I was thinking of vaccinating my very small flock of 5 with a Newcastle-Bronchitis vaccine. Unfortunately there aren't any poultry vets around here (that I know of). (I live in Houston so if anybody knows where there IS one please tell me!) Anyway, the vial comes with 1000 doses!!! I really want my chickens to be well protected, because unfortunately one of my little baby roos passed away a few days ago ... The poor thing couldn't breath... All of my chickens are less than a year old and I want them to be able to live long, full lives. I've emailed the "Chicken Doctor" and he said that because it's such a small flock, it may actually do more harm than good, and that I should only do it if it's absolutely necessary. I just wanted to see what you guys think and if anyone has vaccined such a small flock before.