This vaccine is actually an acronym for 5 different vaccines in one. The diseases the vaccine is guarding against are Distemper, Hepatitis, Leptospirosis, Parvo, & Para influenza. Recently due to some breeds (often small dog breeds) having an allergic reaction to the Leptospirosis vaccine, veterinarians are now administering the vaccine separate from the other four. You will now see the vaccine referred to as DAP2 or DAP3 with Leptospirosis administered separately. If your dog is allergic to Leptospirosis and cannot receive the vaccination, please inform PupTown.