(Merck) Bordetella + Adenovirus + Parainfluenza Modified live + avirulent live Bordetella bronchiseptica. For protection against canine adenovirus type 2, parainfluenza and bordetella bronchiseptica. For dogs 3 weeks of age or older. Give intranasally. Instill 0.5 ml into one nostril, or split dose between both nostrils. Annual revaccination is recommended. Advanced delivery technology nasal applicators contain diluent. Requires mixing. Applicators and tips are included.