More than likely, they have already been exposed to whatever she has. The testing might give you an idea of what to vaccinate new chicks for, since vaccines are for MG, bronchitis, and I'm not sure that you can easily buy one for coryza. Your state vet or local extension agent should be able to...
Actually most respiratory diseases including coryza and others are chronic diseases that are never cured. The symptoms may improve, but the disease can come back whenever the chicken is stressed, say during a molt or during the cold winter. They also remain carriers for life, even when not...
If it was bronchitis, it makes all chickens in the area carriers for up to a year. It is highly contagious spreading through the air, and would be more likely to spread than MG. MG and coryza remain in the environment on equipment and clothing, or most anything for only several days. I don't...
You can Google chicken necropsy Kansas, and there is a link for Kansas State University state poultry lab. Get some testing or a necropsy to make sure it is coryza. If it is only that, once all birds are gone, then you would be safe after waiting a few weeks. Keep in mind, that there could be...
I'm sorry. Coryza and MG both only remain on equipment and in the coop for 3 days or so, after the chickens are gone. It might benefit you to get one necropsied just to make sure of the diagnosis. At least speak to your state vet about what you are dealing with. Other diseases may remain in the...
I am so sorry that your flock is at risk. How many chickens do you have? There are many here on BYC that have gone through a similar experience, and you can read some of their threads by searching at the top of this page. I would not do anything drastic just yet. Your chickens seemed to have...
How are your birds doing today? You need to separate the sick birds, so just in case they have caught something, that it won't keep spreading. What symptoms are you seeing besides sleepiness? Did you cull the new birds or return them? Sulmet, oxytetracycline, or Tylan can be used to treat...
Are they having thick nasal drainage, coughing,eye drainage or swelling of the face or eyes? Coryza is a nasty respiratory disease, but fortunately, It only remains alive on surfaces for several days. I would give them a close exam to try and determine any symptoms they have. A sick bird can be...