My 4 week old chicks have bloody stool. I have lost 3 chicks yesterday. I believe that they have cocci. My vet did not have amprol, so I am treating them with Sulfadimethoxine in the water. This is the second day of treatment. When should I see the bloody stool stop? Has anyone purchased the spray on vaccine for cocci, if so where can I purchase it? Do I need to worry about my chickens that are older getting this from the babies? How far apart do I need to keep the infected babies from the older chickens? I am so stressed out. I cant stand to see my baby's sick. Thanks for the help!