic taxonomic approach in the description of Alishewanella fetalis gen. nov., sp. nov., isolated from a human foetus

      Vogel, B. F., Venkateswaran, K., Christensen, Henrik, Falsen, E., Christiansen, G. & Gram, L., 2000, In: International Journal of Systematic and Evolutionary Microbiology. 50, p. 1133-1142 10 p.

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

    9. Published

      Identification and antimicrobial resistance of bacteria isolated from probiotic products used in shrimp culture

      Uddin, G. M. N., Larsen, M. H., Christensen, Henrik, Aarestrup, F. M., Phu, T. M. & Dalsgaard, Anders, 16 Jul 2015, In: PloS one. 10, 7, 21 p., e0132338.

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

    10. Published

      Glaesserella Australis sp. nov., isolated from the lungs of pigs

      Turni, C., Wu, Y., Omaleki, L., Giang, N., Blackall, P. J. & Christensen, Henrik, 2020, In: International Journal of Systematic and Evolutionary Microbiology. 70, 6, p. 3686-3692 7 p., 004221.

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

    11. Published

      Characterization of sulphonamide-resistant Escherichia coli using comparison of sul2 gene sequences and multilocus sequence typing

      Trobos Porro, M., Christensen, Henrik, Sunde, M., Nordentoft, S., Agersø, Y., Simonsen, G. S., Hammerum, A. M. & Olsen, John Elmerdahl, 2009, In: Microbiology. 155, p. 831-836 6 p.

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

    12. Published

      Source tracking of sulphonamide resistance in Escherichia coli using comparison of sul2 gene sequences and MLST typing

      Trobos, M., Hammerum, A. M., Sunde, M., Nordentoft, S., Agersø, Y., Simonsen, G. S., Christensen, Henrik & Olsen, John Elmerdahl, 2009.

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

    13. Published

      Transmission dynamics of Mannheimia haemolytica in newly-received beef bulls at fattening operations

      Timsit, E., Christensen, Henrik, Bareille, N., Seegers, H., Bisgaard, M. & Assié, S., 2013, In: Veterinary Microbiology. 161, 3-4, p. 295-304 10 p.

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

    14. Published

      Correlation between footpad lesions and systemic bacterial infections in broiler breeders

      Thoefner, Ida , Poulsen, Louise Ladefoged, Bisgaard, M., Christensen, Henrik, Olsen, Rikke Heidemann & Christensen, Jens Peter, 2019, In: Veterinary Research. 50, 1, 5 p., 38.

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

    15. Published

      Longitudinal study of mortality observed in four broiler breeder flocks

      Thoefner, Ida , Poulsen, Louise Ladefoged, Bisgaard, M., Christensen, Henrik, Olsen, Rikke Heidemann & Christensen, Jens Peter, Sep 2015, 19th World Veterinary Poultry Association Congress. Cape Town, p. 148-148 1 p.

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

    16. Published

      Infections with Gram positive cocci in broiler breeders: significance and prevalence

      Thoefner, Ida , Poulsen, Louise Ladefoged, Olsen, Rikke Heidemann, Christensen, Henrik, Bisgaard, M. & Christensen, Jens Peter, Jun 2016, 16th International Conference on Production Diseases in Farm Animals: Book of abstracts. Wageningen, Netherlands: Wageningen Academic Publishers, p. 141-141 1 p.

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

    17. Published

      Systemic reactive amyloidosis - an age related problem of importance in broiler breeders

      Thoefner, Ida , Poulsen, Louise Ladefoged, Bisgaard, M., Christensen, Henrik, Olsen, Rikke Heidemann & Christensen, Jens Peter, Sep 2015.

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

    18. Published

      Longitudinal Study on Causes of Mortality in Danish Broiler Breeders

      Thoefner, Ida , Poulsen, Louise Ladefoged, Bisgaard, M., Christensen, Henrik, Olsen, Rikke Heidemann & Christensen, Jens Peter, 2019, In: Avian Diseases. 63, 3, 400-410.

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

    19. Published

      Investigations of the pathogenesis of Staphylococcus aureus and Enterococcus faecalis in an experimental footpad infection model in broiler breeders

      Thoefner, Ida , Olsen, Rikke Heidemann, Poulsen, Louise Ladefoged, Christensen, Henrik, Bisgaard, M. & Christensen, Jens Peter, Oct 2016, Vetpath 2016 conference abstracts. Prato, p. 5-5 1 p.

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

    20. Published

      Polyamines are essential for virulence in Salmonella enterica serovar Gallinarum despite evolutionary decay of polyamine biosynthesis genes

      Schroll, C., Christensen, Jens Peter, Christensen, Henrik, Pors, S. E., Thorndahl, L., Jensen, P. R., Olsen, John Elmerdahl & Jelsbak, L., 2014, In: ScienceDirect, Veterinary Microbiology. 170, 1-2, p. 144-150 7 p.

