Ragnhild Tønnessen
Seniorrådgiver / Veterinær, Ph.D.
Faglig bakgrunn
Veterinær, Ph.D. i virologi (fugleinfluensa), folkehelsemikrobiolog (EUPHEM), epidemiolog i nasjonal influensaovervåking ved FHI (2014-). Erfaring innen forskning, diagnostikk, overvåking og beredskap.
Prosjekter og publikasjoner
- Tjede Funk, Francesco Innocenti, Joana Gomes Dias, Lina Nerlander, Tanya Melillo, Charmaine Gauci, Jackie M. Melillo, Patrik Lenz, Helena Sebestova, Pavel Slezak, Iva Vlckova, Jacob Dag Berild, Camilla Mauroy, Elina Marjukka Seppälä, Ragnhild Tønnessen, Anne Vergison, Joël Mossong, Silvana Masi, Laetitia Huiart, Gillian Cullen, Niamh Murphy, Lois O'Connor, Joan O'Donnell, Piers Mook, Richard G. Pebody, Nick Bundle, (2022). Age-specific associations between underlying health conditions and hospitalisation, death and in-hospital death among confirmed COVID-19 cases: a multi-country study based on surveillance data, June to December 2020. Eurosurveillance doi: 10.2807/1560-7917.ES.2022.27.35.2100883
- Ragnhild Tønnessen, Ignacio Garcia Llorente, Nadia Debech, Jonas Christoffer Lindstrøm, Astrid Louise Wester, Dagfinn Skaare, (2022). Molecular epidemiology and antibiotic resistance profiles of invasive Haemophilus influenzae from Norway 2017–2021. Frontiers in Microbiology s. 1-15. doi: 10.3389/fmicb.2022.973257
- Elina Marjukka Seppälä, Ragnhild Tønnessen, Lamprini Veneti, Trine Hessevik Paulsen, Anneke Steens, Robert Neil Whittaker, Karoline Bragstad, Jacob Dag Berild, Astrid Louise Løvlie, Mohammed Umaer Naseer, Emily Ann Macdonald, Line Vold, (2020). COVID-19 cases reported to the Norwegian Institute of Public Health in the first six weeks of the epidemic. Tidsskrift for Den norske legeforening doi: 10.4045/tidsskr.20.0525
- Robert Neil Whittaker, Mari Grøsland, Eirik Alnes Buanes, Sigrid Beitland, Bente Bryhn, Jon Helgeland, Olav Isak Rokstad Sjøflot, Jacob Dag Berild, Elina Marjukka Seppälä, Ragnhild Tønnessen, Kjetil Elias Telle, (2020). Sykehusinnleggelser med covid-19 ‒ en sammenligning av ulike datakilder. Tidsskrift for Den norske legeforening doi: 10.4045/tidsskr.20.0759
- Lasse S. Vestergaard, Jens Nielsen, Lukas Richter, Daniela Schmid, Natalia Bustos, Toon Braeye, Gleb Denissov, Tatjana Veideman, Oskari Luomala, Teemu Möttönen, Anne Fouillet, Céline Caserio-Schönemann, Matthias an der Heiden, Helmut Uphoff, Theodore Lytras, Kassiani Gkolfinopoulou, Anna Paldy, Lisa Domegan, Joan O’Donnell, Francesca de’ Donato, Fiammetta Noccioli, Patrick Hoffmann, Telma Velez, Kathleen England, Liselotte van Asten, Richard Aubrey White, Ragnhild Tønnessen, Susana P. da Silva, Ana Paula Rodrigues, Amparo Larrauri, Concepción Delgado-Sanz, Ahmed Farah, Ilias Galanis, Christoph Junker, Damir Perisa, Mary Sinnathamby, Nick Andrews, Mark O’Doherty, Diogo F.P. Marquess, Sharon Kennedy, Sonja J. Olsen, Richard Pebody, Tyra G. Krause, Kåre Mølbak, (2020). Excess all-cause mortality during the COVID-19 pandemic in Europe – preliminary pooled estimates from the EuroMOMO network, March to April 2020. Eurosurveillance s. 1-6. doi: 10.2807/1560-7917.ES.2020.25.26.2001214
