人们担心高度致病性禽流感会蔓延到鱼身上
Teresa Pérez-Sánchez1,2, José Carlos Báez1,3, Carolina Johnstone1
1Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, Consejo Superior de Investigaciones Científicas (IEO-CSIC), 29002 Málaga, Spain.
Viruses
|December 31, 2025
概括
高致病性禽流感H5N1对海洋哺乳动物构成风险. 虽然H5N1从海鸟传播到鱼,但目前的数据不支持海洋哺乳动物之间的持续传播.
科学领域:
- 兽医病毒学 兽医病毒学
- 海洋哺乳动物健康
- 野生动物疾病生态学 野生动物疾病生态学
背景情况:
- 流感A型病毒 (IAV) 感染多种宿主,造成大流行风险.
- 禽流感的H5N1亚型目前正在引起泛动物性疫情,影响全球野生动物.
- 环境变化促进HPAI H5N1的传播,导致溢出事件进入海洋生态系统.
研究的目的:
- 调查甲型流感病毒 (IAV) 在鱼中感染的发生和特征.
- 分析与哺乳动物适应性相关的病毒遗传标记物,在类动物的H5N1分离物中.
- 评估H5N1在海鸟,海洋哺乳动物和鱼之间传播的动态.
主要方法:
- 在21个H5N1鱼分离物中分析分子标记物.
- 血凝素 (HA) 和聚合酶基本蛋白2 (PB2) 序列的遗传学分析.
- 从鱼,海鸟和其他海洋哺乳动物的病毒序列的比较.
主要成果:
- 与哺乳动物适应相关的突变在H5N1鱼分离的HA,PB2和NP病毒蛋白中被确定.
- 遗传学分析没有支持类动物中持续的H5N1传播.
- 有证据表明,H5N1从海鸟和潜在的其他海洋哺乳动物传播到类动物.
结论:
- 鱼对HPAI H5N1敏感,有证据表明病毒适应了海洋哺乳动物.
- 目前的数据并不表明H5N1在鱼种群中有效或持续传播.
- 加强对鱼IAV的全球监测对于疫情防控和海洋生态系统健康至关重要.
关键词:
海豚 海豚是什么意思宿主适应 宿主适应海洋动物大流行病海洋哺乳动物海洋哺乳动物鱼海豚 (porpoise) 是一种海豚类动物.病毒传播 病毒传播 病毒传播鱼是什么意思 鱼是什么意思动物传染病风险动物传染病风险更多相关视频
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