NeoVac DA2 Canine Vaccine Modified live virus. NeoVac DA2 is a modified live virus vaccine providing essential protection against canine Distemper and Adenovirus Type 2. It is recommended for healthy dogs 42 days of age or older to help ensure long-term health and immunity. This vaccine comes complete with the necessary diluent for proper reconstitution prior to administration. Features: Modified live virus vaccine Protects against canine Distemper and Adenovirus Type 2 Recommended for dogs 42 days of age and older Supports long-term health and immunity Comes with diluent for proper reconstitution. Dosage and Administration: Inject 1 dose (1 ml) subcutaneously into dogs. For puppies, due to potential interference from maternal antibodies, revaccinate every 14 to 28 days until the dog reaches 16 weeks of age. Dogs over 16 weeks of age should receive a single 1 ml dose. Annual revaccination with one dose is recommended to maintain immunity. A Valid veterinarian prescription is required to purchase this item in the state of Minnesota. Please contact your veterinarian for a prescription. All vaccines are NON-RETURNABLE and NON-REFUNDABLE.