The role of wild birds in the spread of HPAI H5N1
The role of wild birds in the spread of HPAI H5N1
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DOI：
10.1637/7575-040106r1.1
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发表时间：
2007-01-01
期刊：
影响因子：
1.4
通讯作者：
Feare, Chris J.
中科院分区：
文献类型：
--
作者：
Feare, Chris J.
关于家禽流动和野鸟流动在高致病性禽流感H5N1传播中的相对作用，存在很多争论。这篇文章从鸟类学的角度来看待这个问题。野鸟中的暴发与野鸟可能参与病毒传播的三种情况有关。这些情景分别为1997年开始的爆发的五个阶段进行了审查，最近在病毒传播方面变得更加活跃。大多数野鸟的暴发似乎反映了当地从污染源获得感染，然后在附近迅速死亡。2006年初在欧洲爆发的疫情表明，该病毒可以通过野鸟进一步传播，因此它们可以被感染并在死亡前传播不同的距离，并可能在死亡前将感染传播给其他野鸟。只有有限的证据表明，一些野鸟可以无症状地携带病毒，野鸟疫情也没有证据表明它们在季节性迁徙路线上长距离携带病毒。其他潜在的感染源和野生鸟类无症状感染的证据进行了讨论，并强调需要更多的鸟类输入高致病性禽流感H5N1的流行病学研究。
There is much debate about the relative roles of poultry movements and wild bird movements in the spread of highly pathogenic avian influenza H5N1. This article looks at the problem from an ornithologic perspective. Outbreaks in wild birds are examined in relation to three scenarios of possible wild bird involvement in virus transmission. These scenarios are examined separately for five phases of the outbreak that began in 1997 and which has recently become more dynamic in terms of virus spread. Most outbreaks in wild birds seem to reflect local acquisition of infection from a contaminated source, followed by rapid death nearby. Outbreaks in Europe in early 2006 indicate that the virus can be spread further by wild birds and thus that they can become infected and travel varying distances before dying, and probably passing the infection to other wild birds before death. There is only limited evidence that some wild birds can carry the virus asymptomatically, and no evidence from wild bird outbreaks that they have done so over long distances on seasonal migration routes. Other potential sources of infection and evidence for asymptomatic infection in wild birds are discussed, and the need for more ornithologic input into epidemiological studies of HPAI H5N1 is highlighted.