I had an outbreak of cocci a while back. I have put most of the chickens back into the flock that looked healthy. About 50% died that got it. I now have 2 birds that are dragging on forever with symptoms of runny smelly poop, and I am afraid to put them with the rest of the birds. One of them has practically grown up in the hospital ward. She is 5 months old now, and has been in there for months. How do I know if they can go with the others? They are very healthy acting.