I vaccinate for the things that the odds are good they'll kill my horses if they get it-West Nile, WEE & EEE, rabies and tetanus. I space each one out at least two weeks apart and I don't deworm at the same time. I also do regular fecals and deworm according to what I see.
I recently had a conversation with a Vet who said there are a number of Vets who would like someone to do more research about how long vaccines last in horses because they suspect that many only need to be given several years apart and some maybe only once a lifetime. The vaccine people aren't really interested in this research (they make a lot of money with vaccines) and, he admitted, neither are a number of vets because the yearly vaccines are often the only time vets get to see a client's horse! You can have bloodtests (titers) done on your horses for many of the vaccines to see if they still have immunity but since the titers cost more than the vaccines, most people won't bother. Cherie
