So I bought a bird sick and quarantined him and put him with my birds when I thought he was better. Well, he relapsed. This was last Saturday. I've been viciously treating him with Colloidal Silver twice a day every day since last Wednesday. Cleaning his nose out, shooting water up his nostrils to wash the excess snot out, monitoring his swelling around his face daily. He was kept away from the others after that with a heat lamp. He Had -Wattle and throat swelling (no swollen eyes) -Smelly yellow discharge from nose that clogged daily -Frequent sneezing He was in contact with all of my other chickens. I just knew I had Infectious Coryza. BUT NONE of my other chickens have ANY symptoms. Two were sick BEFORE I got him, with respiratory infections, and they are still sneezing. After a bath daily I'd go feed, water, collect eggs from and look over ALL of my other chickens before going and taking care of him. No symptoms. He even drew blood on all three of my other roosters. None are sick. Was I dealing with Infectious Coryza or what else could it have been? He is nearly 100% and I want to know if I can put him back with the flock I bought him for soon. It's been almost 10 days since he had first contact with the flock.