On January 16, highly pathogenic avian influenza (H5N1) was confirmed at a layer farm in Dangjin, Chungnam, housing over 26,000 chickens. This case marks the first occurrence in a new region, raising nationwide alert among poultry farms and related authorities. The Central Accident Management Headquarters immediately convened a meeting to assess the situation and strengthen control measures. With seven cases already reported in January, concerns over further spread are mounting.
This is the 35th case of highly pathogenic avian influenza during the 2025/26 winter season. Regional breakdowns include 9 cases in Gyeonggi, 9 in Chungbuk, 6 in Chungnam, 3 in Jeonbuk, 7 in Jeonnam, and 1 in Gwangju. Additionally, 24 detections have been reported in wild birds, with 6 in Chungnam alone. Monthly figures show a sharp increase: 1 in September, 1 in October, 4 in November, 22 in December, and 7 in January. These statistics highlight the urgent need for robust biosecurity management.
Upon confirmation of the H5 antigen, the Central Accident Management Headquarters deployed an initial response team to control access, cull affected birds, and conduct epidemiological investigations. A 24-hour standstill order was issued for all layer farms, facilities, and vehicles in Chungnam, and thorough inspections are underway at 32 poultry farms within a 10km radius of the outbreak. Nationwide, all available disinfection resources are being mobilized for migratory bird habitats and farm access roads. Special inspections are also being conducted at farms that have changed poultry types and those under the same corporate entity.
Looking ahead, the authorities will extend one-on-one management for all large-scale layer farms and high-risk regions until January 31, and implement a nationwide intensive disinfection week with at least two daily disinfections. The Director of Mobile Biosecurity Policy urged strict adherence to movement restrictions, inspections, and disinfection, especially in newly affected regions. Poultry farmers nationwide are reminded to rigorously follow basic biosecurity protocols to prevent further outbreaks. These comprehensive measures are expected to play a crucial role in containing the spread and protecting the poultry industry.
The detection of H5N1 in a new region underscores the potential for cross-regional transmission of highly pathogenic avian influenza. Rapid response, nationwide disinfection, and movement restrictions are essential to minimize the risk of further spread. Targeted inspections of farms with changed poultry types and those under the same corporate entity help close potential biosecurity gaps. Continued data-driven risk assessment, on-site management, and proactive participation by poultry farmers will be key to effective avian influenza control.