Nobivac Canine Intra-Trac3 ADT by Merck is an intranasal vaccine for dogs containing canine adenovirus type 2 and canine parainfluenza (modified live virus) plus Bordetella bronchiseptica (avirulent live culture). The convenient powder-for-solution kit delivers a 0.5 mL dose and comes in a 25-dose pack for clinic efficiency. Intranasal administration offers a needle-free option preferred in many vaccination programs. Ideal for veterinary teams seeking a streamlined dog vaccine covering key respiratory pathogens.