My 4 week old chicks just finished their dosage of Corid. I believe they had Coccidiosis. Even though they were vaccinated for it from the hatchery. One of my chicks who wasn't even showing symptoms when I dosed them is now lethargic. She's barely moved in days, she is eating and drinking and I have her separated from the rest of the girls and she got 4 days while they only had 3 days of Corid. I'm not sure what else I can do for her. I was told after 2 weeks to redose them then give vitamins. But what can I do for her to get her back on her feet? Her last dose ended yesterday,