The previous case was detected at a local pig farm in late August.
Authorities are investigating the affected farm and have implemented emergency quarantine measures to prevent ASF from spreading to nearby pig farms. Disinfection operations will be conducted at 233 pig farms in Hwacheon, and neighboring cities and counties, the ministry said.
The ministry noted that the culling due to the outbreak at the Hwacheon farm accounts for only 0.03 percent of the country's total pig population, indicating a minimal impact on the local pork market.
ASF does not affect humans but is deadly to pigs. There is currently no vaccine or cure for the disease.
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