这就是为什么许多病毒，如麻疹，只会使我们生病一次。
This is why many viruses, such as measles, make us ill only once.
这是西半球第一次发现该种病毒。
It was the first time the virus had been identified in the Western Hemisphere.
真的好像是我们每转一次身就会有一个新病毒出现。
It does seem like every time we turn around there's a new virus.
世卫组织在今年7月首次收到关于大流行性流感病毒对奥司他韦具有耐药性的报告。
WHO received the first report of an oseltamivir-resistant pandemic virus in July.
而且下一次，病毒是否会从致命性人类疾病实验室中外泄？
And next time, could it be from a lab handling deadly human diseases?
结论孕妇风疹病毒感染与孕次有一定的关系，与孕龄无关。
Conclusion: There was some relationship between Rubella virus infection in pregnant women and parity.
这第一次证实了甲类流感病毒可以引起犬类疾病。
This was the first evidence of an influenza A virus causing disease in dogs.
日前，人类第一次看到了艾滋病病毒的诞生过程。
Recently, the first human to see the birth of the AIDS virus process.
我们几个月前第一次听说H1N1病毒。
We heard about the H1N1 virus for the first time just months ago.
这些病毒可能会造成下一次大流行。
These viruses also have the potential to give rise to the next pandemic.
上一次发现该病毒是在1999年。
如：感染艾滋病毒后的第一次症状就是低烧、感冒、咽喉痛。
Such as: HIV infection after the first symptoms are fever, flu, sore throat.
利用高温摄氏200度之简单且直接原理杀死空气中细菌及病毒，一次性可杀死空气中之细菌高达99.99%。
Most simple theory punification by heat up to 200 C, 99.99% for one pass killing efficiency.
利用高温摄氏200度之简单且直接原理杀死空气中细菌及病毒，一次性可杀死空气中之细菌高达99.99%。
Most simple theory punification by heat up to 200 C, 99.99% for one pass killing efficiency.
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