www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

   

Bird flu vaccine for humans approved

By Shan Juan (China Daily)
Updated: 2008-04-03 07:18

A homegrown vaccine for humans against the H5N1 influenza virus, commonly known as bird flu, was Wednesday approved by the State Food and Drug Administration (SFDA).

Worldwide, only the United States and the European Union have approved human vaccines against bird flu.

The SFDA approval follows two rounds of clinical tests involving 500 volunteers from 2005 to 2007.

The vaccine will enhance the country's capability to protect people from an influenza pandemic, said SFDA spokeswoman Yan Jiangying.

"Almost all known human bird-flu cases are caused by the H5N1 strain," said Yin Hongzhang, head of the biological product department of the SFDA.

But given the constant mutation of the bird-flu virus, it might be another strain instead that could trigger a pandemic, he added.

Yin Weidong, CEO of Beijing-based Sinovac Biotech and the vaccine maker, said in case of a pandemic, the WHO would offer the identified viral strain in three weeks for the producer to incorporate into the vaccine.

The production time for a vaccine against a new strain would take about four months, he said, adding that it takes two months for the H5N1 virus.

The vaccine-induced immunity lasts a year, similar to that of a seasonal flu shot, he added.

The company can churn out at least 20 million doses of the trivalent vaccines, Xinhua News Agency reported earlier.

Yan noted that the company will not sell the vaccine commercially.

"It will be purchased by the government for inclusion in the national strategic stockpile."

She said the SFDA streamlined approval procedures for the vaccine.

"It's also part of the task to secure an outbreak-free Beijing Olympics," she added.

Some 373 people worldwide have been infected with the virus since 2003, of whom 236 have died, according to the WHO. China has recorded 30 infections and 20 deaths.

To date, H5N1 influenza has remained primarily an animal disease, but experts fear the virus could acquire the ability for sustained transmission among humans.



Top China News  
Today's Top News  
Most Commented/Read Stories in 48 Hours
主站蜘蛛池模板: 99在线免费| 91理论片午午伦夜理片久久 | 天天拍拍夜夜出水 | 狠狠色丁香婷婷综合小时婷婷 | 国产一级特黄特色aa毛片 | 一区二区三区四区在线播放 | 日韩一品在线播放视频一品免费 | 亚州在线播放 | 一级片免费观看 | 免费看的一级片 | 国内自拍网红在线综合 | 99爱在线视频 | 国产日韩精品一区在线不卡 | 国产一区在线看 | 成人亚洲欧美日韩在线 | 亚洲综合免费视频 | 欧美日韩一级大片 | 亚洲国产精品一区二区三区在线观看 | 久久精品a一国产成人免费网站 | 欧美人成毛片在线播放 | 亚洲欧洲小视频 | 国内精自品线一区91 | 国产亚洲精品久久麻豆 | 免费观看一区二区 | 精品久久久久久久久久久久久久久 | 久久久久久毛片免费播放 | 欧美三级日韩 | 国产91精品在线 | 色丁香久久 | 久久久日韩精品国产成人 | 国产精品成人免费视频 | 偷自拍| 日本久久香蕉一本一道 | 不卡一区二区在线 | 欧美一区a| 黄色三级网站 | 日本波多野结衣在线 | 久久精品中文字幕不卡一二区 | 草草久久97超级碰碰碰免费 | 国产福利不卡一区二区三区 | 91精品一区二区三区在线观看 |