Feline viral rhinotracheitis vaccine and combination feline viral rhinotracheitis-calicivirus vaccine prepared therefrom

摘要

A modified live feline viral rhinotracheitis vaccine is prepared by treating with ultraviolet light a feline viral rhinotracheitis virus which has been subjected to chemical treatment with mutagens. A combination feline viral rhinotracheitis-calicivirus vaccine is prepared by combining a modified live feline viral rhinotracheitis virus and naturally-occurring calicivirus.