时间:2019-01-13 作者:英语课 分类:VOA标准英语2012年(一月)


英语课

Pills Offer New Hope in Fight Against Yaws


Scientists have found that a medicine taken in pill form is just as effective in treating the neglected tropical disease yaws as the usual treatment, a shot of penicillin 1.

The easier-to-use therapy raises new hope for the eradication 2 of the disease.

Yaws is a disease affecting mostly poor children in the tropics. It eats away at skin, cartilage, and bone, affecting an estimated half-million youngsters in Africa, Asia, and South America.

The standard treatment is penicillin, which can be very effective, and an international program nearly eradicated 3 the disease in the 1950s and '60s. But in recent years yaws has reemerged, in part because many infected children don't show any symptoms, and so don't get penicillin.

"For every one case of active yaws that we see, the estimates are that there's up to eight cases of children infected with the yaws organism who don't present because they don't have symptoms at the time," says researcher Russell Hays, a physician at the remote Lihir Medical Center in Papua New Guinea. "And so for that reason, just treating active cases when they come up will never eliminate the disease."

Hays and his colleagues wanted to see if another antibiotic 4 would work as well against yaws, one that would be easier to use in a mass-treatment program.

While penicillin is effective, it also has its downsides: it requires syringes and trained health workers to inject the drug, the needles must be properly disposed of to prevent possible transmission of other disease, and there is a risk of an allergic 5 reaction.

In a study of about 250 children, half got penicillin injections, the others got azithromycin in pill form.

After six months, the results were similar for each group: nearly all children were cured in both groups, and no serious side effects were reported.

But Hays, whose research appears in The Lancet, says this alone isn't enough to switch to the azithromycin pills.

"From our point of view, we feel that the next logical step is to conduct a mass drug administration of azithromycin in a limited setting, and to then follow up that population and see if we can demonstrate that yaws can be eliminated from a particular location."

In a commentary, also in The Lancet, tropical disease expert David Mabey, of the London School of Tropical Medicine and Hygiene 6, agrees with the need for more research. But he also worries that the yaws bacteria might develop resistance to azithromycin.



n.青霉素,盘尼西林
  • I should have asked him for a shot of penicillin.我应当让他给我打一针青霉素的。
  • Penicillin was an extremely significant medical discovery.青霉素是极其重要的医学发现。
n.根除
  • The eradication of an established infestation is not easy. 根除昆虫蔓延是不容易的。
  • This is often required for intelligent control and eradication. 这经常需要灵巧的控制与消除。
画着根的
  • Polio has been virtually eradicated in Brazil. 在巴西脊髓灰质炎实际上已经根除。
  • The disease has been eradicated from the world. 这种疾病已在全世界得到根除。
adj.抗菌的;n.抗生素
  • The doctor said that I should take some antibiotic.医生说我应该服些用抗生素。
  • Antibiotic can be used against infection.抗菌素可以用来防止感染。
adj.过敏的,变态的
  • Alice is allergic to the fur of cats.艾丽斯对猫的皮毛过敏。
  • Many people are allergic to airborne pollutants such as pollen.许多人对空气传播的污染物过敏,比如花粉。
n.健康法,卫生学 (a.hygienic)
  • Their course of study includes elementary hygiene and medical theory.他们的课程包括基础卫生学和医疗知识。
  • He's going to give us a lecture on public hygiene.他要给我们作关于公共卫生方面的报告。
学英语单词
6-O-Methylerythromycin
age sex composition
All-souls'-day
almost-certain
aluminium conductor aluminium clad steel reinforced
aphyllous plant
astatic electro dynamometer
bark picture
bloody shame
breeder cockerel
bung fodder
cable ferry
cantacuzinoes
cayugas
cerebral diataxia
Ceylon cinnamon tree
chhertums
chicadees
chip-breaking flute
cholopleth map
closed high
coextend
crane fall
Darwinian
DBMC
DC arc welding
dealings in foreign notes and coins
distorted polyhedra
electrical degree
end breakage rate
endo-dextranase
exhaust column
f.thomas
financial indicator
flexible tube pump
folk dancers
Forkville
freedom of conscience
fundamental diagram
green leech
grill car
grow like a weed
grunberg
high resolution spectrometer
high-wrought
hit your stride
hold on
immediate address mode
impetiginous syphilid
in bad shape
insurrectionary officer
intrazone
kicking horse p.
lead(ii) iodate
ligamenta hyothyreoideum medium
logging machinery
Louys, Pierre
monosalient pole
mumismatics
myeloid metaplasia
nuzzling
Oboke-kyo
oligomenorrhea
osmotic pressures
over-commonly
Parsons table
participant as observer
Pesek, Sungai
pharyngospasmus
plot of land
polybutilate
post-neonatal mortality rate
posty
power-unit failure speed
purnell process
rachitic flat pelvis
rein in a horse
roller bandages
rotary actuator with two pistons
roughs
scarifying rotor
sculpture teeth
sexually attractive
shihab
simultaneous print-plot
spud can base
st-laurent
standing gage block
stream of bits
sun porch
super powder
telemetry acquisition
tensile shear test
text someone
thermomicroscopy
timing program
unpaid expense
warrant of arrest
washtenaw
wave of oscillation
yenikapi
zone transfer