China has developed a series of vaccines, including inactivated vaccine against H5N2 AI, in a bid to control the fatal bird flu, Jia Youling, chief veterinary officer said Friday at a press conference.

The application of these vaccines, which also include the recombined inactivated vaccine against H5N1, recombined flow pox vector live vaccine against H5, which are respectively for chicken, waterflow and broiler, has effectively reduced the cost of immunization and satisfied the need of various poultry, Jia noted.

He added that newly developed recombined Newcastle Disease vector live vaccine against AI is now under commercialization.

"This new vaccine is cheaper and easy to use," Jia said, noting that its application will greatly improve the result of immunization against AI.

The policy made by the Ministry of Agriculture to stamp out the poultry within three km around the affected spot has been well implemented nationwide, he said.

Moreover, the official said that the Ministry of Agriculture has made a timely report to the public upon any epidemic outbreaks based on the principle of "accuracy, openness and transparency."