South Korea has confirmed the first outbreak of bird flu since May 2008 and more than 100,000 birds have been slaughtered as authorities try to contain its spread.
Health authorities have stepped up inspections of wild birds and urged poultry businesses to take extra precautions such as erecting nets around their farms to keep wild birds out.
South Korea has been hit by avian influenza three times, with the last outbreak in April 2008.
Meanwhile, the country is experiencing a major outbreak of foot and mouth disease. More than 660,000 cattle, pigs and other cloven-hoofed animals have been or will be soon slaughtered, with related losses estimated at more than 400 billion won (350 million dollars).