An emergency quarantine lockdown to prevent the spread of bird flu in the country was lifted on Monday evening.
Disease prevention authorities put three provinces in lockdown for 12 hours on Monday while they sterilized all potential sources of avian influenza.
That also included prohibiting the movement of animals, people and vehicles from farms.
However, despite these efforts, a suspected bird flu case was reported in Chungcheongbuk-do Province, the first in the central province since the first AI case was confirmed on January 16th.
A total of 14 ducks have died at a farm in the province since yesterday.
The highly pathogenic H5N8 strain was confirmed in more ducks over the weekend, including on a farm in Korea's southern Jeollanam-do Province.
Fanning fears is that AI was found in chickens for the first time in Buyeo, Chungcheongnam-do Province.
That is especially concerning to authorities because chickens are more vulnerable to the virus, and greatly outnumber ducks in the country.
So far, more than half-a-million birds have been culled, with another 2.2 million expected to be slaughtered over the coming days.
Shin Se-min, Arirang News.