I have some 3 day old baby chicks. I asked the feed store if they where vaccinated and he said that the only thing to really vaccinate for was pox. not sure if the starter feed he sold me from a large bag is medicated or not. I was thinking of vaccinating them for avian pox and mareks anyway. These are my first chickens ever. so i am a complete newb. any advice would be great. also where should i get the vaccine at? i just have 4 chicks atm.