Recently had a terrible experience that I would like to share in order to prevent others from having the same. In our area, there are several individuals that purchase eggs from local breeders and hatch the eggs and sell the chicks. Unfortunately, I do not feel, based on my experience, that they are too particular as to where they purchase their eggs, or from whom. I purchased forty eight week old Rhode Island Reds, which at first appearance, seemed healthy, and within in two days, began loosing one, two, or three every day. Called in our Vet, and he said they had Cocci and prescribed medication, but advised to destroy the remaining flock. He felt that if any survived, they would become carriers and their eggs would carry the disease. By the time I agonized over destroying the remainder of the flock, we were down to eighteen out of the forty. Luckily, we always isolate new birds, otherwise this would have been completely disasterous. This by far, has been the hardest thing I have ever had to do, and do not wish it on anyone!!!!!