Ragnhild Tønnessen

Sheep transmit high loads of H5N1 and H5N5 influenza viruses through their milk—and, by suckling, lambs can spread infection to other udders—according to a new study. scim.ag/4ncEE1I

Eurosurveillance: Highly pathogenic avian influenza A(H5N1) in poultry and domestic cats and occupational exposure among veterinary and other first responders, Germany, February 2026 🇩🇪 Aparna Dressler et al @Eurosurveillanc #h5n1 bit.ly/4tIMVwL

Mattilsynet: Mattilsynet opphever sone med tiltak for fjørfehold i Rogaland fra og med 1. mai kommunikasjon.ntb.no/pressemelding/…

H5N1 leaves lasting marks: altered iris pigmentation in Northern Gannets is strongly linked to prior infection. Potential field marker for past exposure and chronic sequelae in wild birds. 🔗 doi.org/10.64898/2026.…

The recent spread of foot and mouth disease (serotype SAT 1) beyond its historical African range, in previously disease-free countries, including those in Southern Africa, Asia, Europe, and the Middle East, is concerning. It underscores how quickly animal disease can cross borders even in regions that have been historically disease free. Early detection, transparent reporting and strong Veterinary Services remain our best defence. Investing in surveillance, diagnostics and vaccination is key to reducing future risks and protecting livelihoods. Read our full statement: woah.org/en/woah-calls-…

The health of humans, animals and the environment are woven together inextricably. We cannot protect one without protecting all three. This demands a One Health approach. That’s why @WHO, @FAO and @WOAH formed the tripartite in 2010, which became the Quadripartite in 2022 when @UNEP joined. At the One Health summit today, I was pleased to announce that we are extending the term of the One Health High-Level Expert Panel (OHHLEP) until April 2027. Thank you President @EmmanuelMacron and the Government of France for convening the summit. who.int/news/item/07-0…

2 years ago now the world learned US dairy cows were being infected with #H5N1 #birdflu, raising concern the virus would find a new route to move from animals to humans. Cow infections seem to have slowed & many questions remain, @sciencecohen reports. science.org/content/articl…

Italy has confirmed the first European human H9N2 avian flu case. About 90% of human H9N2 avian flu cases have been reported in China, with detections in Cambodia, Vietnam, and India, as well. Read more: ow.ly/cpnC50YyTju

Det har vært mye fugleinfluensa hos villfugl i vinter. Selv om dette nå ser ut til å avta, har det likevel vært nye påvisninger av H5N1 hos svaner i Rogaland og Agder i mars 🦢🦠. Ny statusrapport publisert fra Veterinærinstituttet i dag: vetinst.no/nyheter/framle…

«Detections of highly pathogenic avian influenza (HPAI) in birds in Europe have started to decline, following an autumn and winter period in which HPAI circulation in waterfowl reached its highest level in five years»efsa.europa.eu/en/news/avian-…

#H5N1 ➡️🇬🇧 UK: Bird flu vaccine trials 'momentous' for farmers - “I think this is one step for poultry, but one giant step for poultry kind” By Alex Dunlop & Neve Gordon-Farleigh bbc.com/news/articles/…

High pathogenicity avian influenza (HPAI) is causing unprecedented wildlife mortality, threatening species already under pressure. Prioritizing conservation efforts and habitat protection is key to reducing risks and impacts. 🔗bit.ly/3F4T1Dd

#H5N1 ➡️ Battling bird flu – Friedrich Loeffler Institute’s 20-year report poultryworld.net/health-nutriti…

Important day for #Influenza x.com/WHO/status/202…

The @WHO Influenza Vaccine Composition Meeting report is now available ⬇️ who.int/teams/global-i…

UC Davis: First Cases of Highly Pathogenic Avian Influenza in Northern Elephant Seals Confirmed in California #h5n1 @ucdavis bit.ly/4r2FrCH

Multiple Introductions of Highly Pathogenic Avian Influenza Viruses into the High Arctic: Svalbard and Jan Mayen, 2022 - 2025 biorxiv.org/content/10.648… #biorxiv_micrbio

Peer reviewed version of our article just published: onlinelibrary.wiley.com/doi/10.1155/tb…

Bird flu antibodies found in cow in the Netherlands, a first outside of U.S. Dead cat led to discovery, but officials stress no further spread of H5N1 has been detected. Bird flu science.org/content/articl…

AFD Blog `USDA APHIS Reports Wisconsin Dairy Herd Infected With Genotype D1.1' #H5N1 afludiary.blogspot.com/2025/12/usda-a…