Agency chief Margaret Chan has expressed concern there is not a good process in place to produce enough vaccine against the virus.
VOA: special.2009.08.05
You make a recombinant virus that has all the normal components of the virus but also has a gene that you want.
你就造出了一个重组病毒,它有普通病毒的各种组分,又带有你需要的基因
Make a lot of the virus, it has all of its antigenic epitopes on it, but we'll just kill it so that it can't replicate.
先增殖出大量的病毒,病毒表面有特定的抗原决定簇,然后杀死病毒使其无法复制
"It reacts with that region, it inactivates the virus and the virus never has a chance to enter the cells that it would otherwise infect."
VOA: special.2010.07.14
But if you're trying to use that virus as a gene delivery vector and your body gets rid of it then the therapy has failed, it's ended.
但如果你想把腺病毒作为基因治疗载体,而你的身体清除这种病毒,治疗就失败了,前功尽弃了
Phase four means that a virus has gained the ability to cause community-level outbreaks.
VOA: special.2009.05.06
The virus then can self-assemble, that is, you've made a lot of genetic material, you've made a lot of the structural pieces, there has to be some way that the virus can reassemble, repackage itself into active forms.
于是,病毒可以进行自组装了,也就是说,已经制造出大量的遗传物质,也制造出了大量蛋白质外壳,那么病毒就能通过某些方式,重新装配或者重新组合成活性状态
The current spread of a swine influenza virus has added to these concerns.
VOA: special.2009.07.14
One death from the virus has been confirmed in the U.S.of a small child in the state of Texas.
VOA: standard.2009.05.01
To slow the spread of the virus and relieve the strain on the country's health system, the government has set up a national pandemic flu service, where people who suspect they're infected can get a diagnosis and prescription for antiviral drugs over the phone or Internet.
VOA: standard.2009.07.31
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