My Barred Rock (2 1/2 yr. old) has been doing this cross between a sneeze & a cough for about 2 weekw. I've been adding the duramycin in her water for 10 days now. She's not getting any better. I always put raw apple cider vinegar in their water. Since Macie's been doing this sneeze thing, I've been putting in the duramycin. Eyes are not watery looking but she sounds wheezy congested. Not sure what else to do for her. I don't want the rest of the girls to get sick either of course. She still runs around with the rest and eats okay. Not the most agreeable chicken to be able to handle to be able to physically be able to give her med. At least not without some serious manhandling to hold her still anyway. Anything else I can try for her since this other antibiotic doesn't seem to be doing a thing for her?