时间:2019-01-30 作者:英语课 分类:农业与发展


英语课

DEVELOPMENT REPORT - Malaria 1 Vaccine 2
By Karen Leggett


Broadcast: Monday, April 05, 2004


This is Robert Cohen with the VOA Special English Development Report.


 
Graphic 3 Image
Malaria is a very serious disease that kills more children under the age of five than any other disease. People get malaria when they are bitten by tiny insects called mosquitoes. The mosquitoes carry parasites 5 which enter a person's blood and cause malaria.


Carter Dibbs is an American doctor who works on the Malaria Vaccine Development Program for the United States Agency for International Development. Doctor Dibbs says the parasite 4 that causes malaria is much more complex than other organisms, such as the virus that causes polio. He says the malaria parasite uses many tricks so that it is more difficult to make a vaccine that is safe and will prevent the disease.


Malaria vaccines 6 are now being tested on adults in Burkina Faso and Mali. Vaccines are being tested on children in Mozambique and Mali.


Many organizations are involved in the testing. They include U.S.A.I.D, the American military, American health organizations, and European governments.


To make sure that a vaccine will really prevent malaria, it must be tested on many people in many different places. Doctor Dibbs says the people who join the vaccine tests are as important to the goal of finding the right medicine as the scientists.


People are told about the tests during public meetings with community leaders. Doctor Dibbs says people should ask questions about good or bad things that could happen to their bodies if they take the medicine that is being tested. Adults or parents of children must agree to the vaccine test.


Adults receive a small amount of the vaccine medicine. The children receive either the malaria vaccine or a different medicine that protects them against a different disease.


Then health care workers observe the people to see if they show any signs of malaria. The results of the tests must be compared to people who have not received the vaccine.


The vaccine is successful if fifty percent of the people who receive it do not show any signs of malaria for one year.


Then the United States government will be asked to approve the vaccine. However, it could still take another five years before a licensed 7 vaccine is ready to give to all the children in Africa and around the world.


This VOA Special English Development Report was written by Karen Leggett. This is Robert Cohen.



n.疟疾
  • He had frequent attacks of malaria.他常患疟疾。
  • Malaria is a kind of serious malady.疟疾是一种严重的疾病。
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。
adj.生动的,形象的,绘画的,文字的,图表的
  • The book gave a graphic description of the war.这本书生动地描述了战争的情况。
  • Distinguish important text items in lists with graphic icons.用图标来区分重要的文本项。
n.寄生虫;寄生菌;食客
  • The lazy man was a parasite on his family.那懒汉是家里的寄生虫。
  • I don't want to be a parasite.I must earn my own way in life.我不想做寄生虫,我要自己养活自己。
寄生物( parasite的名词复数 ); 靠他人为生的人; 诸虫
  • These symptoms may be referable to virus infection rather than parasites. 这些症状也许是由病毒感染引起的,而与寄生虫无关。
  • Kangaroos harbor a vast range of parasites. 袋鼠身上有各种各样的寄生虫。
疫苗,痘苗( vaccine的名词复数 )
  • His team are at the forefront of scientific research into vaccines. 他的小组处于疫苗科研的最前沿。
  • The vaccines were kept cool in refrigerators. 疫苗放在冰箱中冷藏。
adj.得到许可的v.许可,颁发执照(license的过去式和过去分词)
  • The new drug has not yet been licensed in the US. 这种新药尚未在美国获得许可。
  • Is that gun licensed? 那支枪有持枪执照吗?
学英语单词
-phasia
advanced rural transportation system
ancillary resources
andrologia
arcus frontalis
bacteriomes
battlestars
betula populifolias
Big, large,
Castiglioncello
CC (channel controller)
chinne
Chlormuron-ethyl
chromospheric bubble
close in for the kill
colloidal graphite for fibre glass
conjunctive proposition
Cruikshank
delete capability
disassure
double heterojunction diode
electronic ceramic device
fat vacuole
follicular hydrops
footpad
formals
fourvey
fruitbat
Fua'amotu
geochemical dispersion
glaucarubin
green water deck wetness
grid plate characteristics
inch-meal
inference procedure
intermediate frequency signal
irregular nature of traffic
jumptv
La Virgen, Cerro
Lagarosolen hispidus
landside slope
lead compensation
lignaloe oil
logic control
logrolling legislation
maunching
mearstone
mincing knife
Mitteleschenbach
mole blade
myrons
narrow-leaved white-topped aster
natural theology
Neonalium
neuroautoimmune
new-land
niche differentiation
No power
occupation forces
octothorpe
out of collar
parthenocarpous fruit
Pedicularis pseudocephalantha
pension program
photoepinasty
polar distribution
Portballintrae
property insured
quasi peak
radiation analyzer
reverse conducting thyristor
Rhogogaster dryas
rubidium indium alum
saouma
Saxifraga aristulata
Simchat Torah
simulation centre
sinusoidal trace
skirt
soil erodibility
sour mushroom
stochastic perturbation
submerged coastal plain
taxed product
telectorate
tephrosia
through phrase
thudding
top-hinged swinging door
truth table reducibility
understudies
UnitName
virtual core
virusin
wavelength plate
wild apples
WILKIE
windowless presenter
withdraw an action
workers' management
working dogs
worth his salt