日本高清色视频在线视频在,国产香蕉97碰碰视频碰碰看,丰满少妇av无码区,精品无码专区在线,久久无码专区免费看,四虎欧美精品永久地址99,亚洲色无码一区二区三区

您現(xiàn)在的位置: Language Tips> Audio & Video> Normal Speed News  
   
 





 
Researchers race to develop swine flu vaccine
[ 2009-04-29 10:37 ]

Download

As public health officials around the world try to contain the spread of the swine flu, scientists are working overtime to develop a vaccine against this new strain of the virus.

According to molecular biologist Andrew Pekosz of The Johns Hopkins University School of Public Health, little is known about the H1N1 swine flu virus that has emerged in several countries. The speed of the swine flu expansion from country to country has caused alarm that the disease could become an international pandemic.

The virus is a type A influenza virus that causes mild to severe respiratory symptoms that, if bad enough, can result in death. The virus is spread easily from person to person.

Researchers race to develop swine flu vaccine

Pekosz says no one has immunity against the virus, which is made up of bits of genetic material from pigs, humans and birds.

"It's a new virus whose biological properties we're still not sure of. And we worry about with influenza, there' been documented, it's been documented that different strains have a differential ability to cause disease in animals and in humans. And right now, we're getting mixed signals about this virus' ability to cause disease."

But the good news is that molecular analysis of the swine virus shows it is the same pathogen all over the world, according to Kathy Neuzil of PATH, an international non-profit organization that promotes vaccine development.

"So we're not seeing a changing virus; we're seeing the same virus being isolated in Mexico and various places in the United States," said Kathy Neuzil.

Neuzil, who heads PATH's Influenza Vaccine Project, says that because the swine flu virus does not appear to be mutating, it should be easier to develop a vaccine.

She says the U.S. Centers for Disease Control and Prevention, or CDC, has started preparing swine flu virus strains that can be sent to drug companies for vaccine production. Experts say the challenge now will be trying to decide how to distribute a swine flu vaccine. Since the seasonal flu virus vaccine that is in production for the coming flu season is not effective against H1N1, Andrew Pekosz of The Johns Hopkins University says public health officials will need to decide whether to incorporate it into the existing vaccine or make a stand alone inoculation.

"So if we're going to make an influenza virus vaccine that will be used during the next flu season, we have to make a decision as to how much effort we will going to be put toward that relatively soon. Otherwise, we will just simply run out of time to generate enough of the vaccine to really help us."

The World Health Organization and the CDC are working with drug companies to manufacture a vaccine.

vaccine:any preparation used as a preventive inoculation to confer immunity against a specific disease(疫苗)

pandemic:(of a disease) prevalent throughout an entire country, continent, or the whole world; epidemic over a large area.(大流行的,全國、全世界流行的)

respiratory: 呼吸道的

inoculation:接種,注射疫苗

Related stories:

WHO raises swine flu pandemic alert to level 4

WHO, US declare swine flu emergencies

Scientists take step in search of universal flu vaccine

(Source: VOA 英語點津編輯)

 
英語點津版權(quán)說明:凡注明來源為“英語點津:XXX(署名)”的原創(chuàng)作品,除與中國日報網(wǎng)簽署英語點津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請與010-84883631聯(lián)系;凡本網(wǎng)注明“來源:XXX(非英語點津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請與稿件來源方聯(lián)系,如產(chǎn)生任何問題與本網(wǎng)無關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請?zhí)峁┌鏅?quán)證明,以便盡快刪除。
相關(guān)文章 Related Story
 
 
 
本頻道最新推薦
 
新加坡發(fā)起全民洗手運動 防止疾病傳播
Soho 倫敦蘇活區(qū)
以色列建議豬流感改稱墨西哥流感
畢業(yè)生可能遭遇的quarterlife crisis
Walking in the US first lady's shoes
翻吧推薦
 
論壇熱貼
 
為什么叫蹦的
別亂扔垃圾。怎么譯這個亂字呀?
橘子,橙子用英文怎么區(qū)分?
看Gossip Girl學(xué)英語
端午節(jié)怎么翻譯?

 

<strong id="xdwva"><div id="xdwva"></div></strong>
<label id="xdwva"></label>

<thead id="xdwva"></thead>
    <label id="xdwva"></label>

  1. 日本高清色视频在线视频在,国产香蕉97碰碰视频碰碰看,丰满少妇av无码区,精品无码专区在线,久久无码专区免费看,四虎欧美精品永久地址99,亚洲色无码一区二区三区