Birdflu is the common spreading disease now a days in the world.
3000 chickens died in Japan at a city called Hyuga
in the country's third outbreak of bird flu.
For this
disease, Scientist have started their work to create a vaccinnation for humans and they first started to experiment on
animals.
A vaccine which could protect people against a pandemic strain of bird flu has been tested successfully on animals.
The drug, which will now have human trials, could be ready for mass production in two years.