Canine Adenovirus Type 2 Parainfluenza Bordetella bronchiseptica vaccine. Modified Live Virus, Avirulent Live Culture. Intranasal vaccine for healthy dogs as young as 3 weeks of age that protects against bordetella, adenovirus, and parainfluenza. Vaccinate at least 1 week prior to possible exposure. Can use 0.5ml to 1ml diluent to rehydrate vaccine depending on comfort level of the dog. Revaccinate annually. For veterinary use only.