• Identifying climate-sensitive infectious diseases in animals and humans in Northern regions 

      Omazic, Anna; Bylund, Helena; Boqvist, Sofia; Hogberg, Anne-Marie; Björkman, Camilla; Tryland, Morten; Evengård, Birgitta; Koch, Anders; Berggren, C.; Malogolovkin, A; Kolbasov, D; Pavelko, N; Thierfelder, Tomas; Albihn, Ann (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-14)
      <i>Background</i> - General knowledge on climate change effects and adaptation strategies has increased significantly in recent years. However, there is still a substantial information gap regarding the influence of climate change on infectious diseases and how these diseases should be identified. From a One Health perspective, zoonotic infections are of particular concern. The climate in Northern ...
    • In vitro host range, multiplication and virion forms of recombinant viruses obtained from co-infection in vitro with a vaccinia-vectored influenza vaccine and a naturally occurring cowpox virus isolate 

      Tryland, Morten; Okeke, Malachy Ifeanyi; Nilssen, Øivind; Moens, Ugo; Traavik, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2009-05-12)
      Background: Poxvirus-vectored vaccines against infectious diseases and cancer are currently under development. We hypothesized that the extensive use of poxvirus-vectored vaccine in future might result in co-infection and recombination between the vaccine virus and naturally occurring poxviruses, resulting in hybrid viruses with unpredictable characteristics. Previously, we confirmed that ...
    • Infectious Disease Outbreak Associated with Supplementary Feeding of Semi-Domesticated Reindeer 

      Tryland, Morten; Nymo, Ingebjørg Helena; Sanchez Romano, Javier; Mørk, Torill; Klein, Joern; Rockström, Ulrika (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-18)
      Supplementary winter feeding of semi-domesticated reindeer (<i>Rangifer tarandus tarandus</i>) has become more common in Sweden and Norway due to reindeer pasture fragmentation and climatic conditions. With increased corralling and feeding, often associated with animal stress, increased animal-to-animal contact, and poor hygienic conditions, an altered range of health challenges and diseases may ...
    • Infectious keratoconjunctivitis in semi-domesticated Eurasian tundra reindeer (Rangifer tarandus tarandus): Microbiological study of clinically affected and unaffected animals with special reference to cervid herpesvirus 2 

      Sanchez Romano, Javier; Mørk, Torill; Laaksonen, Sauli; Ågren, Erik; Nymo, Ingebjørg Helena; Sunde, Marianne; Tryland, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-16)
      Background<br> Infectious keratoconjunctivitis (IKC) is one of the most common ocular diseases in ruminants worldwide. In addition to keratitis and conjunctivitis, animals with IKC can develop uveitis, corneal ulcer, and in severe cases, blindness. The bacteria Moraxella spp. has been described as the primary causative agent of infectious bovine keratoconjunctivitis (IBK) in cattle (Bos taurus), ...
    • Infectious keratoconjunctivitis in semi-domesticated reindeer (Rangifer tarandus tarandus): a questionnaire-based study among reindeer herders in Norway and Sweden 

      Wallin Philippot, Karin; Baron, Jerome; Sánchez Romano, Javier; Rautiainen, Heidi; Frössling, Jenny; Nymo, Ingebjørg Helena; Persson, Ylva; Omazic, Anna; Tryland, Morten (Journal article; Tidsskriftartikkel, 2023-07-12)
      Background - The effects of climate change, loss of pastureland to other land usage and presence of large carnivores are the main reasons for the increase in supplementary feeding of semi-domesticated reindeer (Rangifer tarandus tarandus) in Fennoscandia over the last decades. Feeding might expose reindeer to stress and increased animal-to-animal contact, leading to an increased risk of infectious ...
    • Inkoo and Sindbis viruses in blood sucking insects, and a serological study for Inkoo virus in semi-domesticated Eurasian tundra reindeer in Norway 

