Boosters don't booster anything. You are either immune or you aren't. From what I understand about titers, however, the memory cells have to be activated to show proper immunity. So before you have the titers drawn, walk the dog around a Petsmart or a park where other dogs have walked around for a few days before the test. This gets their immune system up and running so the titer will be accurate. If the dog has just been in your backyard and not exposed to other dogs at all, there's a chance the titer may come back unacceptably low - even though the dog DOES have immunity, if that makes sense. This is apparently one downfall of the titers. A dog could be successfully immune against parvo/distemper/rabies but it might not show on the titer test if the memory cells are dormant and haven't been activated. So hedge your bets and get her out and about before having the test done for the most accurate results.
More articles that I like:
http://www.spanieljournal.com/28lbaughan.html http://www.dogsnaturallymagazine.com...immunity-vets/ http://www.cedarbayvet.com/duration_of_immunity.htm http://www.whale.to/vaccine/driscoll1.html http://www.dogsadversereactions.com/...ineDamage.html
The thing with minimal vaccines is that it isn't some new aged idea that gets spout around forums... there's actual research and scientific evidence that has been being researched for many many years.