Author

Knut Madslien

Norwegian Veterinary InstituteORCID 0000-0002-2886-4949Unclaimed ORCID profile · follow to get notified of new preprints

Biology Disciplines

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Microbiology· 1 Molecular Biology· 1

Signature Assays, Organisms & Methods

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Approach:experimental assay· 2 Research Focus:differential expression· 1 Research Focus:ecology & biodiversity· 1 Research Focus:host-pathogen & immune response· 1 Assay:metagenomics· 1 Organism:plant (other)· 1

Frequent Co-Authors

Bjørnar YtrehusiD· 2 shared Britt GjersetiD· 2 shared Cathrine Arnason BøeiD· 2 shared Ragnhild TønnesseniD· 2 shared Andreas RohringeriD· 1 shared Børge MoeiD· 1 shared Egil Rønning· 1 shared Geir Wing GabrielseniD· 1 shared

Activity by Year

2026-2026 · peak 2/yr

Co-Author Collaboration Network

10 top collaborators · 40 mutual co-author links

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2 shared papersMicrobiology

Bjørnar YtrehusORCID

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2 papers

Recent·Most cited

Multiple Introductions of Highly Pathogenic Avian Influenza Viruses into the High Arctic: Svalbard and Jan Mayen, 2022 - 2025

Silje Granstad, Ragnhild Tønnessen, Bjørnar Ytrehus, Sébastien Descamps, Børge Moe, Hallvard Strøm, Geir Wing Gabrielsen, Sveinn Are Hanssen, Egil Rønning, Ole-Herman Tronerud, Maarten J. J. E. Loonen, Britt Gjerset, Hans Kristian Mjelde, Knut Madslien, Johan Åkerstedt, Cathrine Arnason Bøe

This study tracks the introduction and spread of HPAIVs in the High Arctic, identifying multiple genotypes and suggesting repeated introductions and local viral amplification.

Journal of General Virology · Aug 17, 2026Peer-reviewedMicrobiology

Highly Pathogenic Avian Influenza H5N5 in a Polar Bear and Atlantic Walrus, Svalbard, 2026, with Widespread Seroconversion in Polar Bears

Knut Madslien, Johanna Hol Fosse, Jon Aars, Cathrine Arnason Bøe, M Oerbaek Andersen, Kayla J. Buhler, Ingvild Fjeldheim, Britt Gjerset, Torild Jørgensen, Ida Kristin Myhrvold, Andreas Rohringer, Kjersti Sturød, Morten Tryland, Bjørnar Ytrehus, Ragnhild Tønnessen, Ingebjørg Helena Nymo

The paper reports the first confirmed case of HPAIV H5N5 in a polar bear and Atlantic walrus in Svalbard, with widespread seroconversion in polar bears following initial bird detections.

bioRxiv · Jul 20, 2026 · PreprintMolecular Biology