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
12
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 The best hope was withdrawn from trials just over a year ago amid fears that it might actually be making things worse.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
Fool_____Michaelis,hecouldnothavedonesuchathing.A、whoB、asC、thatD、l
ThanksgivingisAmerica’snationalholidayforgivingthankstoGod.Thanksg
Therehasbeenmuchchatteraboutbankloanstolocalgovernments’financ
TowardstheendofJune,auniquejointexpeditionbeganinthewatersnear
下列地下人防工程中防火墙的构造要求,哪项不正确?()A.不宜直接砌筑在基础上
小儿的病理特点不包括下列哪项?( )A.发病容易 B.传变迅速 C.脏气清
证券存管是指证券公司将()统一交给证券登记结算机构保管,并由后者代为处理有关
下列属于往复泵的是( )。A.活塞泵 B.柱塞泵 C.齿轮泵 D.螺杆泵
根据《合同法》,不会产生缔约过失责任的情形是()。A.被依法撤销的合同 B.
引起急性尿潴留的病因中,属于动力性梗阻的是( )。A.膀胱结石 B.膀胱肿瘤
最新回复
(
0
)