France: An avian influenza outbreak in a vaccinated duck flock
French animal health authorities have identified an outbreak of avian influenza at a duck farm in Notre Dame de Riez. The affected birds had received vaccination in November 2023 as part of France's initial deployment of the poultry vaccine. The vaccine employed in this case is developed by Boehringer Ingelheim, utilizing Baculovirus Expression System Technology. This vaccine is a clade 2.3.2 H5-recombinant baculovirus vaccine. Confirmation of the outbreak's results came on January 2, prompting the culling of all 8,700 ducks on the farm.In response to new scientific findings, France's agriculture ministry mandated a third vaccine dose for farmed ducks in high-risk regions in early December. It remains uncertain, however, whether the ducks on the affected farm had received this additional dose.
