Ok that is really worrying.. sorry to hear that. what vaccine did you use? did you keep it refrigerated?Feeling sad and frustrated as hell right now. Why? Newcastle disease... Out of 21 chickens, the dog killed one last week, 4 hens and 2 chicks died and 8 more chickens are ill. Vaccinated them, but it doesn't seem to have helped or they already had the disease but didn't show any signs yet.