We have a situation that is not getting any better. It started almost a week ago. So far we have lost 8 birds to this. We have the coughing and the sneezing. Naturally, we have a lot of shaking of heads to dislodge the congestion. When some is released, it is yellow as well as lots of yellow, sticky eye drainage. One of my RIW hens who didn't make it showed that her ears were also swollen (which I would assume was an ear infection). We have been cleaning the coop out frequently and continuing to use the DE. The waterers are cleaned out daily with bleach water and contain water that has Teramyacin in it. Tylan 50mg. IM given to all birds daily. We have watched diligently over our flock. Does anyone have any suggestions or other questions that could help us get this under control. Our farm vet is in Hawaii at this time and no other vets will even see our chickens. At this time it looks like it's all up to us.