I have 15 standard size 3 week old chicks, one died yesterday after looking very lethargic the day before. I havent seen anymore looking lethargic but I did spot some bloody poop in th pen today. I bought some Corid and some nutritional supplement. Ive been told to add 1 tsp per gallon of water of the Corid. I have a few questions......should I also add the supplement to the water at the same time as the corid? Can adult birds catch this from them and should i add the Corid to their water as well even though they show no signs of infection? (The adult bantam birds are in a pen in the same barn as the chicks.) Also, if I got chicks from a private breeder that was feeding medicated food to prevent or vaccinate for Cocci and then put them with my chicks which were not taking the same food.....could my chicks have caught it from the new ones? I ask this because when you vaccinate for something, that desease is usually live in the stool and when someone comes in contact with the infected stool they can catch the desease if they havent been vaccinated. I am not sure if this is the same for chickens or not but would love the info.