A poultry farm in South Korea has been hit by the bird flu, with some 6,000 chickens suspected to have died from the bird flu virus.
The H5N1 strain of avian influenza was discovered in the south west part of the country lying on a path for migratory birds.
Between December 2003 and March 2004, about 400,000 poultry at South Korean farms were infected by the bird flu virus.
During that outbreak, the country culled 5.3 million birds and was forced to spend huge amounts to stop the spread of the disease.
Subsequent testing in the United States indicated at least nine South Korean workers involved in the mass cull had been infected.
But none of them developed any major illnesses from the bird flu.
Since the virus re-emerged in Asia in 2003, outbreaks have been confirmed in around 50 countries and territories.
Meanwhile, the World Health Organisation said that since November 13 there had been 258 cases of human infection of the H5N1 strain since 2003, killing 153 people.