Anybody here vaccinate for Newcastle/IB? My chicks are now 3 and 4 weeks old, still isolated and I bought the vaccine for it, but it is live. The B-1 type. Is there any danger to the chicks with this? Are they carriers after vaccination? Or only temporary carriers? Should I vaccinate my older birds with this live vaccine? They have only had the dead version and that was last year. At the time, I didn\'t realize they needed to be prepped with a live vaccine and the vaccine was a combo MG, Newcastle, IB and pretty expensive. If I don\'t vaccinate the older birds, they wouldn\'t be at risk from the younger ones once they are mingled would they? And do you really have to revaccinate for this every few months?
Thanks