All my chicks were purchased from Cal Ranch Store, a chain farm supply store. The store had several different breeds of chickens (all chicks). They also had at one point a breed of ducks, and a breed of turkeys. However, each breed of chicks, turkeys, ducks were in same breed enclosures so none of them shared water or food except for chicks of the same breed. I've cleaned my food and water dishes. Iwill cchange the bedding tomorrow but ill be sure to shake out as much dust as possible from the bedding before putting it in the coop. Any other suggestions? I am using a medication (forgot the name but its yellow and stinks when dissolved one Ayer) in their water just in case. I am hoping for the best. My biggest question is will the eggs produced by my hens be safe for human consumption if they are in fact diseased or have respiratory issues? Thenk you!