So we bought 3 new little baby chicks from a trusted store that I've purchased from in the past. 2 days later I traded my silkie roosters (very sad, not allowed to have roosters) for 5 week old chicks....4 of them. I had all seven of them in a brooder together. This was on Sunday. Today (Tuesday) I noticed 2 of the older chicks had bubbling swollen eyes and sneezing. As soon as I noticed I separated the chicks. I have the 3 babies in a new clean space and the other 4 I gave back to the person I got them from. My question is what are the chances my new little babies contracted this disease? Will I know it? I have a strong healthy flock and I dont want to add these babies if they are now carrier's.