鸟类是西尼罗河病毒的自然宿主。
病毒的自然宿主：未知。
猪是该病毒的自然宿主和贮存者。
该州反对派领导人曾呼吁扑杀该病毒的自然宿主——蝙蝠。
The state opposition leader had called for a cull of bats, the virus natural host.
一段时间以来，已知野水禽是所有A型流感病毒的自然宿主。
Wild waterfowl have been known for some time to be the natural reservoir of all influenza a viruses.
埃博拉病毒的自然宿主似乎居于非洲大陆的雨林以及西太平洋地区。
The natural reservoir of the Ebola virus seems to reside in the rain forests of the African continent and in areas of the Western Pacific.
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。
Although natural hosts are birds, the avian influenza viruses are known to cross species barriers to infect other mammals, including humans.
据信，它们像人类一样，是受到自然宿主或通过来自自然宿主的传播链受到直接感染。
They, like humans, are believed to be infected directly from the natural reservoir or through a chain of transmission from the natural reservoir.
人口增长的压力迫使人们进入以往无法居住的地区，破坏了微生物与其自然宿主之间的微妙平衡。
The pressures of population growth push people into previously uninhabited areas, disrupting the delicate equilibrium between microbes and their natural reservoirs.
禽流感病毒可感染许多鸟类和哺乳动物，但是其自然宿主范围通常限于野生水禽，如野鸭、海鸥等。
Avian influenza virus can cause serious disease in a wide variety of birds and mammals, but generally its natural host range is limited to wild ducks and gulls.
经过不懈的努力和艰苦的探索，科研人员终于找出了该病毒的自然宿主，它很可能是生活在非洲的绿猴或称非洲猴。
After tireless efforts and arduous exploration, researchers finally identified the virus's natural reservoir, it is likely to be living in Africa, African green monkeys or monkey.
同时，由于自然选择更倾向于选择那些能够感染宿主但不致其死亡的病毒，这种致命病毒便随着宿主的死亡而消失。
Meanwhile, the deadliest strains of the virus perished with their hosts as natural selection favored strains that could infect hosts but not kill them.
有时，在宿主-寄生虫关系中观察自然选择的影响实际上是可能的。
At times, it is actually possible to watch the effects of natural selection in host-parasite relationships.
一个国际科学家小组正在努力查明病毒的宿主及其在环境中的自然传播方式。
An international team of scientists is working to identify the hosts of the virus and mode of its natural transmission in the environment.
有证据表明宿主可能包括蝙蝠，但是仍需开展更多的研究来证实其自然传播链。
There is evidence that bats are involved, but much work remains to be done to definitively describe the the natural transmission cycle..
当宿主弱化或是当寄生虫侵扰比较不能保护自身与保持平衡时，宿主很自然的就容易染上其他疾病。
Where the host is weakened or less capable to protect itself and maintain balance due to an infestation, the host naturally becomes more susceptible to other diseases.
很多动物是西尼罗河病毒的宿主，但该病毒主要还是通过当地的一些蚊子来传播，这些蚊子是知更鸟的食物，鸟吃了蚊子，自然也变成宿主了。
A variety of animals can serve as hosts for West Nile, but the virus primarily spreads through a few species of mosquitoes that usually feed on birds, and those bird species, which become viral hosts.
第二中间宿主为景洪溪蟹和毛足溪蟹，前者的自然感染率为53.19%，后者为66.67%。
The second intermediate hosts are Potamon chinghungense and Potamon hispidum, with natural infectious rates of 53.19% and 66.67% respectively.
西尼罗病毒(WNV)感染是一种经蚊虫传播，以鸟类为主要动物宿主的自然疫源性疾病。
West Nile virus (WNV) infection is an endemic disease caused by WNV that is maintained in a natural transmission cycle involving mosquito vectors and bird reservoir hosts.
野生水鸟是所有甲型流感病毒的自然储存宿主，通常这些病毒对它们不具有致病性。
Wild waterfowl are the natural reservoir of all influenza a viruses, and these viruses are usually nonpathogenic in these birds.
结果表明，IBD流行的鸡场里的麻雀能够发生IBDV自然感染，麻雀可能是IBDV的贮存宿主或二次传染源之一。
The results indicated that the sparrows could naturally be infected with IBDV and might be a reservoir or secondary infection resource of IBDV.
自然阴转可使宿主传染性降低或消失，病情趋于稳定。
Natural Yin turn can make host infectious reduce or disappear, disease remained stable.
方法定期对中间宿主孳生环境和中间宿主的密度观察，并解剖检查中间宿主自然感染情况。
Methods The breeding environment and the density of intermediate host were observed at regular intervals and the natural infectious status of intermediate host was surveyed by dissection.
目的调查广西壮族自治区(广西区)肾综合征出血热(HFRS)宿主动物及其自然感染汉坦病毒状况。
Objective To identify the host animals of hemorrhagic fever with renal syndrome (HFRS) and their natural infections with hantavirus in Guangxi.
媒介昆虫和宿主动物潜能及自然疫源地活力也显著高于苗圃林半保护区和农业开垦区；
Vector competence of reservoir hosts and value of natural foci from protected natural forests area were also remarkably higher than those areas of semi-protected nursery forests and farmland.
宿主是指在自然条件下被病原体寄生的人或动物。
The host is refers to under the natural condition by the pathogen parasitism person or the animal.
野生动物是多数自然界病原体的天然宿主，野生动物重大疫病和人类公共卫生问题息息相关。
Wildlife is the natural reservoir for most pathogens, and furthermore some important diseases in wildlife are closely linked to public health.
然而，它表面自然形成的二氧化钛膜层使其呈现出生物惰性，植入人体后难以和宿主骨间形成强有力的化学键合；
However, the natural titanium oxide film formed on its surface make it bio-inert, it is difficult to achieve chemical bond with bone and form new bone on their surfaces;
结果表明，IBD流行的鸡场里的麻雀能够发生IBDV自然感染，麻雀可能是IBDV的贮存宿主或二次传染源之一。
The results indicated that the sparrows could naturally be infected with IBDV and might be a reservoir o...
结果表明，IBD流行的鸡场里的麻雀能够发生IBDV自然感染，麻雀可能是IBDV的贮存宿主或二次传染源之一。
The results indicated that the sparrows could naturally be infected with IBDV and might be a reservoir o...
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