New cases were confirmed on a pig farm and two cattle farms in Andong, about 180 miles southeast of Seoul in North Gyeongsang province, Yonhap news agency reported. A total of 33 diseased animals on 20 farms have been found, 23 of them in Andong.
There have been three outbreaks of the disease this year after several years without any.
Authorities have begun taking more draconian measures to prevent the spread of foot and mouth. This week, the Ministry of Agriculture ordered the destruction of 20,191 pigs at a farm in Boryeong, South Chungcheong province, west of Andong, because a veterinarian from Andong visited there without changing his shoes.