VOA慢速英语2010年-Development Report - New Treatment for

This is the VOA Special English Development Report.

The World Health Organization is using a new combination of drugs to treat human African trypanosomiasis disease, also known as sleeping sickness. The drugs nifurtimox an eflornithine will be given out in Uganda and the Democratic Republic of Congo.

Officials from the Drugs for Neglected Diseases Initiative say the new treatment has fewer side effects. It is also more effective and less costly¹ than the drugs traditionally used. In addition, the new treatment reduces the number of injections needed. And it shortens the amount of time patients must spend in the hospital.

Sleeping sickness threatens millions of people in thirty-six countries in Africa. Most live in poor rural areas. The disease is caused by the trypanosoma parasite². It is spread to humans through the bite of infected tsetse flies.

Common signs of sleeping sickness include fever, headaches, extreme tiredness and pain in the muscles and joints³. Early identification of the disease may be difficult because many infected people do not show any immediate⁴ symptoms.

Over time, the parasites⁵ invade the central nervous system. The disease causes sleep disorders⁶, mental confusion, personality changes, speech problems, seizures⁷ and coma⁸. If left untreated, sleeping sickness kills.

The World Health Organization estimates that about sixty thousand people are currently infected with the disease. It develops in two different forms. Trypanosoma gambiense is responsible for ninety percent of the reported cases of sleeping sickness. People infected with this form may develop the disease over many years without any major symptoms. The disease develops more quickly over a few weeks or months in people infected with trypanosoma rhodesiense.

Until now the drug melarsoprol was used to treat patients in the advanced stage of sleeping sickness.

But the drug requires many painful injections several times a day for several weeks. It also causes bad side effects, some of which can be deadly.

In Uganda, a new study has confirmed earlier research linking the spread of sleeping sickness to infected farm animals. The writers of the study have called for stronger rules requiring cattle to be treated before being sold at market. The study was published in the Public Library of Science.

And that's the VOA Special English Development Report, written by June Simms. I'm Steve Ember.

1 costly   

adj.昂贵的，价值高的，豪华的

参考例句：

• It must be very costly to keep up a house like this.维修这么一幢房子一定很昂贵。
• This dictionary is very useful,only it is a bit costly.这本词典很有用，左不过贵了些。

2 parasite   

n.寄生虫；寄生菌；食客

参考例句：

• 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。

3 joints   

接头( joint的名词复数 )； 关节； 公共场所（尤指价格低廉的饮食和娱乐场所） （非正式）； 一块烤肉 （英式英语）

参考例句：

• Expansion joints of various kinds are fitted on gas mains. 各种各样的伸缩接头被安装在煤气的总管道上了。
• Expansion joints of various kinds are fitted on steam pipes. 各种各样的伸缩接头被安装在蒸气管道上了。

4 immediate   

adj.立即的；直接的，最接近的；紧靠的

参考例句：

• His immediate neighbours felt it their duty to call.他的近邻认为他们有责任去拜访。
• We declared ourselves for the immediate convocation of the meeting.我们主张立即召开这个会议。

5 parasites   

寄生物( parasite的名词复数 )； 靠他人为生的人； 诸虫

参考例句：

• 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。

6 disorders   

n.混乱( disorder的名词复数 )；凌乱；骚乱；（身心、机能）失调

参考例句：

• Reports of anorexia and other eating disorders are on the increase. 据报告，厌食症和其他饮食方面的功能紊乱发生率正在不断增长。 来自《简明英汉词典》
• The announcement led to violent civil disorders. 这项宣布引起剧烈的骚乱。 来自《简明英汉词典》

7 seizures   

n.起获( seizure的名词复数 )；没收；充公；起获的赃物

参考例句：

• Seizures of illicit drugs have increased by 30% this year. 今年违禁药品的扣押增长了30%。 来自《简明英汉词典》
• Other causes of unconsciousness predisposing to aspiration lung abscess are convulsive seizures. 造成吸入性肺脓肿昏迷的其他原因，有惊厥发作。 来自辞典例句

8 coma   

n.昏迷，昏迷状态

参考例句：

• The patient rallied from the coma.病人从昏迷中苏醒过来。
• She went into a coma after swallowing a whole bottle of sleeping pills.她吃了一整瓶安眠药后就昏迷过去了。