He can't see. How do I isolate him? If I move him how will he react since the environment will be different? How will this affect the others? What about me? I need to feed and water the chicks in the brooder. How do I keep it separate?
Try a dog crate if you can
you dont want the others catching it
You are ok, NOT transmissible to humans, most cases
You may want to medicate the others as well, or cull (depends on what approach you take)
He/others if they have it, will be carriers for life, they can pass it to others even if healed up and showing no signs.