- Jens C. Nielsen, Lasse Skafte Vestergaard, Lukas Richter, Daniela Schmid, Natalia Bustos, Tommi Asikainen, Ramona Trebbien, Gleb Denissov, Kaire Innos, Mikko J. Virtanen, Anne Fouillet, Theodore Lytras, Kassiani D. Gkolfinopoulou, Matthias an der Heiden, Linus Grabenhenrich, Helmut Uphoff, Anna Paldy, Janos Bobvos, Lisa Domegan, Joan M. O'Donnell, Matteo Scortichini, Annamaria de Martino, Joël Mossong, Kathleen England, Jackie Melillo, Liselotte van Asten, Marit M.A. de Lange, Ragnhild Tønnessen, Richard Aubrey White, Susana Pereira da Silva, Ana Paula Rodrigues, Amparo Larrauri, Clara Mazagatos, Ahmed Farah, Annasara Dahlborg Carnahan, Christoph Junker, Mary Sinnathamby, Richard G. Pebody, Nick Andrews, Arlene Reynolds, Jim McMenamin, Caroline S. Brown, Cornelia Adlhoch, Pasi Penttinen, Kåre Mølbak, Tyra Grove Krause, (2019). European all-cause excess and influenza-attributable mortality in the 2017/18 season: should the burden of influenza B be reconsidered?. Clinical Microbiology and Infection (CMI) doi: 10.1016/j.cmi.2019.02.011
- Lars Ole Grottenberg, Ove Njå, Erlend Tøssebro, Geir Sverre Braut, Ragnhild Tønnessen, Gry Marysol Grøneng, (2018). Detecting flu outbreaks based on spatiotemporal information from urban systems - designing a novel study. International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences s. 231-237. doi: 10.5194/isprs-archives-XLII-3-W4-231-2018
- L S Vestergaard, J Nielsen, T G Krause, Laura Espenhain, Katrien Tersago, Natalia Bustos Sierra, Gleb Denissov, Kaire Innos, Mikko J. Virtanen, Anne Fouillet, Theodore Lytras, Anna Paldy, Janos Bobvos, Lisa Domegan, Joan O'Donnell, Matteo Scortichini, Annamaria de Martino, Kathleen England, Neville Calleja, Liselotte van Asten, Anne C Teirlinck, Ragnhild Tønnessen, Richard Aubrey White, Susana P Silva, Ana P Rodrigues, Amparo Larrauri, Inmaculada Leon, Ahmed Farah, Christoph Junker, Mary Sinnathamby, Richard G Pebody, Arlene Reynolds, Jennifer Bishop, Diane Gross, Cornelia Adlhoch, Pasi Penttinen, Kåre Mølbak, (2017). Excess all-cause and influenza-attributable mortality in Europe, December 2016 to February 2017. Eurosurveillance doi: 10.2807/1560-7917.ES.2017.22.14.30506
- Helene Wisløff, Brit Sofie Nordvik, Ståle Sviland, Ragnhild Tønnessen, (2014). First documented clinical case of Schmallenberg virus in Norway: fetal malformations in a calf. The Veterinary Record doi: 10.1136/vr.102149
- Ragnhild Tønnessen, Anna Germundsson Hauge, Elisabeth Furuseth Hansen, Espen Rimstad, Christine M Jonassen, (2013). Host Restrictions of Avian Influenza Viruses: In Silico Analysis of H13 and H16 Specific Signatures in the Internal Proteins. PLOS ONE doi: 10.1371/journal.pone.0063270
- Ragnhild Tønnessen, Anja Bråthen Kristoffersen, Christine M Jonassen, Monica Jankowska Hjortaas, Elisabeth Furuseth Hansen, Espen Rimstad, Anna Germundsson Hauge, (2013). Molecular and epidemiological characterization of avian influenza viruses from gulls and dabbling ducks in Norway. Virology Journal doi: 10.1186/1743-422X-10-112
- Ragnhild Tønnessen, Kaja Sverdrup Borge, Ane Nødtvedt, Astrid Indrebø, (2012). Canine perinatal mortality: A cohort study of 224 breeds. Theriogenology s. 1788-1801. doi: 10.1016/j.theriogenology.2011.12.023
- Ragnhild Tønnessen, Mette Valheim, Espen Rimstad, Christine M Jonassen, Anna Germundsson, (2011). Experimental inoculation of chicken with gull-derived low pathogenic avian influenza virus subtype H16N3 causes limited infection. Avian diseases s. 680-685. doi: 10.1637/9701-030411-resnote.1
- Ragnhild Tønnessen, Anna Germundsson, Christine M Jonassen, Irene Haugen, Kristin Berg, Robert Barrett, Espen Rimstad, (2011). Virological and serological surveillance for type A influenza in the black-legged kittiwake (Rissa tridactyla). Virology Journal doi: 10.1186/1743-422X-8-21
