I was told by a few vets, at a seminar, and by some dog nutritionists that they lyme vaccine is not proven effective and can be veryt bad for these little dogs. My own breeder said that they shouldn't have it. I've been putting a t-shirt on my dog for walks and brush in Neem powder before we go...check him over when we get back.
My vet also has me keep Ledum on hand and says that if given within...so many days of the bite...is as close to prevention and cure as you can get.
http://cassia.org/ledum.htm
suz