Home>News Center>China
       
 

China develops first live vaccine against bird flu
By Zhao Huanxin (China Daily)
Updated: 2005-12-26 05:27

Chinese scientists have produced the world's first live vaccine against bird flu and Newcastle disease - two killer infections for poultry, the Ministry of Agriculture has announced.

The recombinant bivalent vaccine, developed by the Harbin Veterinary Research Institute, will be a great boost to prevention and control of the two epidemics in China as well as in the world, Chief Veterinary Officer Jia Youling told a press conference in Beijing on Saturday.

In addition to injection, the vaccine can be administered orally, nasally or by spraying, said Jia, also chief of the ministry's Veterinary Bureau.

The mass-application techniques can not only significantly reduce labour costs, but also increase immunity among fowls, Jia said.

The shot will also be very inexpensive, as its production cost is only one-fifth of the inactivated vaccines available on the market, he said.

While most people are familiar with bird flu, Newcastle infections are endemic to many countries. The latter is also a highly-contagious viral disease affecting both domestic poultry and wild birds, experts said, adding that chickens are the most susceptible.

In September, Newcastle outbreaks killed at least 56,700 chicken on the Chinese mainland, according to the latest veterinary bulletin published by the ministry in October.

Chinese scientists at the Harbin institute in Northeast China's Heilongjiang Province spent four years to develop the powerful antidote to both Newcastle and bird flu, according to Jia.

Employing a technique called reverse genetics, the vaccine uses an attenuated Newcastle vaccine strain LaSota as a vector, according to Bu Zhigao, a chief scientist of the project.

Bu said experiments showed the vaccine can also protect mammals, such as mice, from bird flu.

Research and production techniques will provide reference for developing new vaccines for human infections of bird flu, Jia said.

The ministry expedited the examination and approval process of the new vaccine after the efficacy and security of the vaccine were satisfactorily proved.

Mass-production of the new vaccine was approved on December 23, and by the end of this month, 1 billion shots would have been produced, he said.

The vaccine will be used from the beginning of next year alongside other vaccines, he said.

Intensive vaccination efforts have paid dividends in China's fight against the fatal H5N1 strain of the bird flu virus.

By mid-December, 6.85 billion domestic birds had been vaccinated, including more than 5 billion since October, Jia said earlier.

As a result, the country has reported only one case of bird flu outbreak this month.

China reported six human cases of bird flu this year, involving two fatalities, and 31 outbreaks among poultry.

By last Thursday, 30 out of 31 outbreak sites had been lifted out of epidemic isolation, according to ministry sources.

Figures on the latest Newcastle disease toll were not immediately available.

In a related development, the State Forestry Administration said on Saturday that it would examine the performance of the monitoring stations for wild-animal epidemic diseases across the country.

The checks, lasting till February 20, will ensure that the 150 national stations and 402 provincial stations have contingency plans and adequate information reporting mechanism, according to deputy director Zhao Xuemin.

(China Daily 12/26/2005 page1)



Fire kills 5 in Northeast China
Aerobatics show in Hunan
Final rehearsal
  Today's Top News     Top China News
 

Australia, US, Japan praise China for Asia engagement

 

   
 

Banker: China doing its best on flexible yuan

 

   
 

Hopes high for oil pipeline deal

 

   
 

Possibilities of bird flu outbreaks reduced

 

   
 

Milosevic buried after emotional farewell

 

   
 

China considers trade contracts in India

 

   
  EU likely to impose tax on imports of Chinese shoes
   
  Bankers confident about future growth
   
  Curtain to be raised on Year of Russia
   
  Coal output set to reach record high of 2.5b tons
   
  WTO: China should reconsider currency plan
   
  China: Military buildup 'transparent'
   
 
  Go to Another Section  
 
 
  Story Tools  
   
Manufacturers, Exporters, Wholesalers - Global trade starts here.
Advertisement
         
主站蜘蛛池模板: 香港经典a毛片免费观看看| 亚洲中久无码永久在线观看同 | 被男按摩师添的好爽在线直播| 国产线路中文字幕| freeⅹxx69性欧美按摩| 成人在线综合网| 久久久亚洲欧洲日产国码二区| 最近免费中文在线视频| 亚洲午夜在线一区| 欧美激情视频二区| 亚洲高清偷拍一区二区三区| 精品免费国产一区二区三区| 国产91中文剧情在线观看| 青青草国产在线| 国产成人综合久久综合| 被吃奶跟添下面视频| 国产精品自在线拍国产手青青机版| 99在线精品视频| 天天狠天天透天干天天怕∴| 一本久久综合亚洲鲁鲁五月天 | 欧美成人高清WW| 亚洲精品www久久久久久| 玉蒲团之偷情宝典| 男人桶女人羞羞漫画全集| 国产成人18黄网站麻豆| 天天视频天天爽| 国产精品久久久久久久网站| 5g影院天天爽爽| 国产自国产自愉自愉免费24区| 99久久夜色精品国产网站| 天堂а√8在线最新版在线| jizz国产精品| 天天躁日日躁狠狠躁欧美老妇| а天堂中文地址在线| 嫩草影院精品视频在线观看| 一级成人理伦片| 性色av一区二区三区| 一级特黄aaa大片免费看| 成+人+黄+色+免费观看| 一本岛一区在线观看不卡| 岛国片在线观看|