A bird flu virus of the H5N1 subtype has been identified on a duck farm in Hajdúnánás, Hungary, leading to the authorities starting to cull the stock and establish protective and surveillance zones. An investigation is underway to determine the cause of the outbreak, highlighting the importance of adhering to epidemiological regulations for poultry farmers in high-risk areas, including keeping poultry indoors, storing feed and materials in closed places, and maintaining strict hygiene protocols. It is crucial to monitor people and vehicle traffic, as well as disinfect feed transport vehicles, to protect animals and prevent the spread of infection.