- Kaja Sverdrup Borge, Ragnhild Tønnessen, Ane Nødtvedt, Astrid Indrebø, (2011). Litter size at birth in purebred dogs-A retrospective study of 224 breeds. Theriogenology s. 911-919. doi: 10.1016/j.theriogenology.2010.10.034
- Ragnhild Tønnessen, Astrid Lauscher, Espen Rimstad, (2009). Comparative aspects of infectious salmon anemia virus, an orthomyxovirus of fish, to influenza viruses. Indian Journal of Microbiology s. 308-314. doi: 10.1007/s12088-009-0055-4
- Karoline Bragstad, Trine Hessevik Paulsen, Elina Marjukka Seppälä, Ragnhild Tønnessen, Birgitte Klüwer, Kjersti Margrethe Rydland, Line Victoria Moen, Andreas Rohringer, Torstein Aune, Olav Hungnes, (2022). Influenza Virological and Epidemiological season report, October 2022
- Ragnhild Tønnessen, Trine Hessevik Paulsen, Solveig Jore, Nina Kristine Sorknes, Horst Bentele, Olav Hungnes, (2021). Vurdering av risiko for smitte til mennesker med høypatogen fugleinfluensa A(H5N8) i Norge 25.01.2021 – revidert 03.03.2021
- Karoline Bragstad, Trine Hessevik Paulsen, Ragnhild Tønnessen, Birgitte Klüwer, Kjersti Margrethe Rydland, Torstein Aune, Olav Hungnes, (2021). Influensasesongen i Norge 2020-2021 - årsrapport
- Karoline Bragstad, Trine Hessevik Paulsen, Ragnhild Tønnessen, Birgitte Klüwer, Kjersti Margrethe Rydland, Torstein Aune, Olav Hungnes, (2021). Influenza Virological and Epidemiological season report prepared for the WHO Consultation on the Composition of Influenza Virus Vaccines for the Southern Hemisphere 2022
- Karoline Bragstad, Trine Hessevik Paulsen, Ragnhild Tønnessen, Birgitte Klüwer, Kjersti Margrethe Rydland, Olav Hungnes, (2020). Norway National Influenza Centre: Influenza Virological and Epidemiological Information prepared for the WHO Consultation on the Composition of Influenza Virus Vaccines for the Northern Hemisphere 2019–2020 Geneva, February 2020
- Karoline Bragstad, Olav Hungnes, Trine Hessevik Paulsen, Ragnhild Tønnessen, Kjersti Margrethe Rydland, Birgitte Klüwer, Torstein Aune, Siri Helene Hauge, (2020). Influensasesongen i Norge 2019-2020
- Siri Helene Hauge, Hinta Meijerink, Benedikte Louise Alveberg, Are Stuwitz Berg, Anne Bergh, Karoline Bragstad, Birgitte Freiesleben De Blasio, Hanne-Merete Eriksen-Volle, Siri Laura Feruglio, Frode Forland, Gry Marysol Grøneng, Jørn Andreas Holme, Olav Hungnes, Bjørn Gunnar Iversen, Julie Denise Whittle Johansen, Knut Jønsrud, Emily Ann Macdonald, Karin Maria Nygård, Hanne Magdalene Nøkleby, Trine Hessevik Paulsen, Christina Lill Rolfheim-Bye, Kjersti Margrethe Rydland, Ragnhild Tønnessen, Kjetil Berg Veire, Line Vold, Richard Aubrey White, Torbjørn Wisløff, Britt Wolden, (2020). Urbanization and preparedness for outbreaks with high-impact respiratory pathogens
- Karoline Bragstad, Kristian Waalen, Trine Hessevik Paulsen, Ragnhild Tønnessen, Torstein Aune, Birgitte Klüwer, Kjersti Margrethe Rydland, Olav Hungnes, (2019). Norway National Influenza Centre: Influenza Virological and Epidemiological Information prepared for the WHO Consultation on the Composition of Influenza Virus Vaccines for the Northern Hemisphere 2019–2020 Beijing, February 2019
- Karoline Bragstad, Olav Hungnes, Trine Hessevik Paulsen, Ragnhild Tønnessen, Torstein Aune, Kristian Waalen, Kjersti Margrethe Rydland, Birgitte Klüwer, Siri Helene Hauge, (2019). Influensasesongen i Norge 2018-19.
