首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
It has become a cliche among doctors who deal with AIDS that the only way to stop the epidemic is to develop a vaccine against H
It has become a cliche among doctors who deal with AIDS that the only way to stop the epidemic is to develop a vaccine against H
admin
2013-06-02
47
问题
It has become a cliche among doctors who deal with AIDS that the only way to stop the epidemic is to develop a vaccine against HIV, the virus that causes it. Unfortunately, there is no sign of such a thing becoming available soon. The best hope was withdrawn from trials just over a year ago amid fears that it might actually be making things worse. As a result, vaccine researchers have mostly gone back to the drawing board of basic research. Meanwhile, the virus marches on. Last year, according to UNAIDS, the international body charged with combating it, 2.7 million people were in fected, bringing the estimated total to 33 million.
Reuben Granich and his colleagues at the World Health Organization (WHO), though, have been exploring an alternative approach. Instead of a vaccine, they wonder, as they write in The Lancet, whether the job might be done with drugs.
In the spread of any contagious disease, each act of infection has two parties, one who already has the disease and one who does not. Vaccination works by treating the uninfected individual prophylactically (预防地). Since it is" impossible to say in advance who might be exposed, that means vaccinating everybody. The alternative, as Dr. Granich observes, is to treat the infected individual and thus stop him being infectious. For this to curb an epidemic would require an enormous public-health campaign of the sort used to promote vaccination. But that campaign would be of a different kind. It would have to identify all (or, at least, almost all) of those infected. It would then have to persuade them to undergo not a short, simple vaccination course, but rather a drug regime that would continue indefinitely.
The first question to ask of such an approach is, could it work in principle? It is this that Dr. Granich and his colleagues have tried to answer. Using data from several African countries, they have constructed a computer model to test the idea. In their ideal world, everyone over the age of 15 would volunteer for testing once a year. If found to be infected, they would be put immediately onto a course of what are known as first-line antiretroviral drugs (ARVs). These are reasonably cheap, often generic, pharmaceuticals (医药品) that, although they do not cure someone, do lower the level of the virus in his body to the extent that he suffers no symptoms. They also -- and this is the point of the study -- reduce the level enough to make him unlikely to pass the virus on. For the 3% or so of people per year for whom the first-line ARVs do not work, more expensive second-line treatments would be used.
What does the author tell us about Dr. Granich and his collegues and their trials?
选项
A、They use data from some African countries and other poor countries.
B、They want to find out whether the alternative approach can function.
C、The first-line antiretroviral drugs are effective in curing patients.
D、Their study is to let the patients have no symptoms of AIDs.
答案
B
解析
推理判断题。由定位句可知,Dr. Granich和其同事们想要通过研究知道这一方法能否起作用,B 符合题意。
转载请注明原文地址:https://kaotiyun.com/show/HT67777K
0
大学英语六级
相关试题推荐
A、Youhavetoprovethefailureofyourmarriage.B、Noneedtoclaimwrongdoingbytheotherspouse.C、Theotherspouseagreest
MasstransportationrevisedthesocialandeconomicfabricoftheAmericancityinthreefundamentalways.Itspeededupphysica
MasstransportationrevisedthesocialandeconomicfabricoftheAmericancityinthreefundamentalways.Itspeededupphysica
MasstransportationrevisedthesocialandeconomicfabricoftheAmericancityinthreefundamentalways.Itspeededupphysica
MasstransportationrevisedthesocialandeconomicfabricoftheAmericancityinthreefundamentalways.Itspeededupphysica
MasstransportationrevisedthesocialandeconomicfabricoftheAmericancityinthreefundamentalways.Itspeededupphysica
A、Thefast-developingtechnology.B、Thepeoplewhodesigndifferentapplications.C、ThewayhowpeoplemakeuseoftheInternet.
SuggestionsforImprovingReadingSpeedImprovementofReadingRateItissafetosaythatalmostanyonecandoublehisorh
SuggestionsforImprovingReadingSpeedImprovementofReadingRateItissafetosaythatalmostanyonecandoublehisorh
A、Theythinkcinemasaretoofarawayfromtheirhome.B、Theyaredisappointedwiththefilmsproducedthesedays.C、Theybothd
随机试题
用力呼吸的描述,不正确的是
可用于治疗肿瘤的药物是
管理本行政区域医师工作的机构是
与发生前置胎盘关系最小的病因是( )
能发现焊缝内部气孔、夹渣、裂纹及未焊透等缺陷的目前应用较为广泛的无损检测方法是()。
工程施工过程中应当采取消防安全措施,下列说法中错误的是( )。
不论人们在主观上承认与否,在客观的效果上,教育的努力最终_________在处于未来背景下的某一特定的社会阶段中表现出来,因此,教育总是要表现出一种为未来社会服务的职能。填入横线上最恰当的是()。
由于含糖饮料的卡路里含量高,容易导致肥胖,因此无糖饮料开始流行,经过一段时期的调查,李教授认为,无糖饮料尽管卡路里含量低,但并不意味它不会导致体重增加,因为无糖饮料可能导致人们对于甜食的高度偏爱,这意味着可能食用更多的含糖类食物。而且无糖饮料几乎没什么营养
甲是一家知名电子公司的业务经理,男,35岁。甲12年前大学本科毕业后参加工作。甲为了获得更大的发展机会,于2015年10月报考了某校的MBA。但因离校10多年,甲对自己即将参加的考试心中没底,于是报名后便在网上找到了某替考机构,并与该替考机构的乙签订了“合
A、 B、 C、 D、 C
最新回复
(
0
)