We recently had to cull a coughing hen, Sometimes sounded like a sneeze. She had it for about two weeks off and on and then quit eating. The problem is she was one of 14, and two days ago one other one coughed one time I have separated her and she has not coughed or sneezed in The last two days. I’ve been treating all of them including her with Vetrx and Diced up garlic clove in their water. No one is coughing or sneezing including the separated hen. We do not have a farm vet in our area, my dog vet has no idea. How long should I keep her separate from the crowd if she’s no longer sneezing or coughing, again she only did it one time before we culled the other chicken, I’m hoping this is nothing serious I don’t know afraid I will lose all my girls.