The ASPCA guidelines on vaccination are pretty non-specific and allow a lot of flexibility for you and your vet.
Core Vaccines:
For Dogs: Vaccines for canine parvovirus, distemper, canine hepatitis and rabies are considered core vaccines. Non-core vaccines are given depending on the dog’s exposure risk. These include vaccines against Bordetella bronchiseptica, Borrelia burgdorferi and Leptospira bacteria.
Timing or frequency:
For adult dogs: Some adult dogs might receive certain vaccines annually, while other vaccines might be given every three years or longer.
If you and your vet determine that a particular vaccine is not appropriate for your animal, a simple letter stating that should fit into this protocol (the "or longer" being the meaningful phrase).
