Ok, so I have a slightly technical question. I am new to chickens btw. Back in August I picked up some new chickens from a swap meet. I made the mistake of not quarantining them. (Remember the newbie part.) Well my chickens ended up getting Infectious Bronchitis. They were not officially diagnosed since that would have cost me $500 around here. After doing some reading it says I need to have a closed coop for a year. My question is, if I vaccinate new babies that I buy from a local hatchery will this protect them? And if I can vaccinate them what is the directions for doing this? Thank You!