Using HPCs from umbilical cords and commercial LABS, the researchers demonstrated in test-tube experiments that the virus not only infected the cells but also could remain latent.
研究人员使用脐带中和盈利性实验室里的定向造血干细胞，通过在试管中进行试验演示出，病毒不但可以感染细胞而且还能保持潜伏状态。
In the US, there have been 109 confirmed cases and only one fatality and that was a Mexican toddler who had travelled to the US after becoming infected.
在美国，109认为被确诊患病，但是只有一例死亡，而且这仅有的一例也是墨西哥的一个婴儿，他在被感染后施行到了美国。
In 2006, WHO reported that only 1% of the total estimated number of people infected with HIV worldwide were screened for TB.
据世卫组织报告，2006年期间，估计在全世界感染艾滋病毒的总人数中，只有1%的人做了结核筛检。
A person needs only to breathe in a small number of these germs to become infected (although only a small proportion of people will become infected with TB disease).
人只要吸入少量这些病菌，即受到感染(虽然只有少数人感染结核病)。
However, the weight gain was not permanent in every case, lasting only long enough for the infected person to build up resistance to the virus.
然而，这种原因的体重的增加都不是永久的，它只会持续到感染者有能力足以抵抗该病毒为止。
According to a comprehensive study published in the journal Clinical Infectious Diseases, swine flu had infected only several dozen people in the world since it was first identified in 1930.
从发表在《临床传染病》上的综合研究来看，自1930年确认第一例猪流感传染人类的病例以来，世界上被感染的人只有数十位。
In the UK, the Health Protection Agency says that only those who have been within one metre of an infected person for more than an hour are considered to be at risk.
英国健康保护组织宣称，只有当一个人在一米的范围以内接触感染者并超过一个小时才有可能被感染。
But among the wealthier Venezuelan Indians who lived in cities and were only lightly infected with worms, 43 percent had allergies.
但那些富裕的，居住在城市的印第安人，也较少受到各种蠕虫感染，却有43%患有各种过敏症。
Scientists are really interested in this idea that if you infect people with the virus, everybody will get infected, but only 75% of people will actually come down with the cold.
如果用感冒病毒感染人群，人人都会被感染，但只有75%的人会真正患上感冒，科学家对此点十分感兴趣。
He had previously said that only administrative machines at nuclear facilities had been infected.
此前，他曾表示病毒感染范围仅限于核设施内行政部门的电脑。
GOUNDRY mosquitoes are much more susceptible to becoming infected with malaria: When fed on blood spiked with malaria parasites, some 58% became infected, versus only 35% of the home dwellers.
GOUNDRY非常容易被疟疾感染——当它们吸食有疟原虫的血时，58%被感染了，而家蚊只有35%被感染。
Infected children under six years of age do not usually experience noticeable symptoms, and only 10% develop jaundice.
通常6岁以下受感染儿童没有明显的症状，只有10%的人出现黄疸。
Early research found that 30% of obese people were infected with Ad-36, while only 11% of non-obese people were infected.
早期研究发现，30%的肥胖者受到了Ad - 36所感染，而只有11%的非肥胖者受到了感染。
Mr Ahmed willingly concedes that his group represents only a tiny fraction of those infected with HIV, the AIDS-causing virus, in a city of almost half a million people.
Ahmed先生承认，在这个拥有近50万人口的城市里，他们只代表了当地艾滋病病毒感染者中非常少的一部分。
Only I knew that Hattie was infected with a secret fever, more gruesome than either of them could imagine.
只有我知道，海蒂被一种神秘的热病感染了，那比他们任何人所能想象到的还更可怕。
When tested at six months, only three of the infants were infected, compared to the 50 that would likely have been infected had they not received the antiretroviral.
六个月之后的检查表明，只有三个婴儿染上了病毒。相比之下，如果不对他们采取抗逆转病毒治疗的话，可能会有50人染上病毒。
It seems I am the only one in our district who lets people know about the disease. Others still hide... in my case, my husband was infected, and then, me, and our child.
我好像是我们这里向唯一人们公开我得了艾滋病的人，而其他人仍然躲藏着，掩盖着……不管怎样，因为我的丈夫被感染了，我自己和孩子随后也被感染了。
However, smile is the only infection we are all happy to be infected with, aren't we?
然而，笑想必是我们都乐意被传染的唯一传染病吧，不是么？
Not only could tracking technology help against theft, but it could also streamline inventory control for ranchers, and restrict health-related recalls to meat that is likely to have been infected.
追踪技术不仅可以防止偷牛行为，还可以用于简化存货控制，以及用于控制健康相关的牛肉召回问题。
Ultimately the only current solution is for companies to patch their machines, quarantine and remove malware from infected machines, and disallow use of USB storage devices.
最终，惟一正确的解决方法是为企业修补他们的机器，检查和删除来自被染毒电脑的恶意软件，和禁止使用USB存储设备。
Not only are seasonal flu strains circulating but also the H5N1 avian influenza virus, which has killed 258 out of 423 people infected since 2003.
除了季节性流感，H5N1禽流感也是会流通的，自从2003年开始，禽流感已经感染了423人，其中造成258人死亡。
By the end of the trial only 125 people had become infected with HIV.
到了试验结束时，只有125人感染了艾滋病毒。
But after a further 27 months, only half of the surviving HIV-infected children maintained antibody levels high enough to protect against measles, versus almost 90 per cent of healthy children.
但是又经过27个月后，幸存的感染艾滋病的儿童中只有一半的抗体浓度维持在有效水平，而健康儿童的数字几乎是90%。
A person needs only to inhale a small number of these to be infected.
一个人只需要吸入少量结核杆菌，就可染病。
A person needs only to inhale a small number of these to be infected.
一个人只需要吸入少量结核杆菌，就可染病。
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