      Shakya, Ruchika; Tryland, Morten; Vikse, Rose; Romano, Javier Sánchez; Åsbakk, Kjetil; Nymo, Ingebjørg Helena; Mehl, Reidar Arne; Evander, Magnus; Ahlm, Clas; Vapalahti, Olli; Lwande, Olivia Wesula; Putkuri, Niina; Johansen, Wenche; Soleng, Arnulf; Edgar, Kristin Skarsfjord; Andreassen, Åshild Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-03)
      Background: Mosquito-borne viruses pose a serious threat to humans worldwide. There has been an upsurge in the number of mosquito-borne viruses in Europe, mostly belonging to the families Togaviridae, genus Alphavirus (Sindbis, Chikungunya), Flaviviridae (West Nile, Usutu, Dengue), and Peribunyaviridae, genus Orthobunyavirus, California serogroup (Inkoo, Batai, Tahyna). The principal focus of this ...
    • Kvalitetskrav for vann til jordvanning. Uttalelse fra Faggruppen for hygiene og smittestoffer i Vitenskapskomiteen for mattrygghet 

      Eckner, Karl Fredrich; Lunestad, Bjørn-Tore; Robertson, Lucy; Holene, Edel; Rivedal, Edgar; Kapperud, Georg; Nygård, Karin Maria; Nesbakken, Truls; Tranulis, Michael A.; Tryland, Morten; Yazdankhah, Siamak Pour; Lassen, Jørgen (Research report; Forskningsrapport, 2014-05-07)
      Ved vanning av spiselige jordbruksvekster på friland i Norge brukes det overflatevann, grunnvann eller vann fra gravd brønn. Vannet kan være offentlig eller privat. Mikroorganismer og uønskede kjemiske stoffer i slikt vann kan forårsake sykdom, dersom dette benyttes til vanning av vegetabiler. For sykdomsfremkallende mikroorganismer gjelder dette spesielt ved vanning av vegetabiler som skal spises ...
    • Metagenomic Survey for Viruses in Western Arctic Caribou, Alaska, through Iterative Assembly of Taxonomic Units 

      Schürch, Anita; Schipper, Debby; Bijl, Maarten; Dau, Jim; Beckmen, Kimberly; Schapendonk, Claudia M.E.; Raj, Stalin; Osterhaus, Albert D.M. E.; Haagmans, Bart L.; Tryland, Morten; Smits, Saskia L (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Molecular characterization and phylogenetics of Fennoscandian cowpox virus isolates based on the p4c and atip genes 

      Okeke, Malachy Ifeanyi; Okoli, Arinze Stanley; Nilssen, Øivind; Moens, Ugo; Tryland, Morten; Bøhn, Thomas; Traavik, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Background: Cowpox virus (CPXV), a rodent-borne Orthopoxvirus (OPV) that is indigenous to Eurasia can infect humans, cattle, felidae and other animals. Molecular characterization of CPXVs isolated from different geographic locations is important for the understanding of their biology, geographic distribution, classification and evolution. Our aim was to characterize CPXVs isolated from Fennoscandia ...
    • A Multi-Pathogen Screening of Captive Reindeer (Rangifer tarandus) in Germany Based on Serological and Molecular Assays 

      Sanchez Romano, Javier; Grund, Lisa; Obiegala, Anna; Nymo, Ingebjørg Helena; Ancin-Murguzur, Francisco Javier; Li, Hong; Król, Nina; Pfeffer, Martin; Tryland, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-20)
      Captive reindeer in German zoos and wildlife parks live outside their natural geographic range and are exposed to a variety of viral, bacterial and protozoan pathogens, some host-specific and some which they are not exposed to in their native habitat. Reindeer blood samples and ticks collected in 2013 from 123 reindeer at 16 different zoological facilities were available from a previous study. The ...
    • Multi-pathogen serological survey of migratory caribou herds: A snapshot in time 

