Canine Parainfluenza Bordetella Bronchiseptica Vaccine. Modified Live Virus Avirulent Live Culture.  A 0.4mL intranasal kennel cough vaccine that can be used safely in 3 week old puppies at least 72 hours prior to confinement or when risk of kennel cough may exist. Protects against Bronchiseptica within 72 hours, stimulates systemic immunity within 3 weeks. One nostril administration, no applicator needed. Revaccinate annually. Safe for pregnant bitches.