Avian Influenza Detected in Svalbard's Polar Bear and Walrus Populations

The Norwegian Veterinary Institute has confirmed the presence of highly pathogenic avian influenza virus (HsNs) in a polar bear and a walrus on Svalbard. This marks the first documented case of HsNs in polar bears in Europe.

Incident Overview

Last week, reports emerged of a deceased polar bear and walrus, along with two polar bears exhibiting hind leg paralysis, in Raudfjorden, north of Spitsbergen. Tourist guides in the area alerted the Norwegian Polar Institute, prompting the Governor of Svalbard to notify the Norwegian Food Safety Authority. The Veterinary Institute conducted field sampling, revealing HsNs in the brains of both deceased animals, suggesting the virus as the likely cause of death. No rabies virus was detected.

Implications for Wildlife and Human Health

While avian influenza viruses primarily affect birds, this case underscores the potential for cross-species transmission to mammals. The risk to humans is considered very low; however, authorities advise avoiding direct contact with sick or dead animals as a precaution. The public is encouraged to report any findings of dead animals or birds on Svalbard to the Governor via the "Report of dead animals and birds" form on their website.

Conservation and Monitoring Efforts

These findings highlight the need for ongoing monitoring of wildlife health in Arctic regions. The Norwegian authorities are likely to enhance surveillance and research efforts to understand the impact of avian influenza on vulnerable species like polar bears and walruses, ensuring the preservation of these iconic Arctic animals.