what I have is a three week old chick that has been sneezing,raspy breathing for a week. I have been treating with Duramyacin 10(antibiotics) for a week with little change. I feed medicated feed free choice and it is on pine shavings! A lady I talk to about my chicks said either its CSD(Chronic Sac disease) or phenumonia(sp?) does anyone know the symptoms of CSD and can it ever be cured and is it transferable to humans and should I humanely euthanize the said chick