      Carlsson, Anja M.; Curry, Patricia S.; Elkin, Brett T.; Russell, Donald E.; Veitch, Alasdair M.; Branigan, Marsha; Campbell, Mitch; Croft, Bruno; Cuyler, Christine; Côté, Steeve D.; Leclerc, Lise-Marie; Tryland, Morten; Nymo, Ingebjørg Helena; Kutz, Susan J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-31)
      Pathogens can impact host survival, fecundity, and population dynamics even when no obvious disease is observed. Few baseline data on pathogen prevalence and diversity of caribou are available, which hampers our ability to track changes over time and evaluate impacts on caribou health. Archived blood samples collected from ten migratory caribou herds in Canada and two in Greenland were used to test ...
    • Ocular Histopathological Findings in Semi-Domesticated Eurasian Tundra Reindeer (Rangifer tarandus tarandus) with Infectious Keratoconjunctivitis after Experimental Inoculation with Cervid Herpesvirus 2 

      Sanchez Romano, Javier; Sørensen, Karen Kristine; Larsen, Anett Kristin; Mørk, Torill; Tryland, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-09)
      Infectious keratoconjunctivitis (IKC) is a common transmissible ocular disease in semi-domesticated Eurasian tundra reindeer (<i>Rangifer tarandus tarandus</i>). In large outbreaks, IKC may affect tens of animals in a herd, with the most severe cases often requiring euthanasia due to the destruction of the affected eyes and permanent blindness. An experimental inoculation with cervid herpesvirus 2 ...
    • Orf virus infection in Alaskan mountain goats, Dall’s sheep, muskoxen, caribou and Sitka black-tailed deer 

      Tryland, Morten; Beckmen, Kimberlee B.; Burek-Huntington, Kathleen; Breines, Eva Marie; Klein, Joern (Journal article; Tidsskriftartikkel, 2018-02-21)
      Background: <br>The zoonotic Orf virus (ORFV; genus Parapoxvirus, Poxviridae family) occurs worldwide and is transmit‑ted between sheep and goats, wildlife and man. Archived tissue samples from 16 Alaskan wildlife cases, representing mountain goat (Oreamnos americanus, n= 8), Dall’s sheep (Ovis dalli dalli, n= 3), muskox (Ovibos moschatus, n= 3), Sitka black‑tailed deer (Odocoileus hemionus sitkensis, ...
    • Orthopoxvirus DNA in Eurasian Lynx, Sweden 

      Tryland, Morten; Okeke, Malachy Ifeanyi; Hård af Segerstad, Carl; Mörner, Torsten; Traavik, Ingemar Terje; Ryser-Degiorgis, Marie-Pierre (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Cowpox virus, which has been used to protect humans against smallpox but may cause severe disease in immunocompromised persons, has reemerged in humans, domestic cats, and other animal species in Europe. Orthopoxvirus (OPV) DNA was detected in tissues (lung, kidney, spleen) in 24 (9%) of 263 free-ranging Eurasian lynx (Lynx lynx) from Sweden. Thymidine kinase gene amplicon sequences (339 bp) from ...
    • Pathogen Exposure in White Whales (Delphinapterus leucas) in Svalbard, Norway 

      Nymo, Ingebjørg Helena; Siebert, Ursula; Baechlein, Christine; Postel, Alexander; Breines, Eva Marie; Lydersen, Christian; Kovacs, Kit M.; Tryland, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-29)
      The Svalbard white whale (Delphinapterus leucas) population is one of the smallest in the world, making it particularly vulnerable to challenges such as climate change and pathogens. In this study, serum samples from live captured (2001-2016) white whales from this region were investigated for influenza A virus (IAV) antibodies (Abs) (n = 27) and RNA (n = 25); morbillivirus (MV) Abs (n = 3) and RNA ...
    • Pathogen surveillance in Southern Ocean pinnipeds 

