久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

您現在的位置: 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)

 
英語點津版權說明:凡注明來源為“英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
相關文章 Related Story
 
 
 
本頻道最新推薦
 
新加坡發起全民洗手運動 防止疾病傳播
Soho 倫敦蘇活區
以色列建議豬流感改稱墨西哥流感
畢業生可能遭遇的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,橙子用英文怎么區分?
看Gossip Girl學英語
端午節怎么翻譯?

 

久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    久久久久久久久久久久久国产| 免费在线观看亚洲视频 | 国产欧美高清在线| 日韩 欧美 自拍| 中文字幕无码不卡免费视频| 亚洲 欧洲 日韩| 在线观看的毛片| 国产中文字幕二区| 国产香蕉一区二区三区| 国产精品视频分类| 狠狠干 狠狠操| 喜爱夜蒲2在线| 激情五月婷婷基地| 欧美精品无码一区二区三区| 99在线免费视频观看| 国产婷婷一区二区三区| 欧美与动交zoz0z| 午夜剧场高清版免费观看| 少妇高潮喷水在线观看| 男女爱爱视频网站| 亚洲妇熟xx妇色黄蜜桃| jizz欧美激情18| 97成人在线观看视频| 人人妻人人澡人人爽欧美一区双 | 久久久久免费看黄a片app| 中文字幕55页| 一区二区在线免费看| 五月天婷婷激情视频| www黄色av| 欧美亚洲国产成人| 天天夜碰日日摸日日澡性色av| www.18av.com| 黄色一级大片免费| 乱子伦一区二区| 91网址在线观看精品| 91视频这里只有精品| 69久久久久久| 一区二区三区视频网| 免费国产成人av| 北条麻妃在线视频| 别急慢慢来1978如如2| 人妻内射一区二区在线视频| 国产精品沙发午睡系列| 亚洲自偷自拍熟女另类| 国产在线青青草| 亚洲国产精品久久久久爰色欲| 成人在线观看你懂的| av高清在线免费观看| 很污的网站在线观看| 青青青青草视频| heyzo国产| 欧美伦理视频在线观看| 好男人www社区| 亚洲精品久久久久久宅男| 亚洲综合av在线播放| 九九久久久久久| 天天想你在线观看完整版电影免费| 中国女人做爰视频| 日韩欧美中文视频| 欧美少妇一级片| 亚洲啊啊啊啊啊| 人妻av中文系列| 成人在线观看黄| 亚洲天堂2018av| 不卡中文字幕在线| 精品少妇人欧美激情在线观看| 免费 成 人 黄 色| 黄色片在线免费| www.桃色.com| 久久亚洲精品无码va白人极品| 日韩小视频在线播放| 国产视频一区二区三区在线播放| 欧美婷婷精品激情| 亚洲国产精品女人| 久久久久久www| 美女喷白浆视频| 欧美日韩在线免费观看视频| 妺妺窝人体色www看人体| 男人天堂1024| 亚洲欧美手机在线| 免费人成自慰网站| 久久婷婷国产91天堂综合精品| 免费在线观看污网站| 久久精品xxx| www.激情小说.com| 国产在线拍揄自揄拍无码| 久久久久久久久久久视频| 色戒在线免费观看| 日本a级片在线观看| 女人另类性混交zo| 国产手机视频在线观看| 免费在线激情视频| 在线成人免费av| 国产日韩一区二区在线| 波多野结衣在线免费观看| 欧美一级欧美一级| theporn国产精品| 精品视频免费在线播放| 在线观看日本www| 又粗又黑又大的吊av| 黄色三级视频在线播放| 色欲av无码一区二区人妻| 日韩av福利在线观看| 欧洲av无码放荡人妇网站| 手机在线观看日韩av| 成年人视频在线免费| 女人床在线观看| 91视频最新入口| 久久99999| 免费观看国产精品视频| 日韩av加勒比| 欧美黄色一级片视频| 777久久精品一区二区三区无码| 97公开免费视频| 少妇人妻大乳在线视频| 五月天六月丁香| 妺妺窝人体色www在线观看| 欧美黑人在线观看| 日本福利视频导航| 亚洲狼人综合干| 免费看一级大黄情大片| 国产一二三四区在线观看| 国产精品久久久毛片| 欧美日韩二三区| 国产一区 在线播放| 伊人五月天婷婷| 污污网站免费看| 能看的毛片网站| 国产91对白刺激露脸在线观看| 成人午夜视频免费观看| 欧美丝袜在线观看| 国产精品拍拍拍| 免费裸体美女网站| 国产96在线 | 亚洲| 成人手机在线播放| 污视频在线观看免费网站| 色www免费视频| 中文字幕第21页| 熟妇人妻va精品中文字幕| 自慰无码一区二区三区| 男人天堂a在线| 无码熟妇人妻av在线电影| 日本丰满大乳奶| 在线免费观看av网| 天堂av8在线| 三日本三级少妇三级99| 五月天av在线播放| 91福利国产成人精品播放| 熟女少妇精品一区二区| www.欧美日本| 成人羞羞国产免费网站| 欧美网站免费观看| 日韩视频第二页| 亚洲欧洲日产国码无码久久99 | 国产成人黄色网址| 男女污污的视频| 日本男人操女人| wwwwxxxx日韩| 高清av免费看| 亚洲精品免费一区亚洲精品免费精品一区| 日韩国产小视频| 国产成人在线小视频| 国产va亚洲va在线va| 黄色一级视频在线播放| 久久久亚洲精品无码| 男女高潮又爽又黄又无遮挡| 国产l精品国产亚洲区久久| 日韩精品视频一区二区在线观看| 欧美日韩在线视频一区二区三区| 欧美色图另类小说| 无码内射中文字幕岛国片| 中文字幕在线导航| www.成人黄色| 最新av网址在线观看| 欧美黑人在线观看| 无码人妻丰满熟妇区96| 日韩在线第三页| 天堂av2020| 激情五月六月婷婷| 欧美成人一区二区在线观看| 久久精品网站视频| 精品综合久久久久| 天天想你在线观看完整版电影免费| 国产精品久久久久久久乖乖| 内射国产内射夫妻免费频道| 女性隐私黄www网站视频| 手机版av在线| 日韩成人手机在线| 北条麻妃av高潮尖叫在线观看| 182午夜在线观看| 国产一区二区三区播放| 国产美女无遮挡网站| 岛国av在线免费| 国产成人一二三区| 免费在线观看的av网站| 午夜视频在线观| 亚洲熟妇av日韩熟妇在线| 在线能看的av网站| 国产精品一色哟哟| 在线免费视频一区|