Over half of the ducks vaccinated against avian influenza in France are still not fully protected against the virus.
A model from France’s agency for human and animal health, Anses, shows that only 40-45% of ducks achieve full protection from a complete vaccination scheme. The rest are either partially protected (due to ongoing vaccination) or have waning immunity.
In fact, Anses’ experimental est...
The strongest version of this narrative presents France’s duck vaccination program as a necessary, science-backed response to recurrent avian influenza outbreaks, with Anses providing rigorous modeling to optimize protection. The program’s scale—51 million doses covering 95% of targeted ducks—demonstrates a serious commitment to biosecurity, even as the data reveals limitations in vaccine efficacy. The experts’ transparency about partial protection and the need for booster doses lends credibilit...