Highly Pathogenic Avian Influenza, a Major Cause of Egg Price Hikes: Advance Registration System to Strengthen Biosecurity at Layer Farms

South Korea confirmed its first highly pathogenic avian influenza outbreak of the winter at a layer farm in Yeoncheon on November 4, with an H5-positive case also found at a broiler-duck farm in Jangheung the following day. The government is tightening controls, including advance registration for people and vehicles entering layer farms, after 11.34 million laying hens were culled in the previous winter and egg prices subsequently surged.