Brazil finds new strain of H1N1 virus_阅读理解

Brazil finds new strain of H1N1 virus

文章来源：文章作者：发布时间：2009-07-02 06:12 字体： [大中小]　进入论坛

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Brazilian scientists have identified a new strain of the H1N1 virus after examining samples from a patient in Sao Paulo, their institute said Tuesday.

The variant¹ has been called A/Sao Paulo/1454/H1N1 by the Adolfo Lutz Bacteriological Institute, which compared it with samples of the A(H1N1) flu from California.

The genetic² sequence of the new sub-type of the H1N1 virus was isolated³ by a virology team, the institute said in a statement.

The mutation⁴ comprised of alterations⁵ in the Hemagglutinin protein which allows the virus to infect new hosts, it said.

It was not yet known whether the new strain was more aggressive than the current A(H1N1) virus which has been declared pandemic by the World Health Organization.

The genetic make-up of the H1N1 virus is important for scientists.

Pharmaceutical⁶ companies are working to mass produce a vaccine⁷ against the current A(H1N1) flu.

There are fears though that it could mutate into a deadly strain, much in the same way as the 1918 Spanish flu -- also an A(H1N1) virus type -- did when it killed tens of millions around the planet.

According to WHO, 36,000 people in 76 countries have been infected with the H1N1 virus, causing 163 deaths.

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1 variant
adj.不同的，变异的；n.变体，异体
参考例句：
We give professional suggestions according to variant tanning stages for each customer.我们针对每位顾客不同的日晒阶段，提供强度适合的晒黑建议。 In a variant of this approach,the tests are data- driven.这个方法的一个变种，是数据驱动的测试。

2 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。

3 isolated
adj.与世隔绝的
参考例句：
His bad behaviour was just an isolated incident. 他的不良行为只是个别事件。 Patients with the disease should be isolated. 这种病的患者应予以隔离。

4 mutation
n.变化，变异，转变
参考例句：
People who have this mutation need less sleep than others.有这种突变的人需要的睡眠比其他人少。 So far the discussion has centered entirely around mutation in the strict sense.到目前为止，严格来讲，讨论完全集中于围绕突变问题上。

5 alterations
n.改动( alteration的名词复数 )；更改；变化；改变
参考例句：
Any alterations should be written in neatly to the left side. 改动部分应书写清晰，插在正文的左侧。来自《简明英汉词典》 Gene mutations are alterations in the DNA code. 基因突变是指DNA 密码的改变。来自《简明英汉词典》

6 pharmaceutical
adj.药学的，药物的；药用的，药剂师的
参考例句：
She has donated money to establish a pharmaceutical laboratory.她捐款成立了一个药剂实验室。 We are engaged in a legal tussle with a large pharmaceutical company.我们正同一家大制药公司闹法律纠纷。

7 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。

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