I ordered 25 chicks from Murray. I ordered the full vaccine profile (Marek's and Coccidia) because I thought, why not? I received 25 live and healthy, but chilled, chicks. 2 days later, one previously healthy one started to fade. He had "pasty butt" and I thought, "Oh, no, coccidia!" I ran to the store to get some Corid. Then I came home and realized they had been vaccinated against coccidia??? I thought, "Must be an anomaly. I'll just wait." The next day, another was fading and watery stools everywhere. I started administering the Corid. Then I read up on it, and found that a Coccidia "vaccine" is an administration of the LIVE UNATTENUATED parasite! Well, my chicks are up hopping today, with continued administration of the coccidiostat, so this is not a Murray hatchery problem, except that they should not offer this "service." Please do not vaccinate your chicks against Coccidia from any hatchery.