首页
登录
职称英语
It has become a cliche among doctors who deal with AIDS that the only way t
It has become a cliche among doctors who deal with AIDS that the only way t
游客
2024-05-08
14
管理
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 The best hope was withdrawn from trials just over a year ago amid fears that it might actually be making things worse.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. [br] 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://tihaiku.com/zcyy/3588868.html
相关试题推荐
[originaltext]Asyoupreparetobecomeelementaryschoolteachers,you’llb
[originaltext]Asyoupreparetobecomeelementaryschoolteachers,you’llb
IthasbecomeaclicheamongdoctorswhodealwithAIDSthattheonlywayt
IthasbecomeaclicheamongdoctorswhodealwithAIDSthattheonlywayt
IthasbecomeaclicheamongdoctorswhodealwithAIDSthattheonlywayt
[originaltext]Moods,saytheexperts,areemotionsthattendtobecomefixe
Videogameshavebecomeincreasinglypopularinbotharcadesandtheaverage
Videogameshavebecomeincreasinglypopularinbotharcadesandtheaverage
Videogameshavebecomeincreasinglypopularinbotharcadesandtheaverage
[originaltext]Formostpeople,readinganewspaperhasbecomeahabitpass
随机试题
[originaltext]Oneimportantthingaboutartmovementsisthattheirpopular
NosoonerhadLucyarrivedattheairport______theplaneleft.A、untilB、thenC、w
公路工程项目施工结束,应按照有关规定进行交工和竣工验收,未经验收或者验收不合格的
招用已满十六周岁未成年人的单位和个人应当执行国家在工种、劳动时间、劳动强度和保护
在唱歌课《雪绒花》学唱环节,学生们在老师的钢琴伴奏声中都很投入并轻柔地演唱这首旋
以下哪一种风险属于非系统性风险()。 ①财务风险 ②经营风险 ③利率风险
下列各项中,需要进行全面清查的情况有( )。A.年终决算之前 B.企业股份制
下列选项不符合个人信用贷款借款人的基本条件的是( ).A.有违法行为及不良信用
A.常见药品不良反应 B.轻微药品不良反应 C.新的药品不良反应 D.严重
某企业20×1年年末经营资产总额为4000万元,经营负债总额为2000万元。该企
最新回复
(
0
)