麻疹感染流感A病毒:一个被忽视的中间宿主?
Chris Ka Pun Mok1,2, Kun Qin3
1The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, SAR Hong Kong, China.
One health advances
|July 31, 2023
概括
在中国养殖的子经常感染禽流感和人类流感A病毒,并获得突变. 这凸显了它们作为新型流行病菌株的"混合容器"的潜在作用,需要加强监测.
科学领域:
- 兽医病毒学 兽医病毒学
- 动物传播疾病流行病学
- 公共卫生 公共卫生
背景情况:
- 禽流感A型病毒对公众健康构成持续威胁,有记录的动物性感染,如H5N1/6和H7N9.
- 最近在中国广泛感染养殖子的多种禽流感A病毒亚型,强调了它们的生态意义.
研究的目的:
- 调查在中国养殖的子作为流感A病毒的潜在储库或中间宿主的作用.
- 为了评估流行的流感病毒的遗传特征在子种群中循环.
- 评估新型流行病菌株在子中的产生风险.
主要方法:
- 血清学研究检测人类和禽流感A型病毒亚型感染在养殖子.
- 从子中分离出来的流感病毒的遗传测序和分析.
- 病毒遗传序列的比较,以确定哺乳动物适应性突变.
主要成果:
- 在中国的养殖子经常携带流行的人类 (H3N2,H1N1/pdm) 和禽类 (H7N9,H5N6,H9N2) A型流感病毒.
- 遗传分析显示,来自子的流感菌株具有哺乳动物适应性突变,而它们的鸟类对应物则不存在.
- 明克对各种流感A病毒亚型具有很高的易感性.
结论:
- 养殖鱼可能充当"混合容器",用于A型流感病毒的重新分类和演变,可能产生新的流行病菌株.
- 这些发现强调,迫切需要加强对子群体流感病毒的监测,以提前警告大流行.
- 明克作为新兴病原体的中间宿主,类似于SARS-CoV-2,需要进一步调查.
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