I'm looking to vaccinate my chicks that will be hatching soon because I will be showing and breeding them once they are grown and I don't want them being exposed to something that they are unpreared for. I was think Marek's, Fowl Pox, and New castle - infectious bronchitis. But the more I read the more confused I am. I read in a few places that if you vaccinate for Mareks, then you are giving them the disease so that they will not show symptoms, but will be carriers for life. If they are carriers, then can they infect my older non - vaccinated birds? And what about the other vaccines? I have never had a problem with any poultry disease from the 5 years I've owned chcikens, but if I'm showing them, I imagine there is a much higher risk for disease. Are there any diseases I should be particularily careful about when showing? Thanks.