I had a problem with coccidiosis in young calves in the spring for a couple years. I started watching closer for it around that time of year to catch and treat earlier. Also I treat water tanks with Corid in March which seemed to lessen the problem. Fast forward, I had 8 weaned heifers get sick last weekend. They are in a group of 25. It seemed to come on real quick. I couldn't get the vet out so I sent fecal samples to him. Coccidiosis was the diognosis. 3 went down. I've drenched all sick calves with Corid. One died. One is up and improving. Other is still down but eating and alert. Have been drenching daily with electrolytes. The others all improved fairly quick. These heifers have been weaned and had been on peanut & bahia hay. All were in good shape before. I have some steers in a different lot with no signs of problems. Also ,no signs with the cows or young calves. My question is to others that have had coccidiosis problems. Does anyone have a regular preventive plan that seemed to end their problems? I have only had spring problems in the past. Never in the fall or with older calves.