日韩午夜精品视频,欧美私密网站,国产一区二区三区四区,国产主播一区二区三区四区

Our country has already successfully developed a vaccine for the prevention of highly pathogenic avian H5N1 influenza. The poultry at non-affected farms should be vaccinated in time to avoid being infected by bird flu.

(China.org.cn February 13, 2004)