即使在感染你的时候，感冒病毒也会发生变异，而且新的病毒毒株经常出现，以至于当制药商研制出针对其中一种变异的疫苗时，血清已经过时了。
Colds mutate even while they're infecting you, and new strains pop up so often that by the time drug-makers create a vaccine against one variation, the serum is already out of date.
那就给毒株混杂与重组提供充足的机会。
That provides ample opportunity for strains to mingle and recombine.
H5N1是已知感染人类的H5亚型内唯一毒株。
H5N1 is the only strain within the H5 subtype known to infect humans.
那就给毒株混杂与重组提供充足的机会。
That provides ample opportunity for strains to mingle and recombine .
H5N1是H5亚型中已知引起人间感染的唯一毒株。
H5N1 is the only strain within the H5 subtype known to cause human infections.
所涉及的具体毒株为H5N1、H7N7和H7N3。
H1N1病毒与过去的某些流感毒株相比生长更为高效。
The H1N1 virus itself grows more efficiently than some past flu strains.
当时，H1N1病毒新毒株既不在视野之内，也未在该文件中提及。
The new H1N1 virus was neither on the horizon at that time nor mentioned in the document.
在这方面，将该病毒与来自以往暴发的毒株进行比较可能是有益的。
In this regard, comparisons of the virus with strains from previous outbreaks may be instructive.
此外，低致病性H9N 2毒株(亚洲系)也引发了人间少数轻微呼吸道疾病病例。
In addition, the low-pathogenic H9N2 strain (Asian lineage) has caused a few human cases of mild respiratory illness.
研究人员坚信通过给人体接种正确的抗体，能够终生免受大部分甚至全部流感毒株的感染。
By arming the human body with the right kinds of antibodies researchers believe they could provide lifelong protection from most influenza strains, and perhaps even all of them.
很多猩猩和猴子都带有自己的SIV毒株，但病毒感染灵长类多久了一直不清楚。
Many apes and monkeys carry their own strain of S.I.V, but it's not clear how long the viruses have been infecting primates.
这两种抗体具有广泛的中和性，也就是说对目前发现的数千种HIV毒株中的大部分都适用。
They are 'broadly neutralizing,' which means they can target most of the many thousands of HIV strains.
相反，病毒与在中国南方最近分离出的毒株相似，这表明病毒是从中国传播到泰国和老挝的。
Instead, the virus is similar to recent isolates from southern China, suggesting that the virus spread from China to Thailand and Laos.
经过一段时间，形成一种混合物，它包含实验室毒株的内部成分以及大流行毒株的外部成分。
After a while, a hybrid is formed which contains the inner components of the laboratory strain, and the outer components of the pandemic strain.
这项研究表明，在一个典型的寒冷季节，如多个毒株流通传播，重组合可能会导致新病株迅速出现。
The study demonstrated that in a typical cold season, when many strains are circulating, recombination could cause new strains to emerge rapidly.
世卫组织指出，墨西哥感染病例中已有18例被证实感染了H1N1型猪流感病毒的一个新毒株。
The WHO said the virus from 18 of the Mexican patients was the same genetically as a new strain of swine flu, H1N1.
世卫组织指出，墨西哥感染病例中已有18例被证实感染了H1N1型猪流感病毒的一个新毒株。
The WHO said the virus from 18 of the Mexican patients was the same genetically as a new strain of swine flu, H1N1.
应用推荐