DAPP (a.k.a. DHPP) vaccine. This combination vaccine protects dogs against Distemper, Adenovirus type 1 (Hepatitis), Adenovirus type 2 (respiratory), Parainfluenza and Parvovirus. After the initial series, your dog will still need periodic boosters, with the frequency being determined by your veterinarian and based on your dog’s age, lifestyle, and other risk factors. If your dog is due for a booster, it should ideally be done at least 3 weeks before their stay at a kennel to allow them to build up the best immunity prior to boarding. This vaccine is required for daycare, boarding, or any activities on the premises.