Do migratory birds spread highly pathogenic avian influenza viruses?
候鸟是否传播高致病性禽流感病毒？
Avian influenza viruses become more active when temperatures turn cooler.
禽流感病毒在气温转为凉爽时变得更为活跃。
On rare occasions, avian influenza viruses have crossed the species barrier to infect humans.
在极少数情况下，禽流感病毒已跨越物种屏障，感染人类。
This article reviews the progress made in the study on avian influenza viruses during 2004 and 2005.
本文针对2004年爆发的禽流感疫病，回顾了2004年至2005年期间禽流感病毒的研究进展。
Most avian influenza viruses do not infect humans; however some, such as H5N1, have caused serious infections in people.
绝大多数禽流感病毒不会感染人类；但H5N1等某些病毒却造成严重的人间感染。
It is possible that there could be two separate avian influenza viruses, one containing H5 and the other containing N1.
也有可能这个样本被两种禽流感病毒感染，其中一种为H5亚型，另一种为N1亚型。
Avian influenza viruses are highly species-specific, but have, on rare occasions, crossed the species barrier to infect humans.
禽流感病毒具有高度物种特异性，但偶尔也跨越物种屏障，感染人类。
Although natural hosts are birds, the avian influenza viruses are known to cross species barriers to infect other mammals, including humans.
尽管鸟类是自然宿主，但禽流感病毒能够跨物种感染其它哺乳动物包括人类。
In domestic poultry, infection with avian influenza viruses causes two main forms of disease, distinguished by low and high extremes of virulence.
在家禽中，感染禽流感病毒导致两种主要疾病形式，区别为低致病性和高致病性。
The National Health and Family Planning Commission indicated that these H7N9 Avian Influenza viruses are a newly-discovered subtype of the influenza virus.
国家卫计委表示，此次人感染的H7N9禽流感病毒，是全球首次发现的新亚型流感病毒。
Of all avian influenza viruses known to infect humans, H5N1 has caused the greatest number of cases of very severe disease and the largest number of deaths.
在已知感染人类的所有禽流感病毒中，H5N1造成的重症病例最多，死亡人数也最多。
All evidence to date suggests that isolated instances of limited, unsustained human-to-human transmission can be expected from avian influenza viruses in humans.
迄今为止，所有证据表明，可预期人间禽流感病毒有限、非持续人际传播的孤立事例。
H5N1 appears to have expanded its host range, infecting and killing mammalian species previously considered resistant to infection with avian influenza viruses.
H5N1病毒似乎扩大了宿主范围，导致以往被视为对禽流感病毒具有抵抗力的哺乳类动物的感染和死亡。
WHO therefore recommends, for certain avian influenza viruses, a series of protective measures aimed at preventing human infections in persons at high risk of exposure.
因此，世卫组织针对某些禽流感病毒，建议采取一系列保护性措施，旨在预防在高危人群中出现人类感染。
Of the few avian influenza viruses that have crossed the species barrier to infect humans, H5N1 has caused the largest number of cases of severe disease and death in humans.
在跨越物种屏障感染人类的若干禽流感病毒中，H5N1导致的人类重症病例和死亡数目最多。
H9N2 subtype avian influenza viruses (AIV) have widely spreaded in the world. It has made not only huge economic losses for poultry industries but damage for human being's health.
H9N2亚型禽流感病毒在全世界范围内广泛流行，不仅给养禽业造成了巨大的经济损失，而且对人类健康造成威胁。
The study, which offers new insights into ecology, surveillance and prevention strategies of avian influenza viruses (AIVs), may ultimately be important in the fight against influenza.
这项研究为生态学，监控和预防禽流感策略提供了新的视野，可能最终对与流感的斗争起到重要的作用。
Multiple-function water and wastewater treatment, a world AA invention award winner, is able to apply to various fields relating to water and wastewater, killing all avian influenza viruses.
获得世界AA级发明的多用途水处理产品可应用于与水相关的各种领域，能完全杀灭禽流感病毒。
Though rare, instances of limited human-to-human transmission of H5N1 and other avian influenza viruses have occurred in association with outbreaks in poultry and should not be a cause for alarm.
虽然数量很少，H5N1和其它禽流感病毒在人与人之间的有限传播事例毕竟伴随家禽疫情发生了，但这无须惊慌。
In addition to H5N1, other animal influenza virus subtypes reported to have infected people include avian H7 and H9, and swine H1 and H3 viruses.
除h5n1之外，其他已报告能够感染人类的动物流感病毒亚型包括H 7、H9禽流感病毒和H 1、H 3猪流感病毒。
Avian influenza, or "bird flu", is a contagious disease of animals caused by viruses that normally infect only birds and, less commonly, pigs.
禽流感为病毒诱发的动物传染病，通常仅感染鸟类，偶尔感染猪。
Research on influenza pandemics and pandemic viruses increased considerably following the first human cases of infection with the H5N1 avian influenza virus in 1997.
在1997年发现首批人患H5N1禽流感病毒感染病例之后，大大加强了对流感大流行和大流行性病毒的研究力度。
To date, most human cases of avian influenza have been caused by viruses of the H5 and H7 subtypes.
到目前为止，大多数禽流感人间病例是由H5和H7亚型病毒造成。
A new study predicts that swapping genes between the avian and human influenza viruses may result in an even more dangerous flu.
一项新的研究预测，禽和人的流感病毒之间交换基因，可能产生更危险的流感病毒。
A new study predicts that swapping genes between the avian and human influenza viruses may result in an even more dangerous flu.
一项新的研究预测，在禽流感与人流感病毒之间交换基因可能会导致一种更为危险的流感。
Highly pathogenic avian H5N1 influenza viruses are now widespread in poultry in Asia and have recently spread to some African and European countries.
高致病性禽流感H5N 1流感病毒是现在广泛在家禽在亚洲，最近已蔓延到非洲和欧洲一些国家。
Avian influenza is caused by influenza viruses adapted for infection in birds. Similarly, swine influenza is caused by influenza viruses adapted for infection in pigs.
禽流感由适应在鸟类中传播的病毒引起，类似地，猪流感由适应在猪中传播的病毒引起。
Pigs can be infected by avian influenza and human influenza viruses as well as swine influenza viruses.
禽流感，人流感以及猪流感病毒都会对猪造成感染；
The gene segments of the internal proteins are avian-like, consistent with European porcine influenza viruses.
内部蛋白的基因片段是禽类似的、欧洲流行的猪流感病毒一致的。
The gene segments of the internal proteins are avian-like, consistent with European porcine influenza viruses.
内部蛋白的基因片段是禽类似的、欧洲流行的猪流感病毒一致的。
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