Our flock became ill after getting some new birds in Dec. Necropsy was inconclusive and OSU said no need to cull. I am pretty sure they had ILT-Infectious Laryngotracheitis due to bloody mucus and symptoms. Our birds have recovered but will be carriers. I have read scientific studies, info from vaccine manufacturer's and everything I can find on the Internet. The information I have found is all over the place. Some say carriers for life, some say 2% are carriers and shed virus later and some articles say carrier status is 2 weeks or 2 years. Does anyone here have experience with this disease? It seems the consensus on BYC is to cull everyone and start over. We would like to keep the 12 we have left and get new chicks in the spring.Dr Brown said we can vaccinate the ones we have left and vaccinat the new chicks 4 and 10 weeks. PLEASE let me know if you have had this and not culled and/or added new birds. We show the birds for 4h and want to continue showing. Thanks!