This is not true. Rabies vaccinations have NOT been proven to provide protection for more than a year in horses. Even in dogs and cats the length of time that vaccinations provide protection for varies because they are not just different looking animals on the outside. Each species must be studied seperately because they ARE DIFFERENT and do not all respond to the same things in the same way. Hence the difference in the diseases and parasites which infect different species and the difference in what types of drugs can be used in each species safely.
Rabies vaccination in horses is still recommended yearly. There are no studies that show that rabies vaccination lasts for 3 or even 2 years in horses.
Also There have been studies in horses, that the vaccine antibodies is prevalent in horse for beyond a year.
Now I'm from Canada....so perhaps this isn't the case in the states, but here in my Province...Vets are now only recommending rabies vaccinations for dogs every 2 years, horses every 2 years, and cats every 3.
And I never said that horse cats, and dogs had the same types of systems
Always behind....yes your correct that a vet must give the rabies vaccine....this is because they must document the time, place etc it was given. So that they (gov) can do any follow up on rabies cases.
Here you (the average joe blow) cannot buy rabies vaccine as you can regular vaccines, your vet must administer it