In a concerning first for Europe, highly pathogenic avian influenza (H5N5) has been detected in a dead polar bear on the remote Norwegian archipelago of Svalbard. The discovery, confirmed by the Norwegian Veterinary Institute in May 2026, marks the first known case of bird flu infecting a polar bear anywhere on the continent.
The young polar bear — approximately one year old — was found dead in Raudfjorden, a fjord in northern Svalbard, by local tour guides earlier in the month. Around the same time, a deceased adult walrus in the same area also tested positive for the H5N5 subtype. Both carcasses were sent for laboratory analysis, which confirmed the presence of the virus.
A Virus Already Present in Svalbard
While this is the first detection in a polar bear in Europe, the H5N5 subtype is not entirely new to Svalbard. The virus was first identified in wild seabirds on the archipelago in 2022. Since then, it has been found in a walrus in 2023 and in Arctic foxes in subsequent years. The jump to polar bears, however, represents a significant and worrying development for wildlife experts monitoring the spread of avian influenza across species.
The Governor of Svalbard confirmed the findings in an official statement, noting that the Norwegian Veterinary Institute had detected the virus in both animals. The discovery has raised questions about how far the virus can travel and which species it can infect in the fragile Arctic ecosystem.
Why This Matters for the Arctic
Svalbard is home to approximately 3,000 polar bears, making it one of the most important habitats for the species on Earth. The archipelago, located roughly halfway between mainland Norway and the North Pole, is a critical stronghold for Arctic wildlife. A widespread outbreak of bird flu among polar bears could have devastating consequences for an already vulnerable population facing the pressures of climate change and shrinking sea ice.
Scientists are now closely monitoring the situation, conducting additional testing on wildlife in the Raudfjorden area and beyond. Tour operators and researchers working in Svalbard have been advised to report any unusual wildlife deaths immediately.
The Bigger Picture
The detection of H5N5 in a Svalbard polar bear underscores the growing global reach of highly pathogenic avian influenza. Once confined primarily to domestic poultry, the virus has increasingly jumped to wild mammals in recent years, raising alarm among conservationists and public health officials worldwide.
For Svalbard — a place already on the front lines of climate change — the arrival of bird flu in its iconic polar bear population adds yet another layer of concern to the future of this extraordinary Arctic wilderness.
Sources: Reuters, Norwegian Veterinary Institute, Governor of Svalbard, BEACON