      Núñez-Egido, Sandra; Lowther, Andrew; Nymo, Ingebørg H.; Klein, Jörn; Breines, Eva Marie; Tryland, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-17)
      Knowledge of the health status and potential effect of disease outbreaks among Southern Ocean fauna may be decisive for its conservation. We assessed the exposure and infection of Antarctic fur seals (<i>Arctocephalus gazella</i>, AFS) and Southern elephant seals (<i>Mirounga leonine</i>, SES) to parapoxvirus, <i>Phocid alphaherpesvirus-1</i> (PhHV-1), smooth <i>Brucella</i> spp. and <i>Toxoplasma ...
    • Pestivirus Infections in Semi-Domesticated Eurasian Tundra Reindeer (Rangifer tarandus tarandus): A Retrospective Cross-Sectional Serological Study in Finnmark County, Norway. 

      Neves, Carlos Gonzalo das; Johansson Wensman, Jonas; Nymo, Ingebjørg Helena; Skjerve, Eystein; Alenius, Stefan; Tryland, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-26)
      Members of the Pestivirus genus (family <i>Flaviviridae</i>) cause severe and economically important diseases in livestock. Serological studies have revealed the presence of pestiviruses in different cervid species, including wild and semi-domesticated Eurasian tundra reindeer. In this retrospective study, serum samples collected between 2006 and 2008 from 3339 semi-domesticated Eurasian reindeer ...
    • Plasmid-associated antimicrobial resistance and virulence genes in Escherichia coli in a high arctic reindeer subspecies 

      Sunde, Marianne; Ramstad, Silje N.; Rudi, Knut; Porcellato, Davide; Ravi, Anuradha; Ludvigsen, Jane; das Neves, Carlos Gonçalo; Tryland, Morten; Ropstad, Erik; Slettemeås, Jannice S.; Telke, Amar A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-30)
      Objectives - In extreme environments, such as the Arctic region, the anthropogenic influence is low and the presence of antimicrobial-resistant bacteria is unexpected. In this study, we screened wild reindeer (Rangifer tarandus platyrhynchus) from the Svalbard High Arctic Archipelago for antimicrobial-resistant Escherichia coli and performed in-depth strain characterisation.<p> <p>Methods - Using ...
    • Prevalence of antibodies against Brucella spp. in West Greenland polar bears (Ursus maritimus) and East Greenland muskoxen (Ovibos moschatus) 

      Sonne, Christian; Andersen-Ranberg, Emilie; Rajala, Elisabeth; Agerholm, Jørgen S.; Bonefeld-Jørgensen, Eva; Desforges, Jean-Pierre; Eulaers, Igor; Gustavson, Kim; Jenssen, Bjørn Munro; Koch, Anders; Rosing-Asvid, Aqqalu; Schmidt, Nils Martin; Grøndahl, Carsten; Mosbacher, Jesper Bruun; Siebert, Ursula; Tryland, Morten; Mulvad, Gert; Born, Erik W; Laidre, Kristin; Wiig, Øystein; Dietz, Rune; Magnusson, Ulf (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-19)
      Zoonotic infections transmitted from terrestrial and marine mammals to humans in European Arctic are of unknown significance, despite considerable potential for transmission due to local hunt and a rapidly changing environment. As an example, infection with <i>Brucella</i> bacteria may have significant impact on human health due to consumption of raw meat or otherwise contact with tissues and fluids ...
    • Rabies hos flaggermus. En oversiktsrapport. Revidert utgave av NINA Rapport 76 

      Hansen, Trond Willa; Mørk, Torill; Tryland, Morten; Arnemo, Jon M.; Isaksen, Kjell; van der Kooij, Jeroen; Andersen, Reidar (Research report; Forskningsrapport, 2007-07)
      Rabies hos flaggermus er utbredt over store deler av verden og er også registrert i mange områder i Europa. Fjorten av Europas rundt 40 arter er rapportert å ha vært eksponert for rabiesvirus enten ved påvisning av viruset eller ved funn av antistoffer i blod. Rabiesvirus som forekommer hos flaggermus i Europa kalles European Bat Lyssavirus (EBLV) og finnes i to varianter, EBLV1 og EBLV2 (også kalt ...