The Dutch government has announced the effectiveness of avian influenza vaccines for laying hens, as confirmed by tests conducted by Wageningen Bioveterinary Research last year. The vaccines, produced by Ceva Animal Health and Boehringer Ingelheim, have shown to provide protection against the virus eight weeks after vaccination. The government plans to proceed with large-scale vaccination of poultry, conducting more trials over the next year and half to evaluate the vaccines' effectiveness throughout the laying period. The vaccination approach aims to balance animal and public health, animal welfare, and trade considerations, as concerns about bird flu's transmission to mammals and humans continue to rise globally.