- Karoline Bragstad, Trine Hessevik Paulsen, Ragnhild Tønnessen, Birgitte Klüwer, Kjersti Margrethe Rydland, (2019). Norway National Influenza Centre: Influenza Virological and Epidemiological Information prepared for the WHO Consultation on the Composition of Influenza Virus Vaccines for the Southern Hemisphere 2020. 2020 Geneva, September 2019
- Karoline Bragstad, Olav Hungnes, Kristian Waalen, Torstein Aune, Ragnhild Tønnessen, Kjersti Margrethe Rydland, Birgitte Klüwer, Siri Helene Hauge, (2018). Influensasesongen i Norge 2017-18. Årsrapport
- Karoline Bragstad, Kristian Waalen, Ragnhild Tønnessen, Trine Hessevik Paulsen, Torstein Aune, DAGNY HAUG DORENBERG, Remilyn Vicenta R. Ramos-Ocao, Siri Helene Hauge, Olav Hungnes, (2018). Norway: National Influenza Centre – Influenza Epidemiological Information prepared for the WHO Informal Meeting on Strain Composition for Inactivated Influenza Vaccines for use in the Season 2019. Atlanta, September 2018
- Olav Hungnes, Siri Helene Hauge, Kjersti Margrethe Rydland, Kristian Waalen, Anna Hayman Robertson, Ragnhild Tønnessen, Karoline Bragstad, Karine Nordstrand, Marianne Morken, Anne Maria Lund, Marie Paulsen Madsen, Remilyn Vicenta R. Ramos-Ocao, Valentina Morales Johansen, Torstein Aune, Gry Marysol Grøneng, Kirsten Konsmo, Tora Alexandra Ziesler Scharffenberg, Susanne Gjeruldsen Dudman, DAGNY HAUG DORENBERG, (2016). Influensasesongen i Norge 2015-16. Årsrapport
- Bernardo Rafael Guzmán Herrador, Thale Cathrine Berg, Jørgen Bjørnholt, Petter Elstrøm, Oliver Kacelnik, Georg Kapperud, Heidi Lange, Emily Ann Macdonald, Ragnhild Tønnessen, Line Vold, Karin Maria Nygård, (2015). Utbrudd av smittsomme sykdommer i Norge i 2014
- Siri Helene Hauge, Olav Hungnes, Kjersti Margrethe Rydland, Ragnhild Tønnessen, Fredrik Oftung, Siri Mjaaland, Lill Trogstad, Siri Eldevik Håberg, Kristian Waalen, Karoline Bragstad, Birgitte Freiesleben De Blasio, Anna Hayman Robertson, (2014). Influensasesongen i Norge 2013–14: årsrapport
- Tormod Mørk, Bjarne A Bergsjø, Inger Sofie Hamnes, Siv Klevar, Ragnhild Tønnessen, Helene Wisløff, Maria Stokstad, (2015). Korrekt prøvetaking ved smittsomme storfesjukdommer..
- Tormod Mørk, Bjarne A Bergsjø, Inger Sofie Hamnes, Siv Klevar, Ragnhild Tønnessen, Helene Wisløff, Maria Stokstad, (2013). Korrekt prøvetaking ved smittsomme storfesjukdommer.
- Ragnhild Tønnessen, Inger Sofie Hamnes, Tore Tollersrud, Ståle Sviland, Solfrid Åmdal, (2012). Schmallenbergvirus påvist i Sør-Norge. Fagaktuelt - Storfe. Norsk Veterinærtidsskrift
- Ragnhild Tønnessen, Anna Germundsson, Christine M Jonassen, Espen Rimstad, (2011). Hvilken betydning har influensavirus hos måker for fjørfæ?.