时间:2019-01-14 作者:英语课 分类:VOA标准英语2010年(十)月


英语课

While the most promising 1 AIDS vaccine 2 trial ever took place in Thailand, Africa is playing a major role in AIDS vaccine research. The International AIDS Vaccine Initiative (IAVI) works in partnership 3 with African countries in researching the virus which has infected tens of millions of people on the continent.


"The benefits for Africa are immense," says Gwynneth Stevens, director of the initiative's Clinical Laboratory Program for research and development in South Africa, "Today, IAVI supports and operates 11sophisticated clinical trial facilities in collaboration 4 with local scientists and institutions in five countries in Africa. So currently, the countries make a huge contribution to the data that is generated."


The five countries are Kenya, Uganda, South Africa, Rwanda and Zambia.


Stevens adds that the sites generate valuable information on HIV prevalence and incidence, immunology and safety, as well as on the development of disease.


Do or die


The only real way to stop the AIDS epidemic 5 is by developing a vaccine, Stevens says. There is no cure. While anti-retroviral drugs prolong lives, they still fail to rid the body completely of HIV.


She says while working toward that goal, IAVI is strengthening local and national health care systems:


"While we're en route to the development of a vaccine, there are huge contributions that NGOs like ourselves, make to Africa. For example, capacity building."


She points to state of the art laboratories which have improved the standard of health care in those regions, both by being available and by facilitating support for the clinical trials.




Scientists don't know when a successful AIDS vaccine might be found. However, Stevens points to the encouraging results of a trial conducted in Thailand last year in which almost a third of those participating were protected against HIV infection:


"While we can't pinpoint 6 the exact day and time I think the scientific breakthroughs over the last 18 months have really showed us that scientifically, the development of a preventative HIV vaccine is possible."


Trials in phases




The trials are conducted in three phases. The Thailand trial was a third phase experiment. Follow-up trials are planned, but the first one is a long way off. It's not expected to begin until 2014.


None of the vaccine candidates being studied in Africa have gotten that far. However, there are a number of promising candidates that will undergo further testing at the end of this year or in 2011. If they're successful, they could go to the last stage of testing – phase three trials – by 2014.

 



adj.有希望的,有前途的
  • The results of the experiments are very promising.实验的结果充满了希望。
  • We're trying to bring along one or two promising young swimmers.我们正设法培养出一两名有前途的年轻游泳选手。
n.牛痘苗,疫苗;adj.牛痘的,疫苗的
  • The polio vaccine has saved millions of lives.脊髓灰质炎疫苗挽救了数以百万计的生命。
  • She takes a vaccine against influenza every fall.她每年秋季接种流感疫苗。
n.合作关系,伙伴关系
  • The company has gone into partnership with Swiss Bank Corporation.这家公司已经和瑞士银行公司建立合作关系。
  • Martin has taken him into general partnership in his company.马丁已让他成为公司的普通合伙人。
n.合作,协作;勾结
  • The two companies are working in close collaboration each other.这两家公司密切合作。
  • He was shot for collaboration with the enemy.他因通敌而被枪毙了。
n.流行病;盛行;adj.流行性的,流传极广的
  • That kind of epidemic disease has long been stamped out.那种传染病早已绝迹。
  • The authorities tried to localise the epidemic.当局试图把流行病限制在局部范围。
vt.准确地确定;用针标出…的精确位置
  • It is difficult to pinpoint when water problems of the modern age began.很难准确地指出,现代用水的问题是什么时候出现的。
  • I could pinpoint his precise location on a map.我能在地图上指明他的准确位置。
学英语单词
a mountain range
actual volume
additional safety valve
ampulla of Vater
anticytotoxic
antitemporal
astronomical measurement
axis deer
blackdamp
blow-pipe
blue-blue
bob pendulum
brain-teasers
China blue
classification and coding systems
Columbia tiger lily
consummate art
Curarin-HAF
decreasing failure rate (dfr)
depreciation of capital
disputed property
dog-head spike
Dorlone
draw slide
echo Doppler indicator
eldest
fascine work
fecundations
fenethazine
Fergusonite-beta-(Ce)
flour copper
FRELIMO, Frelimo
gambling in group
Geni, Khawr
genus austrotaxuss
ground based repeater
handled television camera
high power gain
id-al-adha
impassable gulf
implicit smoothing
income account
indirect warping
Ipahuazu
lateral sural cutaneous nerve
lemming
let ride
life process
liquid-solid contraction
mahlers
mazing test
metaphenylene
Microtoena affinis
mintexes
Mitogenactivated
montherlant
newcastle ripper
noondays
Not a Number
on occasions
Pedro Sancho
pentoside
physico-mechanical
pigeon tick
polydemic
poplike
pour into centrifugal
pre decision
producers' goods
quanton
Ravona
relocating assembler
residual settlement
return-tubular boiler
robusta coffee
S. & B.
sativic acid
sensitivity of microphone
single spar
sorting screen
spotted graphite-schist
strainer cartridge
stratified cone
stress-optical law
striking casting
strobe tuner
Su-11
sweet osmanthus?
symbiotrophic
thranites
to break the ice
trona
turn the facts upside down
tweetaholic
type A spermatogonium
us -athon
Vila Verde
volatile matter content
voormann
water conservancy construction
weigh-in buggy
ydought