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Persistence of the tissue culture origin vaccine for infectious laryngotracheitis virus in commercial chicken flocks in Brazil
2015
Poultry Science
Infectious laryngotracheitis (ILT) is a respiratory disease of great importance that causes serious economic losses in the poultry industry. Its control is based on biosecurity procedures and vaccination programs that use live attenuated vaccines such as tissue culture origin (TCO), chicken embryo origin (CEO), and vectored vaccines. However, problems have been reported, such as the reversion of virulence, virus latency, and field virus outbreaks. Several molecular techniques have been
doi:10.3382/ps/pev213
pmid:26500264
fatcat:fvx3x7eonrahnhyebbtmjwgfge