Scholarlink

<p>High pathogenicity avian influenza virus H5N1 subtype (H5N1 HPAIV), clade 2.3.4.4b, is expanding its host and geographical range, and invaded Antarctica in 2023. Although mortality in Antarctic wildlife from H5N1 HPAIV has been suspected, mainly based on virological analysis of swabs collected from dead animals, it has not been unequivocally diagnosed. Here we show that H5N1 HPAIV caused high mortality in a breeding colony of skuas at one of ten sites in Antarctica we visited in March 2024. By combined virological, bacteriological and pathological analyses, we found that H5N1 HPAIV caused multi-organ necrosis and rapid death in skuas, but not in other species examined. Taken together with recent data, skuas in Antarctica are at risk of continued mortality from H5N1 HPAIV infection, threatening their already small populations. Conversely, because of their wide distribution and ecological relevance, skuas may play a substantial role in the spread of the virus across Antarctica. Transdisciplinary surveillance is needed in coming years to monitor the impact of this poultry-origin disease on Antarctica’s unique wildlife.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The expanding H5N1 avian influenza panzootic causes high mortality of skuas in Antarctica

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月14日

查看全文
  • Matteo Iervolino,
  • Anne Günther,
  • Lineke Begeman,
  • Begoña Aguado,
  • Theo M. Bestebroer,
  • Beatriz Bellido-Martin,
  • Adam Coerper,
  • M. Valentina Fornillo,
  • Bruno Fusaro,
  • Andrés E. Ibañez,
  • Lonneke Leijten,
  • Simeon Lisovski,
  • Mariané B. Mañez,
  • Alice Reade,
  • Peter van Run,
  • Florencia Soto,
  • Ben Wallis,
  • Meagan Dewar,
  • Antonio Alcamí,
  • Martin Beer,
  • Ralph E. T. Vanstreels,
  • Thijs Kuiken

摘要

High pathogenicity avian influenza virus H5N1 subtype (H5N1 HPAIV), clade 2.3.4.4b, is expanding its host and geographical range, and invaded Antarctica in 2023. Although mortality in Antarctic wildlife from H5N1 HPAIV has been suspected, mainly based on virological analysis of swabs collected from dead animals, it has not been unequivocally diagnosed. Here we show that H5N1 HPAIV caused high mortality in a breeding colony of skuas at one of ten sites in Antarctica we visited in March 2024. By combined virological, bacteriological and pathological analyses, we found that H5N1 HPAIV caused multi-organ necrosis and rapid death in skuas, but not in other species examined. Taken together with recent data, skuas in Antarctica are at risk of continued mortality from H5N1 HPAIV infection, threatening their already small populations. Conversely, because of their wide distribution and ecological relevance, skuas may play a substantial role in the spread of the virus across Antarctica. Transdisciplinary surveillance is needed in coming years to monitor the impact of this poultry-origin disease on Antarctica’s unique wildlife.