I bought 5 Doms three weeks ago. The first week, I lost a chick. The second week, another one but I had followed some advice and started unfiltered ACV in their water a few days before. They had always been on medicated starter also. I suspected cocci but didn't see any fecal signs. They were lathargic, fluffed and eventually laying flat, slow breathing. Now, my remaining three are active, growing, eating little birds. Are they beyond a cocci risk or should I keep worrying about it?