PLEASE HELP! I have 11 chicks aged 7 to 17 weeks- first time chicken owner. Pretty sure it's coccidiosis as 4 weeks ago 1 chick died, saw bloody poop, then next chick VERY lethargic same as the one that died. Nursed her back with Corid mixed at rate of 2 tsp/gallon in eye dropper every 4 hours. Happy I saved her as I thought I was going to lose her. Immediately started treating all other chicks in their drinking water. Within a day or so blood no longer noticeable in poop so continued with dosing at same rate. By 6th or so day bloody poop reappeared. Continued same treatment and blood once again not noticeable until again 5th or 6th day slight blood started reappearing. Behavior normal except for a couple of poops being slightly mucous-y and slightly bloody. Most poop normal. Same pattern going on for 4 weeks. I never stopped the Corid. As soon as I thought things could go to maintenance mode I saw a couple more bloody poop (but not severe). What is going on? Does this mean another chick gets the disease each cycle? Or is it not coccidiosis? How long can I treat my flock before its done or the parasites get resistant? Getting frustrated and worried.