this makes me want to get all my chickens ( or most, since i free range most of them) blood tested for diseases, i dont know how i could kill all my birds though...... can it become dormant in a flock? and is it unsafe to eat an infected bird?
and PC, i feel horrible for you, i am sorry and im sure your chickens would forgive you for what you had to do, and thank you for giving them a proper burrial.