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REPLICATION AND TRANSMISSION OF LIVE ATTENUATED INFECTIOUS LARYNGOTRACHEITIS VIRUS (ILTV) VACCINES

Infectious laryngotracheitis (ILT), a highly contagious avian pathogen, is a viral upper respiratory disease of chickens responsible for serious production losses in the poultry industry due to moderate mortality and decreased egg production. The overall objective of this study was to compare alongside the replication and transmission of the tissue culture origin (TCO) and chicken embryo origin (CEO) vaccines at different time points post-inoculation in both eye dropinoculated and contact-exposed chickens using virus isolation and quantitative ReTi-PCR.