黄热病由蚊子传播的病毒引起。
Yellow fever is caused by a virus transmitted by mosquitoes.
基孔肯雅热是一种通过蚊子传播的病毒性疾病。
Chikungunya is a viral disease that is spread by mosquitoes.
因为SIV能变异成能在人类中传播的病毒。
SIV can mutate into a form that allows it to pass from human to human.
MELISSA是最早通过电子邮件传播的病毒之一。
异性间的性接触是造成大多数艾滋病病毒传播的原因。
Heterosexual contact is responsible for the bulk of HIV transmission.
另一个是防止H 病毒的传播。
这里可能有许多靠空气传播的病原体携带病毒。
There would have to be some sort of airborne pathogens that spread the virus.
这一行动是亚洲各地为防止病毒传播所采取的最严厉措施。
It was the toughest measure taken in Asia to curb the spread of the virus.
我们处在脊髓灰质炎(脊灰)病毒传播的淡季。
只有在容易传播的情况下病毒才会传播。
我们有充分理由猜测，病毒在传播的过程中，其致命毒力逐渐减弱。
There is good reason to suspect the virus will become less lethal as it spreads.
如何预防疱疹病毒的传播？
疱疹病毒是如何传播的？
随着该病毒的传播，兔子数量从6亿只急速减至1亿只。
The virus spread, and the rabbit population dropped from six-hundred million to one-hundred million.
然而，当该补丁的传播速度比病毒来得慢时，它可能并不能够阻止病毒的蔓延。
However, while the patch may slow the spread of the virus it may not be enough to stop it.
此外，有一个已经被充分证明的使用药物阻止病毒传播的方法。
Moreover, there is already one well-proven way of stopping the virus's transmission using drugs.
随后的调查确定，至少发生了一些老虎与老虎之间的病毒传播。
Subsequent investigation determined that at least some tiger-to-tiger transmission of the virus occurred.
国际航空旅行的增多促使登革病毒在全球范围快速传播。
Increase in international air travel is facilitating the rapid global movement of dengue viruses.
尚缺的唯一条件是需要出现具有迅速人际传播能力的病毒。
The only condition missing is a virus that is capable of rapid transmission among humans.
如果它能减缓艾滋病病毒的传播，卫道士可能得到一个理由。
If it had slowed the spread of HIV, moral advocates might have had a point.
党有很多儿童被接种，有极少的麻疹病毒传播。
When lots of children have been vaccinated, less measles virus is spread around.
警戒，从定义上来说，是衡量一个新的病毒的传播，而不是其致命性。
The alerts, by definition, measure a new virus's spread, not its lethality.
人们通常关注的是病毒传播能力。
有两个关键因素：病毒的传播性和其毒性。
There are two crucial factors: the transmissibility of the virus, and its virulence.
这种前所未知的传播机制会导致抗击病毒感染的新方法。
This previously unknown mechanism may lead to new ways to combat viral infections.
迄今为止，没有关于亨德拉病毒人际传播的记录。
To date, no human-to-human transmission of Hendra virus has been documented.
迄今为止，没有关于亨德拉病毒人际传播的记录。
To date, no human-to-human transmission of Hendra virus has been documented.
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