Our 5yr old EE hen attempted to lay a soft shelled egg 5 weeks ago. She had a prolapsed vent. My husband pulled out what he could of the broken egg and pushed her vent back in. She has appeared fine since. Two days ago I found a lash egg in her favorite nest box. I assume it was her...... this morning I saw lots of clear liquid come out of her bum and then clear liquid come out of her throat. This is our beloved Fluff, my children's favorite hen. To add to the stress, a couple birds are sneezing again. (Vet assumes MG, almost 2 yrs in our closed flock) Should I use Tylan 200, Duramycin 72-200, or Denaguard? On Fluff or the whole flock?? Please provide suggestions!