【英语时差8,16】流感--禽流感的爆发

There are some antiviral drugs that doctors may use to treat influenza¹. Each year, medical researchers work to develop vaccines³ to prevent the flu from infecting people. No one knows yet exactly how much protection the vaccine² provided people this flu season.As of last week, the W-H-O reported that influenza remained widespread in many countries in central and eastern Europe. Humans are not alone. Chickens and some other animals also get the flu. Avian influenza virus has jumped to some people. Researchers are concerned about what could happen if the virus mixes genetic⁴ material with human flu virus. The new virus might then spread from person to person. Scientists are especially concerned about Asia, where many human influenza viruses first appear. In the current outbreak, the W-H-O says Vietnam and South Korea have the first epidemics⁵ ever documented in those countries. The World Health Organization says influenza is thought to result in two-hundred-fifty-thousand to five-hundred-thousand deaths a year. Lost productivity⁶ adds up to great economic costs. So medical and agricultural officials say stopping the spread of influenza is one of their most important jobs year after year.

1 influenza   

n.流行性感冒，流感

参考例句：

• They took steps to prevent the spread of influenza.他们采取措施
• Influenza is an infectious disease.流感是一种传染病。

2 vaccine   

n.牛痘苗，疫苗；adj.牛痘的，疫苗的

参考例句：

• 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。

3 vaccines   

疫苗，痘苗( vaccine的名词复数 )

参考例句：

• 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。

4 genetic   

adj.遗传的，遗传学的

参考例句：

• It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
• Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。

5 epidemics   

n．流行病

参考例句：

• Reliance upon natural epidemics may be both time-consuming and misleading. 依靠天然的流行既浪费时间，又会引入歧途。
• The antibiotic epidemics usually start stop when the summer rainy season begins. 传染病通常会在夏天的雨季停止传播。

6 productivity   

n.生产力，生产率，多产

参考例句：

• Farmers are introducing in novations which increase the productivity.农民们正引进提高生产力的新方法。
• The workers try to put up productivity.工人设法提高生产率。