Authorities are investigating an additional case of bird flu detected in South Korea's central region.
The Ministry of Agriculture, Food and Rural Affairs said Monday it detected the H5N8 strain of avian influenza (AI) at a duck farm in Jincheon, North Chungcheong Province. The ministry added it is conducting tests to determine whether it is a highly pathogenic strain.
The ministry also said chickens suspected of carrying the disease in Busan and North Jeolla Province over the holiday were likely just suffering from dehydration and respiratory illnesses.
It said although the virus has not yet spread to other farms in Jincheon, it will continue strong quarantine measures for vehicles coming and going from area poultry farms.
So far, avian influenza has been detected at 39 farms across the country, resulting in the culling of around two-point-six million ducks and chickens at 115 farms.
Eighteen of roughly 170 migratory birds found dead around South Korea have tested positive for the highly pathogenic strain of the disease.