samshine
Posted : 4/8/2008 12:56:21 AM
Well, I feel particularly qualified to answer you today, since just yesterday I attended a seminar with Dr. Schultz, the premiere researcher in veterinary immunology and vaccinations. 
For distemper, parvo, and adenovirus, if she received just one shot after the age of 16 weeks, then she will be protected. For these three diseases you do not need a series when given to a dog over 16 weeks. Just one shot. The duration of immunity has been proven to be more than seven yeard, probably for the lifetime of the dog.
The reason puppies are given a series is because the maternal antibodies they get from mother's milk in the first three days interfer with the vaccinations. If they have mom's antibodies, these neutralize the vaccine right away and the puppy's immune system never has to mount a defense. The problem is that we are not really sure when the mother's antibodies drop low enough so that the vaccine can do its job. In some puppies it drops off early and they can respond to a shot given at 8 weeks. Some puppies have lots of antibodies from mom and they don't go away until maybe 14 weeks. We give shots every three weeks so that the window of risk where the puppy is unprotected is not too long for any one puppy.
So that was a long way to say that older dogs do not need a series for distemper, parvo, and adenovirus. Those along with rabies are what they call core vaccines. Every dog should have. Other vaccinations should be decided on case by case. For lyme, research and find out how prevalent it is in your area. Dr. Schultz does not recommend the lyme vaccine unless it is prevalent in your area. If you are just visiting an area and they have a lot of lyme, then I would just be careful to avoid tick bites. The lyme vaccine itself can rarely cause arthritis symptoms. But if your dog gets this vaccine caused arthritis there is no treatment. Lepto is another one that should only be given if you live in an area with lots of lepto, because this vaccine is one that has a high incidence of reactions.
The giardia vaccine and corona vaccine are not recommended. Dr. Schultz calls corona "a vaccine in search of a disease." Dogs just do not get sick from corona.
Lepto and lyme are bacterial diseases, so the dog does not develop long term immunity. The lepto vaccine is good for probably 6-9 months, Lyme longer, at least one year. With lepto, the initial vaccination does need to be two shots about three weeks apart.
IMHO, it was irresponsible of your vet to let you believe that you needed to get a series.
Oh, almost forgot to answer your question about traveling. If you are driving to the states, all you need is a rabies certificate. If you are going to fly, she needs to see the vet for a checkup and get a health certificate.