Those that do their own Distemper/Parvo Shots. After the 3rd shot is given, do you give the one year booster shot every year or alternating so on and so on.

My Brittany Spaniel Male I just gave him his 3rd Distemper/Parvo last week. And come summer I will get his Rabies done and Neuter him.

Im just not sure if the Booster is recommend each year or not. Also How recommended is the kennel Cough Vaccine(Bordetella) really needed.