Marburg virus has killed more than two hundred people in northern Angola. The rare virus has been deadly in nine out of ten cases.

马尔堡病毒在安哥拉北部至少夺取了两百个人的生命。这种病毒十有八九会致命。

The ability of this virus to cause rare but severe disease in humans is well documented.

已有大量文件证明该病毒在人类引起罕见但严重的疾病的能力。

Human-to-human transmission of avian flu is rare, but in some cases the virus has passed from poultry to humans.

禽流感在人类之间的传播是罕见的，但在某些情况下，该病毒可以经家禽传染给人类。

Human-to-human transmission of avian flu is rare, but in some cases, the virus has passed from poultry to humans.

禽流感在人类之间的传播是罕见的，但在某些情况下，该病毒可以经家禽传染给人类。

Each was a mixture of host DNA and the genes of a rare, dangerous virus.

两个分别是混合了的宿主DNA和罕见而又危险的病毒DNA。

It's a rare person who hasn't already had spam and virus e-mails land in their inbox.

谁没有收过垃圾邮件和病毒邮件。

In very rare instances, the virus in the vaccine can mutate into a form that can paralyse - this is what is known as a vaccine-derived poliovirus or VDPV.

在极少情况下，疫苗中的病毒可能变异成一种可导致瘫痪的类型，这就是人们所称的疫苗衍生脊髓灰质炎病毒(VDPV)。

Spill-over of Hendra virus from fruit bats to horses is rare.

亨德拉病毒从果蝠传播给马匹的情况很少见。

Experience in south-east Asia indicates that human cases of infection are rare, and that the virus does not transmit easily from poultry to humans.

东南亚的经验表明，人的感染病例很少，并且该病毒不会容易地从家禽传播到人。

Rare birds and people from other host was infected with influenza virus, but they can be transmitted to the same influenza strain has its own pig.

珍稀鸟类和人民从其他主机感染了流感病毒，但他们可以传播到同一流感有自己的猪。

Human infection is still very rare, but the virus that causes the infection in birds might change, or mutate, to more easily infect humans.

禽流感病毒感染人类目前还是非常少见的，但是感染鸟类的病毒可能会产生变异，从而变得更加容易感染人类。

Although human infections with this avian virus are rare, such infections are severe and death has occurred in 60% of all documented cases.

虽然人类感染禽流感病例很罕见，但此类感染非常严重，死亡病例占全部有文献记录病例的60% 1。

So the good news is, human illness from West Nile virus is rare in North America, even in areas where the virus has been reported.

那么，好消息是在北美，甚至是西尼罗河病毒被发现的地区，由西尼罗河病毒引起的人类疾病时很少见的。

The virus is suspected to cause birth defects and a rare condition of temporary paralysis.

人们怀疑，这种病毒可以导致某些出生缺陷和一种罕见的暂时性瘫痪。

But there could well be repeated on the same plant type virus infection, of course, this is a rare phenomenon.

但也不能排除会出现对同一株型病毒的重复感染，当然这只是罕见现象。

The results showed that the virus was rare group C rotavirus in the world.

上述试验表明，该病毒为世界上罕见的C群轮状病毒。

Doctors suspect the Zika virus is linked to a rare neurological condition called microcephaly, which causes babies to be born with abnormally small heads.

医生怀疑寨卡病毒与一种罕见的新生儿小头症有关。

In very rare cases the virus can change and cause polio.

在极其少见情况下，病毒变化并且导致脊髓灰质炎。

Conclusions: Sporadic HEV infection is not rare and the combined infection of HEV with any types of other hepatitis virus can be observed in the clinical practice.

结论：散发性戊型肝炎不少见，HEV可与任何一种或多种肝炎病毒合并感染。

BACKGROUND: Rare earth elements have some biological effects, and broad-spectrum anti-bacterial, anti-inflammatory and anti-virus capabilities, they can increase the bonding strength.

背景：稀土元素具有一定的生物效应，也有广谱抗菌、抗炎和抗病毒的能力，能提高涂层结合强度作用。

However, the "flu" virus usually develops different variants that are specialized for each species of animal that they infect. Cross species infections are rare.

但是，流感病毒通常是针对不同种类的动物滋生出不同的变种病毒，跨物种传染的情况很少。

Joseph Wood and colleagues note that the highly pathogenic (H5N1) avian influenza virus so far has been rare but dangerous in humans, with mortality rates of about 60 percent.

Joseph Wood及其同事表示高致病性禽流感病毒(H5N1)，人类不易感染，但是一旦感染就危险，死亡率约为60%。