Because we know that this virus is a really highly infectious virus.
因为我们知道该病毒真的具有非常高的传染性。
This is also a highly infectious virus and has a high fatality rate.
这同样是一种传染性很强的病毒，并切有较高的致死率。
The low efficiency of breast milk transmission is due mostly to the small amount of infectious virus in milk.
哺乳传播的低概率是因为母乳中病毒含量很低。
CDC studies have shown that drying of even these high concentrations of HIV reduces the amount of infectious virus by 90 to 99 percent within several hours.
国度疾病预防掌握中央钻研显示，尽管是这些高浓度的可传染病毒在几小时的干燥进程中将有90% ~ 99%的减少。
If approved by national regulatory authorities, the non-infectious virus could be studied in a broader variety of LABS, removing a major roadblock to finding a cure.
如果能够被国家调控部门批准，这种“无害型”病毒就能在更多的实验室进行研究，为寻找治疗方法扫清最大的障碍。
These asymptomatic herpes carriers shed infectious virus 10% of the 30 or more days they were in the study, report University of Washington researcher Anna Wald, MD, MPH, and colleagues.
华盛顿大学研究者Anna Wald医生与其同事报道，在研究中，这些无症状的疱疹携带者在30或更长的时间内约有10%的时间在传播感染性病毒。
This virus was highly infectious.
这种病毒传染性很强。
There is concern that the virus – if given enough opportunities – will change into a form that is highly infectious for humans and spreads easily from person to person, but this has yet to occur.
令人担忧的是，如果有足够的机会，该病毒将转变成对人类具有高度传染性并很容易在人际传播的形式，但尚未发生这样的事情。
"If scientists are lucky, they'll identify one novel virus in their whole life," said Dr. Anthony s. Fauci, director of the National Institute of Allergy and Infectious Diseases.
“如果够幸运，一个科学家有可能在一生中发现一个新病毒。”国家传染病协会的主管安东尼·福西博士说。
Although the H5N1 virus is highly infectious among poultry, it is not easily transmissible to humans.
虽然H5N1病毒在禽类中具有高度传染性，但却不容易传播给人类。
The hepatitis B virus is 50 to 100 times more infectious than HIV.
乙型肝炎病毒的传染性比艾滋病毒强50至100倍。
Novavax, another American start-up, has had similarly promising results using “virus-like particles” (made of non-infectious viral proteins purged of genetic material).
美国另一家新型企业—诺瓦瓦克斯公司用类病毒物质（即未感染的病原蛋白，且去掉其遗传物质）得到了差不多的结果，都很有前景。
A second risk, of even greater concern, is that the virus - if given enough opportunities - will change into a form that is highly infectious for humans and spreads easily from person to person.
第二个风险，或人们更忧虑的是，病毒如果有足够的机会，可能将变异为对人类更具传染性的类型，在人与人之间迅速传播。
This is the first reported incidence of this highly pathogenic virus on the continent, where people are already enduring the HIV/AIDS pandemic and other serious infectious diseases.
这是这种高致病性病毒在该大陆发生的首次报告，非洲大陆的人民已经在忍受着艾滋病毒/艾滋病的大流行和其它严重的传染病的肆虐。
Modes of transmission are the same for the human immunodeficiency virus (HIV), but HBV is 50 to 100 times more infectious Unlike HIV, HBV can survive outside the body for at least 7 days.
乙型肝炎病毒的传染性比艾滋病毒强50-100倍，乙型肝炎病毒在体外可存活至少7天以上。
The cell phone virus is a computer program, and other computer viruses (procedures) with the same infectious and destructive.
手机病毒也是一种计算机程序，和其它计算机病毒(程序)一样具有传染性、破坏性。
Polyoma virus: Minute infectious agent normally present in extremely small amounts in wild mice without causing obvious ill effects.
多瘤病毒：存在于野鼠身上、数量极少、致病力不强的一种感染性小病原体。
Millions of fish were killed last year when a virus called infectious salmon anaemia swept through Chile's salmon farms.
去年传染性鲑鱼贫血病毒席卷了智利的鲑鱼养殖场，数百万鲑鱼死亡。
After 30 minutes, the number of infectious fingers dropped to two for each virus.
30分钟后，两种病毒各在两个手指上具有传染性。
Free HBV (and infectious duck hepatitis B virus) transcytosed across trophoblastic cells at a rate of 5% in 30 min.
单个乙肝病毒（和感染鸭乙肝病毒）30分钟以5%的速率穿过滋养层细胞。
It is due to infection of human immunodeficiency virus after a fatal infectious disease.
它是由于感染了人类免疫缺陷病毒后引起的一种致死性传染病。
Virus: Microscopic, simple infectious agent that can multiply only in living cells of animals, plants, or bacteria.
病毒：微小、简单的传染因子，仅在动物、植物、细菌的活细胞中能够繁殖。
Rabies is an infectious disease of the central nervous system caused by a virus and spread chiefly by domestic dogs and wild flesh-eating animals.
筐犬病是一种属于中枢神经系统方面的传染病，由病毒引起并主要由家犬和野生的食肉动物传播。
Rabies is an infectious disease of the central nervous system caused by a virus and spread chiefly by domestic dogs and wild flesh-eating animals.
筐犬病是一种属于中枢神经系统方面的传染病，由病毒引起并主要由家犬和野生的食肉动物传播。
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