The reported surveillance is part of Norway’s contribution to the European Union Surveillance Programme for avian influenza and describes active surveillance of poultry. Active surveillance based on serological investigations to monitor avian influenza viruses (AIVs) in poultry in 2025 did not detect infection in poultry kept for commercial purposes in Norway.

This surveillance is routinely and systematically conducted, independent of the health status of the flocks. One outbreak of highly pathogenic avian influenza (HPAI) was detected in domestic birds in 2025 at a commercial poultry holding with 7,500 laying hens. The outbreak was identified through passive surveillance following sampling initiated due to clinical suspicion.