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

    21. Published

      Studies on the prevalence of Riemerella anatipestifer in the upper respiratory tract of clinically healthy ducklings and characterization of untypable strains

      Ryll, M., Christensen, Henrik, Bisgaard, M., Christensen, Jens Peter, Hinz, K. & Köhler, B., 2001, In: Zoonoses and Public Health. 48, p. 537-546 10 p.

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

    22. Published

      Description of Riemerella columbipharyngis sp. nov., isolated from the pharynx of healthy domestic pigeons (Columba livia f. domestica), and emended descriptions of the genus Riemerella, Riemerella anatipestifer and Riemerella columbina

      Rubbenstroth, D., Ryll, M., Hotzel, H., Christensen, Henrik, Knobloch, J. K., Rautenschlein, S. & Bisgaard, M., 2013, In: International Journal of Systematic and Evolutionary Microbiology. 63, 1, p. 280-287 8 p.

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

    23. Published

      Atypical actinobacillosis affecting hind limbs and lungs in a single beef cattle herd

      Relun, A., Cesbron, N., Bourdeau, P., Dorso, L., Brement, T., Assié, S., Christensen, Henrik & Guatteo, R., 2019, In: Journal of Veterinary Internal Medicine. 33, 1, p. 297-301 5 p.

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

    24. Detection of Yersinia enterocolitica O:3 in faecal samples and tonsil swabs from pigs using IMS and PCR

      Rasmussen, H. N., Rasmussen, O. F., Christensen, Henrik & Olsen, John Elmerdahl, 1995, In: Journal of Applied Bacteriology. 78, 5, p. 563-8

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

    25. Published

      Involvement of bacterial quorum-sensing signals in spoilage of bean sprouts

      Rasch, M., Andersen, Jens Bo, Nielsen, K. F., Flodgaard, L. R., Christensen, Henrik, Givskov, Michael & Gram, L., 2005, In: Applied and Environmental Microbiology. 71, 6, p. 3321-30 9 p.

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

    26. Published

      Molecular mechanisms of E. coli causing outbreaks of cellulitis in broilers

      Poulsen, Louise Ladefoged, Jørgensen, S. L., Bisgaard, M. & Christensen, Henrik, 2016. 1 p.

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

    27. Published

      Staphylococcus agnetis, a potential pathogen in broiler breeders

      Poulsen, Louise Ladefoged, Thoefner, Ida , Bisgaard, M., Olsen, Rikke Heidemann, Christensen, Jens Peter & Christensen, Henrik, 2017, In: Veterinary Microbiology. 212, p. 1-6 6 p.

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

    28. Published

      Longitudinal study of transmission of Escherichia coli from broiler breeders to broilers

      Poulsen, Louise Ladefoged, Thoefner, Ida , Bisgaard, M., Christensen, Jens Peter, Olsen, Rikke Heidemann & Christensen, Henrik, 2017, In: Veterinary Microbiology. 207, p. 13-18

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

    29. Published

      Characterization of Escherichia coli causing cellulitis in broilers

      Poulsen, Louise Ladefoged, Bisgaard, M., Jørgensen, S. L., Dideriksen, T., Pedersen, J. R. & Christensen, Henrik, 2018, In: Veterinary Microbiology. 225, p. 72-78 7 p.

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

    30. Published

      Whole genome sequence comparison of avian pathogenic Escherichia coli from acute and chronic salpingitis of egg laying hens

      Poulsen, Louise Ladefoged, Kudirkiene, E., Jørgensen, S. L., Djordjevic, S. P., Cummins, M. L., Christensen, Jens Peter, Christensen, Henrik, Bisgaard, M. & Thoefner, Ida , 2020, In: BMC Veterinary Research. 16, 1, 9 p., 148.

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

    31. Published

      Prevalence of Potential Pathogenic and Antimicrobial Resistant Escherichia coli in Danish Broilers

      Poulsen, Louise Ladefoged, Bisgaard, M. & Christensen, Henrik, 2023, In: Antibiotics. 12, 2, 344.

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

    32. Published

      Occurrence of haemolytic Mannheimia spp. in apparently healthy sheep in Norway

      Poulsen, L. L., Reinert, T. M., Sand, R. L., Bisgaard, M., Christensen, Henrik, Olsen, John Elmerdahl, Stuen, S. & Bojesen, Anders Miki, 2006, In: Acta Veterinaria Scandinavica (Print Edition). 48, 19, 7 p.

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

    33. Published

      Genetic diversity and associated pathology of Pasteurella multocida isolated from porcine pneumonia

      Pors, S. E., Hansen, Mette Sif, Christensen, Henrik, Jensen, Henrik Elvang, Petersen, A. H. H. & Bisgaard, M., 2011, In: Veterinary Microbiology. 150, 3-4, p. 354-361 8 p.

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

    34. 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

    35. 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

    36. 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

    37. 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

    38. 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

    39. 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

    40. 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

    41. 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

    42. 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

    43. 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

    44. 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

    45. 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

    46. 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

    47. 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

    48. 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

    49. 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

    50. 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

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